BC and DR Archives

June 4, 2013March 7, 2022

IBM buys Softlayer, for software defined infrastructures and clouds?

Storage I/O trends

IBM today announced that they are acquiring privately held Dallas Texas-based Softlayer and Infrastructure as a Service (IaaS) provider.

IBM is referring to this as Cloud without Compromise (read more about clouds, conversations and confidence here).

It’s about the management, flexibly, scale up, out and down, agility and valueware.

Is this IBM’s new software defined data center (SDDC) or software defined infrastructure (SDI) or software defined management (SDM), software defined cloud (SDC) or software defined storage (SDS) play?

This is more than a software defined marketing or software defined buzzword announcement.
buzzword bingo

If your view of software define ties into the theme of leveraging, unleashing resources, enablement, flexibility, agility of hardware, software or services, then you may see Softlayer as part of a software defined infrastructure.

On the other hand, if your views or opinions of what is or is not software defined align with a specific vendor, product, protocol, model or punditry then you may not agree, particular if it is in opposition to anything IBM.

Cloud building blocks

During today’s announcement briefing call with analysts there was a noticeable absence of software defined buzz talk which given its hype and usage lately, was a refreshing welcome relief. So with that, lets set the software defined conversation aside (for now).

Cloud image

Who is Softlayer, why is IBM interested in them?

Softlayer provide software and services to support both SMB, SME and other environments with bare metal (think traditional hosted servers), along with multi-tenant (shared) cloud virtual public and private cloud service offerings.

Softlayer supports various applications, environments from little data processing to big data analytics to little data processing, from social to mobile to legacy. This includes those app’s or environments that were born in the cloud, or legacy environments looking to leverage cloud in a complimentary way.

Some more information about Softlayer includes:

Privately held IaaS firm founded in 2005
Estimated revenue run rate of around $400 million with 21,000 customers
Mix of SMB, SME and Web-based or born in the cloud customers
Over 100,000 devices under management
Provides a common modularized management framework set of tools
Mix of customers from Web startups to global enterprise
Presence in 13 data centers across the US, Asia and Europe
Automation, interoperability, large number of API access and supported
Flexibility, control and agility for physical (bare metal) and cloud or virtual
Public, private and data center to data center
Designed for scale, durability and resiliency without complexity
Part of OpenStack ecosystem both leveraging and supporting it
Ability for customers to use OpenStack, Cloudstack, Citrix, VMware, Microsoft and others
Can be white or private labeled for use as a service by VARs

Storage I/O trends

What IBM is planning for Softlayer

Softlayer will report into IBM Global Technology Services (GTS) complimenting existing capabilities which includes ten cloud computing centers on five continents. IBM has created a new Cloud Services Division and expects cloud revenues could be $7 billion annually by the end of 2015. Amazon Web Services (AWS) is estimated to hit about $3.8 Billion by end of 2013. Note that in 2012 AWS target available market was estimated to be about $11 Billion which should become larger moving forward. Rackspace by comparison had recent earning announcements on May 8 2013 of $362 Million with most that being hosting vs. cloud services. That works out to an annualized estimated run rate of $1.448 Billion (or better depending on growth).

I mention AWS and Rackspace to illustrate the growth potential for IBM and Softlayer to discuss the needs of both cloud services customers such as those who use AWS (among other providers), as well as bare metal or hosting or dedicated servers such as with Rackspace among others.

Storage I/O trends

What is not clear at this time is if IBM is combing traditional hosting, managed services, new offerings, products and services in that $7 billion number. In other words if the $7 billion represents what the revenues of the new Cloud Services Division independent of other GTS or legacy offerings as well as excluding hardware, software products from STG (Systems Technology Group) among others, that would be impressive and a challenge to the likes of AWS.

IBM has indicated that it will leverage its existing Systems Technology Group (STG) portfolio of servers and storage extending the capabilities of Softlayer. While currently x86 based, one could expect IBM to leverage and add support for their Power systems line of processors and servers, Puresystems, as well as storage such as XIV or V7000 among others for tier 1 needs.

Some more notes:

Ties into IBM Smart Cloud initiatives, model and paradigm
This deal is expected to close 3Q 2013, terms or price were not disclosed.
Will enable Softlayer to be leveraged on a larger, broader basis by IBM
Gives IBM increased access to SMB, SME and web customers than in the past
Software and development to stay part of Softlayer
Provides IBM an extra jumpstart play for supporting and leveraging OpenStack
Compatible and supports Cloustack and Citrix who are also IBM partners
Also compatible and supports VMware who is also an IBM partner

Storage I/O trends

Some other thoughts and perspectives

This is a good and big move for IBM to add value and leverage their current portfolios of both services, as well as products and technologies. However it is more than just adding value or finding new routes to markets for those goods and services, it’s also about enablement IBM has long been in the services including managed services, out or in sourcing and hosting business. This can be seen as another incremental evolution of those offerings to both existing IBM enterprise customers, as well to reach new, emerging along with SMB or SME’s that tend to grow up and become larger consumers of information and data infrastructure services.

Further this helps to add some product and meaning around the IBM Smart Cloud initiatives and programs (not that there was not before) giving customers, partners and resellers something tangible to see, feel, look at, touch and gain experience not to mention confidence with clouds.

On the other hand, is IBM signaling that they want more of the growing business that AWS has been realizing, not to mention Microsoft Azure, Rackspace, Centurylink/Savvis, Verizon/Terremark, CSC, HP Cloud, Cloudsigma, Bluehost among many others (if I missed you or your favorite provider, feel free to add it to the comments section). This also gets IBM added Devops exposure something that Softlayer practices, as well as a Openstack play, not to mention cloud, software defined, virtual, big data, little data, analytics and many other buzzword bingo terms.

Congratulations to both IBM and the Softlayer folks, now lets see some execution to watch how this unfolds.

Ok, nuff said.

Cheers gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

May 29, 2013November 26, 2023

Web chat Thur May 30th: Hot Storage Trends for 2013 (and beyond)

Storage I/O trends

Join me on Thursday May 30, 2013 at Noon ET (9AM PT) for a live web chat at the 21st Century IT (21cit) site (click here to register, sign-up, or view earlier posts). This will be an online web chat format interactive conversation so if you are not able to attend, you can visit at your convenience to view and give your questions along with comments. I have done several of these web chats with 21cit as well as other venues that are a lot of fun and engaging (time flies by fast).

For those not familiar, 21cIT is part of the Desum/UBM family of sites including Internet Evolution, SMB Authority, and Enterprise Efficiency among others that I do article posts, videos and live chats for.

May 2013 Server and StorageIO Update Newsletter

May 2013 News letter

Welcome to the May 2013 edition of the StorageIO Update. This edition has announcement analysis of EMC ViPR, Software Defined Storage (including a video here), server, storage and I/O metrics that matter for example how many IOPS can a HDD do (it depends). SSD including nand flash remains a popular topic, both in terms of industry adoption and customer deployment. Also included are my perspectives on the SSD vendor FusionIO CEO leaving in a flash. Speaking of nand flash, have you thought about how some RAID implementations and configurations can extend the life along with durability of SSD’s? More on this soon, however check out this video to give you some perspectives.

Click on the following links to view the May 2013 edition as (HTML sent via Email) version, or PDF versions.

Visit the news letter page to view previous editions of the StorageIO Update.

You can subscribe to the news letter by clicking here.

Enjoy this edition of the StorageIO Update news letter, let me know your comments and feedback.

Ok Nuff said, for now

Cheers
Gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

May 7, 2013March 7, 2022

EMC ViPR software defined object storage part III

Storage I/O trends

This is part III in a series of posts pertaining to EMC ViPR software defined storage and object storage. You can read part I here and part II here.

EMCworld

More on the object opportunity

Other object access includes OpenStack storage part Swift, AWS S3 HTTP and REST API access. This also includes ViPR supporting EMC Atmos, VNX and Isilon arrays as southbound persistent storage in addition.

object storage
Object (and cloud) storage access example

EMC is claiming that over 250 VNX systems can be abstracted to support scaling with stability (performance, availability, capacity, economics) using ViPR. Third party storage will be supported along with software such as OpenStack Swift, Ceph and others running on commodity hardware. Note that EMC has some history with object storage and access including Centera and Atmos. Visit the micro site I have setup called www.objectstoragecenter.com and watch for more content to be updated and added there.

More on the ViPR control plane and controller

ViPR differs from some others in that it does not sit in the data path all the time (e.g. between application servers and storage systems or cloud services) to cut potential for bottlenecks.

ViPR architecture

Organizations that can use ViPR include enterprise, SMB, CSP or MSP and hosting sites. ViPR can be used in a control mode to leverage underlying storage systems, appliances and services intelligence and functionality. This means ViPR can be used to complement as oppose to treat southbound or target storage systems and services as dumb disks or JBOD.

On the other hand, ViPR will also have a suite of data services such as snapshot, replication, data migration, movement, tiering to add value for when those do not exist. Customers will be free to choose how they want to use and deploy ViPR. For example leveraging underlying storage functionality (e.g. lightweight model), or in a more familiar storage virtualization model heavy lifting model. In the heavy lifting model more work is done by the virtualization or abstraction software to create an added value, however can be a concern for bottlenecks depending how deployed.

Software defined, storage hypervisor, virtual storage or storage virtualization?

Most storage virtualization, storage hypervisors and virtual storage solutions that are hardware or software based (e.g. software defined) implemented what is referred to as in band. With in band the storage virtualization software or hardware sits between the applications (northbound) and storage systems or services (southbound).

While this approach can be easier to carry out along with add value add services, it can also introduce scaling bottlenecks depending on implementations. Examples of in band storage virtualization includes Actifio, DataCore, EMC VMAX with third-party storage, HDS with third-party storage, IBM SVC (and their V7000 Storwize storage system based on it) and NetApp Vseries among others. An advantage of in band approaches is that there should not need to be any host or server-side software requirements and SAN transparency.

There is another approach called out-of-band that has been tried. However pure out-of-band requires a management system along with agents, drivers, shims, plugins or other software resident on host application servers.

Example of generic fast path control path model

ViPR takes a different approach, one that was seen a few years ago with EMC Invista called fast path, control path that for the most part stays out of the data path. While this is like out-of-band, there should not be a need for any host server-side (e.g. northbound) software. By being a fast path control path, the virtualization or abstraction and management functions stay out of the way for data being moved or work being done.

Hmm, kind of like how management should be, there to help when needed, out-of-the-way not causing overhead other times ;).

Is EMC the first (even with Invista) to leverage fast path control path?

Actually up until about a year or so ago, or shortly after HP acquired 3PAR they had a solution called Storage Virtualization Services Platform (SVPS) that was OEMd from LSI (e.g. StorAge). Unfortunately, HP decided to retire that as opposed to extend its capabilities for file and object access (northbound) as well as different southbound targets or destination services.

Whats this northbound and southbound stuff?

Simply put, think in terms of a vertical stack with host servers (PMs or VMs) on the top with applications (and hypervisors or other tools such as databases) on top of them (e.g. north).

software defined storage
Northbound servers, southbound storage systems and cloud services

Think of storage systems, appliances, cloud services or other target destinations on the bottom (or south). ViPR sits in between providing storage services and management to the northbound servers leveraging the southbound storage.

What host servers can VIPR support for serving storage?

VIPR is being designed to be server agnostic (e.g. virtual or physical), along with operating system agnostic. In addition VIPR is being positioned as capable of serving northbound (e.g. up to application servers) block, file or object as well as accessing southbound (e.g. targets) block, file and object storage systems, file systems or services.

Note that a difference between earlier similar solutions from EMC have been either block based (e.g. Invista, VPLEX, VMAX with third-party storage), or file based. Also note that this means VIPR is not just for VMware or virtual server environments and that it can exist in legacy, virtual or cloud environments.

ViPR image

Likewise VIPR is intended to be application agnostic supporting little data, big data, very big data ( VBD) along with Hadoop or other specialized processing. Note that while VIPR will support HDFS in addition to NFS and CIFS file based access, Hadoop will not be running on or in the VIPR controllers as that would live or run elsewhere.

How will VIPR be deployed and licensed?

EMC has indicated that the VIPR controller will be delivered as software that installs into a virtual appliance (e.g. VMware) running as a virtual machine (VM) guest. It is not clear when support will exist for other hypervisors (e.g. Microsoft Hyper-V, Citrix/XEN, KVM or if VMware vSphere with vCenter or simply on ESXi free version). As of the announcement pre briefing, EMC had not yet finalized pricing and licensing details. General availability is expected in the second half of calendar 2013.

Keep in mind that the VIPR controller (software) runs as a VM that can be hosted on a clustered hypervisor for HA. In addition, multiple VIPR controllers can exist in a cluster to further enhance HA.

Some questions to be addressed among others include:

How and where are IOs intercepted?
Who can have access to the APIs, what is the process, is there a developers program, SDK along with resources?
What network topologies are supported local and remote?
What happens when JBOD is used and no advanced data services exist?
What are the characteristics of the object access functionality?
What if any specific switches or data path devices and tools are needed?
How does a host server know to talk with its target and ViPR controller know when to intercept for handling?
Will SNIA CDMI be added and when as part of the object access and data services capabilities?
Are programmatic bindings available for the object access along with support for other APIs including IOS?
What are the performance characteristics including latency under load as well as during a failure or fault scenario?
How will EMC place Vplex and its caching model on a local and wide area basis vs. ViPR or will we see those two create some work together, if so, what will that be?

Bottom line (for now):

Good move for EMC, now let us see how they execute including driving adoption of their open APIs, something they have had success in the past with Centera and other solutions. Likewise, let us see what other storage vendors become supported or add support along with how pricing and licensing are rolled out. EMC will also have to articulate when and where to use ViPR vs. VPLEX along with other storage systems or management tools.

Ok, nuff said (for now)

Cheers gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

May 7, 2013March 7, 2022

EMC ViPR software defined object storage part II

Storage I/O trends

This is part II in a series of posts pertaining to EMC ViPR software defined storage and object storage. You can read part I here and part III here.

EMCworld

Some questions and discussion topics pertaining to ViPR:

Whom is ViPR for?

Organizations that need to scale with stability across EMC, third-party or open storage software stacks and commodity hardware. This applies to large and small enterprise, cloud service providers, managed service providers, virtual and cloud environments/

What this means for EMC hardware/platform/systems?

They can continue to be used as is, or work with ViPR or other deployment modes.

Does this mean EMC storage systems are nearing their end of life?

IMHO for the most part not yet, granted there will be some scenarios where new products will be used vs. others, or existing ones used in new ways for different things.

As has been the case for years if not decades, some products will survive, continue to evolve and find new roles, kind of like different data storage mediums (e.g. ssd, disk, tape, etc).

How does ViPR work?

ViPR functions as a control plane across the data and storage infrastructure supporting both north and southbound. northbound refers to use from or up to application servers (physical machines PM and virtual machines VMs). southbound refers target or destination storage systems. Storage systems can be traditional EMC or third-party (NetApp mentioned as part of first release), appliances, just a bunch of disks (JBOD) or cloud services.

Some general features and functions:

Provisioning and allocation (with automation)
Data and storage migration or tiering
Leverage scripts, templates and workbooks
Support service categories and catalogs
Discovery, registration of storage systems
Create of storage resource pools for host systems
Metering, measuring, reporting, charge or show back
Alerts, alarms and notification
Self-service portal for access and provisioning

ViPR data plane (adding data services and value when needed)

Another part is the data plane for implementing data services and access. For block and file when not needed, ViPR steps out-of-the-way leveraging the underlying storage systems or services.

Object storage access

When needed, the ViPR data plane can step in to add added services and functionality along with support object based access for little data and big data. For example, Hadoop Distributed File System (HDFS) services can support northbound analytic software applications running on servers accessing storage managed by ViPR.

Continue reading in part III of this series here including how ViPR works, who it is for and more analysis.

Ok, nuff said (for now)

Cheers gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

May 6, 2013January 1, 2022

EMC ViPR virtual physical object and software defined storage (SDS)

Storage I/O trends

Introducing EMC ViPR

This is the first in a three part series, read part II here, and part III here.

During the recent EMCworld event in Las Vegas among other things, EMC announced ViPR (read announcement here) . Note that this ViPR is not the same EMC Viper project from a few years ago that was focused on data footprint reduction (DFR) including dedupe. ViPR has been in the works for a couple of years taking a step back rethinking how storage is can be used going forward.

EMCworld

ViPR is not a technology creation developed in a vacuum instead includes customer feedback, wants and needs. Its core themes are extensible, open and scalable.

EMCworld

On the other hand, ViPR addresses plenty of buzzword bingo themes including:

Agility, flexibility, multi-tenancy, orchestration
Virtual appliance and control plane
Data services and storage management
IT as a Service (ITaaS) and Infrastructure as a Service (IaaS)
Scaling with stability without compromise
Software defined storage
Public, private, hybrid cloud
Big data and little data
Block, file and object storage
Control plane and data plane
Storage hypervisor, virtualization and virtual storage
Heterogeneous (third-party) storage support
Open API and automation
Self-service portals, service catalogs

Buzzword bingo

Note that this is essentially announcing the ViPR product and program initiative with general availability slated for second half of 2013.

What is ViPR addressing?

IT and data infrastructure (server, storage, IO and networking hardware, software) challenges for traditional, virtual and cloud environments.

Data growth, after all, there is no such thing as an information recession with more data being generated, moved, processed, stored and retained for longer periods of time. Then again, people and data are both getting larger and living longer, for both little data and big data along with very big data.

Overhead and complexities associated with managing and using an expanding, homogenous (same vendor, perhaps different products) or heterogeneous (different vendors and products) data infrastructure across cloud, virtual and physical, legacy and emerging. This includes add, changes or moves, updates and upgrades, retirement and replacement along with disposition, not to mention protecting data in an expanding footprint.

road to cloud

Operations and service management, fault and alarm notification, resolution and remediation, rapid provisioning, removing complexity and cost of doing things vs. simply cutting cost and compromising service.

EMC ViPR

What is this software defined storage stuff?

There is the buzzword aspect, and then there is the solution and business opportunity.

First the buzzword aspect and bandwagon:

Software defined marketing (SDM) Leveraging software defined buzzwords.

Software defined data centers (SDDC) Leveraging software to derive more value from hardware while enabling agility, flexibility, and scalability and removing complexity. Think the Cloud and Virtual Data Center models including those from VMware among others.

Software defined networking (SDN) Rather than explain, simply look at Nicira that VMware bought in 2012.

Software defined storage (SDS) Storage software that is independent of any specific hardware, which might be a bit broad, however it is also narrower than saying anything involving software.

Software defined BS (SDBS) Something that usually happens as a result when marketers and others jump on a bandwagon, in this case software defined marketing.

Note that not everything involved with software defined is BS, only some of the marketing spins and overuse. The downside to the software defined marketing and SDBS is the usual reaction of skepticism, cynicism and dismissal, so let us leave the software defined discussion here for now.

software defined storage

An example of software defined storage can be storage virtualization, virtual storage and storage hypervisors that are hardware independent. Note that when I say hardware independent, that also means being able to support different vendors systems. Now if you want to have some fun with the software defined storage diehards or purist, tell them that all hardware needs software and all software needs hardware, even if virtual. Further hardware is defined by its software, however lets leave sleeping dogs lay where they rest (at least for now ;)).

Storage hypervisors were a 2012 popular buzzword bingo topic with plenty of industry adoption and some customer deployment. While 2012 saw plenty of SDM buzz including SDC, SDN 2013 is already seeing an increase including software defined servers, and software defined storage.

Regardless of what you view of software defined storage, storage hypervisor, storage virtualization and virtual storage is, the primary focus and goal should be addressing business and application needs. Unfortunately, some of the discussions or debates about what is or is not software defined and related themes lose focus of what should be the core goal of enabling business and applications.

Continue reading in part II of this series here including how ViPR works, who it is for and more analysis.

Ok, nuff said (for now)

Cheers gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

April 29, 2013March 7, 2022

April 2013 Server and StorageIO Update Newsletter

April 2013 News letter

Welcome to the April 2013 edition of the StorageIO Update. This edition includes more on nand flash SSD, after all its not if, rather when, where, why, with what along with how much SSD is in your future. Also more on object storage, clouds, big data and little data, HDDs, SNW, backup/restore, HA, BC, DR and data protection along with data center topics and trends.

You can get access to this news letter via various social media venues (some are shown below) in addition to StorageIO web sites and subscriptions.

Click on the following links to view the April 2013 edition as (HTML sent via Email) version, or PDF versions.

Visit the news letter page to view previous editions of the StorageIO Update.

You can subscribe to the news letter by clicking here.

Enjoy this edition of the StorageIO Update news letter, let me know your comments and feedback.

Ok Nuff said, for now

Cheers
Gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

April 23, 2013June 7, 2022

Spring SNW 2013, Storage Networking World Recap

Storage I/O trends

A couple of weeks ago I attended the spring 2013 Storage Networking World (SNW) in Orlando Florida. Talking with SNIA Chairman Wayne Adams and SNIA Director Leo Legar this was the 28th edition of the US SNW (two shows a year), plus the international ones. While I have not been to all 28 of the US SNWs, I have been to a couple of dozen SNWs in the US, Europe and Brazil going back to around 2001 as an attendee, main stage as well as breakout, and tutorial presenter (see here and here).

SNW image

For the spring 2013 SNW I was there for a mix of meetings, analyst briefings, attending the expo, doing some podcasts (see below), meeting with IT professionals (e.g. customers), VARs, vendors along with presenting three sessions (you can download them and others backup, restore, BC, DR and archiving).

Some of the buzz and themes heard included big data was a little topic at the event, while cloud was in the conversations, dedupe and data footprint reduction (DFR) do matter for some people and applications. However also a common theme with customers including Media and Entertainment (M&E) is that not everything can be duped thus other DFR approaches are needed.

There was some hype in and around hybrid storage along with storage hypervisors, which was also an entertaining panel discussion with HDS (Claus Mikkelsen aka @YoClaus), Datacore, IBM and Virstro.

The theme of that discussion seemed for the most part to gravitate towards realities of storage virtualization and less about the hypervisor hype. Some software defined marketing hype I heard is that it is impossible to spend more than a million dollars on a server today. I guess with the applicable caveats, qualifiers and context that could be true, however I also know some vendors and customers that would say otherwise.

Lunch
Lunchtime at SNW Spring 2013

Not surprisingly, there was an increase in vendors wanting to jump on the software defined and object storage bandwagons; however, customers tended to be curious at best, confused or concerned otherwise. Speaking of object storage, check out this podcast discussion with Cleversafe customer Justin Stottlemyer of Shutterfly and his 80PB environment.

In addition to Cleversafe, heard from Astute (if you need fast iSCSI storage check them out), Avere has a new NAS for dummies book out, Exablox a storage system startup with emphasis on scalability, ease of use and NAS access and hybrid storage Tegile. Also, check out SwifTest for generating application workloads and measurement that had their customer Go Daddy presenting at the event. A couple of others to keep an eye on include Raxco with their thin provision storage reclamation tool, and Infinio with their NAS acceleration for VMware software tools among others.

backup, restore, BC, DR and archiving

Here are the three presentations that I did while at the event:

Analyst Perspective: Increase Your Return on Innovation (The New ROI) With Data Management and Dedupe
There is no such thing as an information recession with more data to move, process and store, however there are economic challenges. Likewise, people and data are living longer and getting larger which requires leveraging data footprint reduction (DFR) techniques on a broader focus. It is time to move upstream finding and fixing things at the source to reduce the downstream impact of expanding data footprints, enabling more to be done with what you have.

Analyst Perspective: Metrics that Matter – Meritage of Data Management and Data Protection
Not everything in the data center or information factory is the same. This session recaps and builds off the morning increase your ROI with data footprint and data management session while setting the stage for the rethinking data protection (backup, BC and DR). Are you maximizing the return on innovation in how using new tools and technology in new ways, vs. using new tools in old ways? Also discussed performance capacity planning, forecasting analysis in cloud, virtual and physical environments. Without metrics that matter, you are flying blind, or perhaps missing opportunities to further drive your return on innovation and return on investment.

Analyst Perspective: Time to Rethink Data Protection Including BC and DR
When it comes to today’s data centers and information factories including physical, virtual and cloud, everything is not the same, so why treat business continuance (BC), disaster recovery (DR) and data protection in general the same? Simply using new tools, technologies and techniques in the same old ways is no longer a viable option. Since there is no such thing as a data or information recession, yet there are economic and budget challenges, along with new or changing threat risks, now is the time to review data protection including BC and DR including using new technologies in new ways.

You can view the complete SNW USA spring 2013 agenda here.

Podcasts are also available on

Here are links to some podcasts from spring 2013 SNW:
Stottlemyer of Shutterfly and object storage discussion
Dave Demming talking tech education from SNW Spring 2013
Farley Flies into SNW Spring 2013
Talking with Tony DiCenzo at SNW Spring 2013
SNIA Spring 2013 update with Wayne Adams
SNIA’s new SPDEcon conference

Also, check out these podcasts from fall 2012 US and Europe SNWs:
Ben Woo on Big Data Buzzword Bingo and Business Benefits
Networking with Bruce Ravid and Bruce Rave
Industry trends and perspectives: Ray Lucchesi on Storage and SNW
Learning with Leo Leger of SNIA
Meeting up with Marty Foltyn of SNIA
Catching up with Quantum CTE David Chapa (Now with Evault)
Chatting with Karl Chen at SNW 2012
SNW 2012 Wayne’s World
SNW Podcast on Cloud Computing
HDS Claus Mikkelsen talking storage from SNW Fall 2012

Storage I/O trends

What this all means?

While busy, I liked this edition of SNW USA in that it had a great agenda with diversity and balance of speaker sessions (some tutorials, some vendors, some IT customers, and some analysts) vs. too many of one specific area.

In addition to the agenda and session length, the venue was good, big enough, however not spread out so much to cause loss of the buzz and energy of the event.

This SNW had some similar buzz or energy as early versions granted without the hype and fanfare of a startup industry or focus area (that would be some of the other events today)

Should SNW go to a once a year event?

While it would be nice to have a twice a year venue for convenience, practicality and budgets say once would be enough given all the other conferences and venues on the agenda (or that could be).

The next SNW USA will be October 15 to 17 2013 in Long Beach California, and Europe in Frankfurt Germany October 29-30 2013.

Thanks again to all the attendees, participants, vendor exhibitors, event organizers and SNIA, SNW/Computerworld staffs for another great event.

Ok, nuff said

Cheers
Gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

April 17, 2013March 7, 2022

HDS Claus Mikkelsen talking storage from SNW Fall 2012

Now also available via

This is a new episode in the continuing StorageIO industry trends and perspectives pod cast series (you can view more episodes or shows along with other audio and video content here) as well as listening via iTunes or via your preferred means using this RSS feed (https://storageio.com/StorageIO_Podcast.xml)

Storage I/O cloud virtual and big data perspectives

In this episode from SNW Fall 2012 in Santa Clara, I am joined by my co-host Bruce Ravid (@BruceRave) of Ravid and Associates as we catch up with long time storage industry veteran Claus Mikkelsen (@YoClaus) and HDS Chief Scientist.

Bruce and Claus meet for the first time having been around and probably passed each other in the halls at various events, hence, its a small world, however there is always opportunity to meet somebody new. We also chat about SNW past and present, data storage, technologies, networking with people, travel and of course with Claus, touch on wine.

Note that Claus and me were apart of a consortium of people that collaborated on the original book The Resilient Enterprise released in spring of 2012 published by Veritas. Ok, nuff said.

Click here (right-click to download MP3 file) or on the microphone image to listen to the conversation with Claus Mikkelsen.

Also available via

Watch (and listen) for more StorageIO industry trends and perspectives audio blog posts pod casts and other upcoming events. Also be sure to heck out other related pod casts, videos, posts, tips and industry commentary at StorageIO.com and StorageIOblog.com.

Enjoy this episode from SNW Fall 2013 with Claus Mikkelsen.

Ok, nuff said.

Cheers gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press, 2011), The Green and Virtual Data Center (CRC Press, 2009), and Resilient Storage Networks (Elsevier, 2004)

twitter @storageio

April 4, 2013November 26, 2023

Conversation with Justin Stottlemyer of Shutterfly and object storage discussion

Now also available via

In this episode from SNW Spring 2013 in Orlando Florida, Bruce Ravid (@BruceRave) and me visit with Justin Stottlemyer (@JHStott) who is a Fellow and Storage Architect at Shutterfly.

Our conversation centers on how Justin and Shutterfly maximize their return on innovation (the new ROI) by using object storage along with other technology and techniques to create a resilient, scalable flexible data infrastructure.

Justin was at SNW presenting on overcoming object integration at Shutterfly where their data infrastructure consists of 80PB of storage to house over 30PB of user content data that continues to grow.

Example of how we have used Shutterfly to create photo books from vacations

For those not familiar, Shutterfly providers customers with free unlimited storage of their photos which can then be printed in coffee table type books such as the one shown in the above figure. My wife has used Shutterfly a few times to create photo books such as the one shown above in the image.

As you will hear Justin explain in the pod cast, photos get uploaded and ingested into their environment and then available for printing.

In addition to talking about object storage, private clouds, business continuance (BC) and disaster recovery, other topics include performance and capacity planning, maximizing return on innovation in addition to return on investment among other items.
Varies and managed by user interface

Listen in to hear how Justin and Shutterfly are currently managing 80PB of storage with over 30PB of user data that continues to grow.

Click here (right-click to download MP3 file) or on the microphone image to listen to the conversation with Justin and myself.

Also available via

Enjoy this episode from SNW Spring 2013 with Justin Stottlemyer of Shutterfly.

Speaking of cloud and object storage, check out www.objectstoragecenter.com to view more related material.

Ok, nuff said.

Cheers gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press, 2011), The Green and Virtual Data Center (CRC Press, 2009), and Resilient Storage Networks (Elsevier, 2004)

twitter @storageio

March 29, 2013March 7, 2022

March 2013 Server and StorageIO Update Newsletter

March 2013 News letter

Welcome to the March 2013 edition of the StorageIO Update news letter including a new format and added content.

You can get access to this news letter via various social media venues (some are shown below) in addition to StorageIO web sites and subscriptions.

Click on the following links to view the March 2013 edition as (HTML sent via Email) version, or PDF versions.

Visit the news letter page to view previous editions of the StorageIO Update.

You can subscribe to the news letter by clicking here.

Enjoy this edition of the StorageIO Update news letter, let me know your comments and feedback.

Nuff said for now

Cheers
Gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

March 25, 2013December 24, 2020

Cloud conversations: AWS EBS, Glacier and S3 overview (Part III)

Storage I/O industry trends image

Amazon Web Services (AWS) recently added EBS Optimized support for enhanced bandwidth EC2 instances (read more here). This industry trends and perspective cloud conversation is the third (tying the posts together) in a three-part series companion to the AWS EBS optimized post found here. Part I is here (closer look at EBS) and part II is here (closer look at S3).

Cloud storage and object storage I/O figure
Cloud and object storage access example via Cloud and Virtual Data Storage Networking

AWS cloud storage gateway

In 2012 AWS released their Storage Gateway that you can use and try for free here using either an EC2 Amazon Machine Instance (AMI), or deployed locally on a hypervisor such as VMware vSphere/ESXi. About a year ago I did a storage gateway post (First, second and third impressions) when it was first released. I will do a new post soon following up with my later impressions and experiences of having used it recently. For now, my quick (fourth impressions can be found here in this AWS Marketplace review). In general, the gateway is an AWS alternative to using third product gateway, appliances of software tools for accessing AWS storage.

Image courtesy of www.amazon.com

When deployed locally on a VM, the storage gateway communicates using the AWS API’s back to the S3 and EBS (depending on how configured) storage services. Locally, the storage gateway presents an iSCSI block access method for Windows or other servers to use.

There are two modes with one being Gateway-Stored and the other Gateway-Cached. Gateway-Stored uses your primary storage mapped to the storage gateway as primary storage and asynchronous (time delayed) snapshots (user defined) to S3 via EBS volumes. This is a handy way to have local storage for low latency access, yet use AWS for HA, BC and DR, along with a means for doing migration into or out of AWS. Gateway-cache mode places primary storage in AWS S3 with a local cached copy to reduce network overhead.

Storage I/O industry trends image

When I tried the gateway a month or so ago, using both modes, I was not able to view any of my data using standard S3 tools. For example if I looked in my S3 buckets the objects do not appear, something that AWS said had to do with where and how those buckets and objects are managed. Otoh, I was able to see EBS snapshots for the gateway-stored mode including using that as a means of moving data between local and AWS EC2 instances. Note that regardless of the AWS storage gateway mode, some local cache storage is needed, and likewise some EBS volumes will be needed depending on what mode is used.

When I used the gateway, a Windows Server mounted the iSCSI volume presented by the storage gateway and in turn served that to other systems as a shared folder. Thus while having block such as iSCSI is nice, a NAS (NFS or CIFS) presentation and access mode would also be useful. However more on the storage gateway in a future post. Also note that beyond the free trial period (you may have to pay for storage being used) for using the gateway, there are also fees for S3 and EBS storage volumes use.

What about Glacier?

Shortly after its release last year, I did this piece about Glacier and have since been doing some testing proof of concepts with it.

I like Glacier and its prospects for doing some various things, particular for inactive data including deep archives that will seldom if every be accessed, yet need to be retained. The business value proposition of Glacier is that it has a very high durability and low-cost assuming that you do not need to frequently access your data, and when you do, that you can wait 3 to 5 hours before retrieving it from your S3 buckets.

Access to Glacier is via API or AWS console so getting things into and out of it can be a challenge. For example I wanted to see if I could use AWS storage gateway to more easily bulk move things into Glacier via S3, however no luck, or at least today. Speaking of S3, by setting your policies you determine when objects get moved into Glacier as well as how long they will stay there, you can read more about Glacier here and via AWS here.

Storage I/O industry trends image

How much do these AWS services cost?

Fees vary depending on which region is selected, amount of space capacity, level or durability and availability, performance along with type of service. S3 pricing can be found here including a free trial tier along with optional fees. Other AWS fees for EC2 can be found here, EBS pricing here, Glacier here, and storage gateway costs are located here.

Note that there is a myth that cloud vendors have hidden fees which may be the case for some, however so far I have not seen that to be the case with AWS. However, as a consumer, designer or architect, doing your homework and looking at the above links among others you can be ready and understand the various fees and options. Hence like procuring traditional hardware, software or services, do your due diligence and be an informed shopper.

Amazon Web Services (AWS) image

Some more service cost notes include:

Note that with S3 Standard and RRS objects there is not a charge for deletion of objects, however there is a pro-rated charge per GByte of Glacier objects removed prior to 90 days. Glacier also allows up to 5% of your average monthly storage usage (pro-rated daily) to be restored with no charge, other fees apply for restoring larger amounts in a given period. Thus if you are planning on accessing and using data, analyze what your activity and usage will be as part of calculating your costs with Glacier. Read more about Glacier here.

Standard EBS volumes are changed by the amount of storage space capacity you provision in GB until released. For EBS snapshot copies there are fees for transferring data across regions, once moved, the rates of the new region apply for the snapshot.

Amazon Web Services (AWS) image

As with Standard volumes, volume storage for Provisioned IOPS volumes is charged by the amount you provision in GB per month. With Provisioned IOPS volumes, you are also charged by the amount you provision in IOPS pro-rated as a percentage of days you have it in use for the month.

Thus important for cloud storage planning to know not only your space requirements, also IOP’s, bandwidth, and level of availability as well as durability. so for Standard volumes, you will likely see a lower number of I/O requests on your bill than is seen by your application unless you sync all of your I/Os to disk. Thus pay attention to what your needs are in terms of availability (accessibility), durability (resiliency or survivability), space capacity, and performance.

Leverage AWS CloudWatch tools and API’s to monitoring that matter for timely insight and situational awareness into how EBS, EC2, S3, Glacier, Storage Gateway and other services are being used (or costing you). Also visit the AWS service health status dashboard to gain insight into how things are running to help gain confidence with cloud services and solutions.

Storage I/O industry trends image

When it comes to Cloud, Virtualization, Data and Storage Networking along with AWS among other services, tools and technologies including object storage, we are just scratching the surface here.

Hopefully this helps to fill in some gaps giving more information addressing questions, along with generating new ones to prepare for your journey with clouds. After all, don’t be scared of clouds. Be prepared, do your homework, identify your concerns and then address those to gain cloud confidence.

Additional reading and related items:

Cloud conversations: AWS EBS optimized instances

Cloud conversations: AWS EBS, Glacier and S3 overview (Part I)

Cloud conversations: AWS EBS, Glacier and S3 overview (Part II)

Cloud conversations: AWS Government Cloud (GovCloud)

Cloud conversations: Gaining cloud confidence from insights into AWS outages

AWS (Amazon) storage gateway, first, second and third impressions

Cloud conversations: Public, Private, Hybrid what about Community Clouds?

Amazon cloud storage options enhanced with Glacier

Amazon Web Services (AWS) and the NetFlix Fix?

Cloud conversation, Thanks Gartner for saying what has been said

Cloud and Virtual Data Storage Networking via Amazon.com

Seven Databases in Seven Weeks

www.objectstoragecenter.com

Ok, nuff said (for now).

Cheers
Gs

Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

March 25, 2013October 18, 2024

Cloud conversations: AWS EBS, Glacier and S3 overview (Part II S3)

Storage I/O industry trends image

Amazon Web Services (AWS) recently added EBS Optimized support for enhanced bandwidth EC2 instances (read more here). This industry trends and perspective cloud conversation is the second (looking at S3 object storage) in a three-part series companion to the AWS EBS optimized post found here. Part I is here (closer look at EBS) and part III is here (tying it all together).

For those not familiar, Simple Storage Services (S3), Glacier and Elastic Block Storage (EBS) are part of the AWS cloud storage portfolio of services. With S3, you specify a region where a bucket is created that will contain objects that can be written, read, listed and deleted. You can create multiple buckets in a region with unlimited number of objects ranging from 1 byte to 5 Tbytes in size per bucket. Each object has a unique, user or developer assigned access key. In addition to indicating which AWS region, S3 buckets and objects are provisioned using different levels of availability, durability, SLA’s and costs (view S3 SLA’s here).

AWS S3 example image

Cost will vary depending on the AWS region being used, along if Standard or Reduced Redundancy Storage (RSS) selected. Standard S3 storage is designed with 99.999999999% durability (how many copies exists) and 99.99% availability (how often can it be accessed) on an annual basis capable of two data centers becoming un-available.

As its name implies, for a lower fee and level of durability, S3 RRS has an annual durability of 99.999% and availability of 99.99% capable of a single data center loss. In the following figure durability is how many copies of data exist spread across different servers and storage systems in various data centers and availability zones.

cloud storage and object storage across availability zone image

What would you put in RRS vs. Standard S3 storage?

Items that need some level of persistence that can be refreshed, recreated or restored from some other place or pool of storage such as thumbnails or static content or read caches. Other items would be those that you could tolerant some downtime while waiting for data to be restored, recovered or rebuilt from elsewhere in exchange for a lower cost.

Different AWS regions can be chosen for regulatory compliance requirements, performance, SLA’s, cost and redundancy with authentication mechanisms including encryption (SSL and HTTPS) to make sure data is kept secure. Various rights and access can be assigned to objects including making them public or private. In addition to logical data protection (security, identity and access management (IAM), encryption, access control) policies also apply to determine level of durability and availability or accessibility of buckets and objects. Other attributes of buckets and objects include life-cycle management polices and logging of activity to the items. Also part of the objects are meta data containing information about the data being stored shown in a generic example below.

Cloud storage and object storage spread across availability zones figure

Access to objects is via standard REST and SOAP interfaces with an Application Programming Interface (API). For example default access is via HTTP along with a Bit Torrent interface with optional support via various gateways, appliances and software tools.

Cloud storage and object storage IO figure
Example cloud and object storage access

The above figure via Cloud and Virtual Data Storage Networking (CRC Press) shows a generic example applicable to AWS services including S3 being accessed in different ways. For example I access my S3 buckets and objects via Jungle Disk (one of the tools I use for data protection) that can also access my Rackspace Cloudfiles data. In the following figure there are examples of some of my S3 buckets and objects used by different applications and tools that I have in various AWS regions.

Image of AWS S3 usage
AWS S3 buckets and objects in different regions

Note that I sometimes use other AWS regions outside the US for testing purposes, for compliance purpose my production, business or personal data is only in the US regions.

The following figure is a generic example of how cloud and object storage are accessed using different tools, hardware, software and API’s along with gateways. AWS is an example of what is shown in the following figure as a Cloud Service and S3, EBS or Glacier as cloud storage. Common example API commands are also shown which will vary by different vendors, products or solution definitions or implementations. While Amazon S3 API which is REST HTTP based has become an industry de facto standard, there are other API’s including CDMI (Cloud Data Management Interface) developed by SNIA which has gained ISO accreditation.

Cloud storage and object storage I/O figure
Cloud and object storage access example via Cloud and Virtual Data Storage Networking

In addition to using Jungle Disk which manages my AWS keys and objects that it creates, I can also access my S3 objects via the AWS management console and web tools, also via third-party tools including Cyberduck.

Cyberduck tool.

Additional reading and related items:

Cloud conversations: AWS EBS optimized instances
Cloud conversations: AWS EBS, Glacier and S3 overview (Part I EBS)
Cloud conversations: AWS EBS, Glacier and S3 overview (Part III)
Cloud conversations: AWS Government Cloud (GovCloud)
Cloud conversations: Gaining cloud confidence from insights into AWS outages
AWS (Amazon) storage gateway, first, second and third impressions
Cloud conversations: Public, Private, Hybrid what about Community Clouds?
Amazon cloud storage options enhanced with Glacier
Amazon Web Services (AWS) and the NetFlix Fix?
Cloud conversation, Thanks Gartner for saying what has been said
Cloud and Virtual Data Storage Networking via Amazon.com
Seven Databases in Seven Weeks
www.objectstoragecenter.com
Continue reading part III (tying it all together) here.
Ok, nuff said (for now)
Cheers
Gs
Greg Schulz – Author Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio
All Comments, (C) and (TM) belong to their owners/posters, Other content (C) Copyright 2006-2024 Server StorageIO and UnlimitedIO LLC All Rights Reserved

March 25, 2013June 13, 2021

Cloud conversations: AWS EBS, Glacier and S3 overview (Part I)

Storage I/O industry trends image

Amazon Web Services (AWS) recently added EBS Optimized support for enhanced bandwidth EC2 instances (read more here). This industry trends and perspective cloud conversation is the first (looking at EBS) in a three-part series companion to the AWS EBS optimized post found here. Part II is here (closer look at S3) and part III is here (tying it all together).

For those not familiar, Simple Storage Services (S3), Glacier and Elastic Block Storage (EBS) are part of the AWS cloud storage portfolio of services. There are several other storage and data related service for little data database (SQL and NoSql based) other offerings include compute, data management, application and networking for different needs shown in the following image.

AWS Services Console via www.amazon.com

Simple Storage Service (S3) is commonly used in the context of cloud storage and object storage accessed via its S3 API. S3 can be used externally from outside AWS as well as within or via other AWS services. For example with Elastic Cloud Compute (EC2) including via the Amazon Storage Gateway (read more here and about EC2 here). Glacier is the AWS cold or deep storage service for inactive data and is a companion to S3 that you can read more about here.

S3 is well suited for both big and little data repositories of objects ranging from backup to archive to active video images and much more. In fact if you are using some of the different AaaS or SaaS services including backup or file and video sharing, those may be using S3 as its back-end storage repository. For example NetFlix leverages various AWS capabilities as part of its data and applications infrastructure (read more here).

AWS basics

AWS consists of multiple regions that contain multiple availability zones where data and applications are supported from.

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Note that objects stored in a region never leave that region, such as data stored in the EU west never leave Ireland, or data in the US East never leaves Virginia.

AWS does support the ability for user controlled movement of data between regions for business continuance (BC), high availability (HA) and disaster recovery (DR). Read more here at the AWS Security and Compliance site and in this AWS white paper.

What about EBS?

That brings us to Elastic Block Storage (EBS) that is used by EC2 (read more about EC2 and instances here) as storage for cloud and virtual machines or compute instances. In addition to using S3 as a persistent backing store or target for holding snapshots EBS can be thought of as primary storage. You can provision and allocate EBS volumes in the different data centers of the various AWS availability zones. As part of allocating your EBS volume you indicate the type (standard) or provisioned IOP’s or the new EBS Optimized volumes. EBS Optimized volumes enables instances that support the feature to have better IO performance to storage.

The following image shows an EC2 instance with EBS volumes (standard and provisioned IOPS’s) along with S3 volumes and snapshots. In the following example the instance and volumes are being served via the AWS US East region (Northern Virginia) using availability zone US East 1a. In addition, EBS optimized volumes are shown being used in the example to increase bandwidth or throughput performance between storage and the compute instance.

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Using the above as a basis, you can build on that to leverage multiple availability zones or regions for HA, BC and DR combined with application, network load balancing and other capabilities. Note that EBS volumes are protected for durability by being spread across different servers and storage in an availability zone. Additional protection is provided by using snapshots combined with S3. Additional BC and DR or HA protection can be accomplished by replicating data across availability zones.

SQL applications using cloud and object storage services

The above is an example of tying various components and services together. For example using different AWS availability zones, instances, EBS, S3 and other tools including those from third parties. Here is a link to a free chapter download from Cloud and Virtual Data Storage Networking (CRC Press) pertaining to data protection, BC and DR (available at Amazon here and Kindle here). In addition here is an AWS white paper on using their services for BC, HA and DR.

EBS volumes are created ranging in size from 1GByte to 1Tbyte in space capacity with multiple volumes being mapped or attached to an EC2 instances. EBS volumes appear as a virtual disk drive for block storage. From the EC2 instance and guest operating system you can mount, format and use the EBS volumes as any other block disk drive with your favorite tools and file systems. In addition to space capacity, EBS volumes are also provisioned with standard IO (e.g. disk based) performance or high performance Provisioned IOPS (e.g. SSD) for thousands of IOPS per instance. AWS states that a standard EBS volume should support about 100 IOP’s on average, with about 2,000 IOPS for a provisioned IOP volume. Need more than 2,000 IOPS, then the AWS recommendation is to use multiple IOP provisioned volumes with data spread across those. Following is an example of AWS EBS volumes seen via the EC2 management interface.

Image of mapping AWS EBS to ECS instance
AWS EC2 and EBS configuration status

Note that there is a 10 to 1 ratio of space capacity to IOP’s being provisioned. If you try to play a game of 1,000 IOPS provisioned on a 10GByte EBS volume to keep your costs down you are out of luck. Thus to get 1,000 IOPS’s you would need to allocate at least a 100GByte EBS volume of which you will be billed for the actual space used on a monthly pro-rated basis. The following is an example of provisioning an AWS EBS volume using provisioned IOPS in the US East region in the 1a availability zone.

Image of AWS EBS provisioned IOPs
Provisioning IOPS with EBS volume

Standard and Provisioned IOPS EBS volumes

Standard EBS volumes are good for boot images or other application usage that are not IO performance intensive. For database or other active applications where more performance is needed, then EBS Provisioned IOPS volumes are your option. Note that the provisioned IOP rate is persistent for the specific volume during its life. Thus if you set it and forget it including not using it without turning it off, you will be billed for provisioning it.

Additional reading and related items:

Cloud conversations: AWS EBS optimized instances

Cloud conversations: AWS EBS, Glacier and S3 overview (Part II S3)

Cloud conversations: AWS EBS, Glacier and S3 overview (Part III)

Cloud conversations: AWS Government Cloud (GovCloud)

Cloud conversations: Gaining cloud confidence from insights into AWS outages

AWS (Amazon) storage gateway, first, second and third impressions

Cloud conversations: Public, Private, Hybrid what about Community Clouds?

Amazon cloud storage options enhanced with Glacier

Amazon Web Services (AWS) and the NetFlix Fix?

Cloud conversation, Thanks Gartner for saying what has been said

Cloud and Virtual Data Storage Networking via Amazon.com