Tag: durability

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Dell Technology World 2018 Announcement Summary

Dell Technology World 2018 Announcement Summary

Dell Technology World 2018 Announcement Summary
This is part one of a five-part series about Dell Technology World 2018 announcement summary. Last week (April 30-May 3) I traveled to Las Vegas Nevada (LAS) to attend Dell Technology World 2018 (e.g., DTW 2018) as a guest of Dell (that is a disclosure btw). There were several announcements along with plenty of other activity from sessions, meetings, hallway and event networking taking place at Dell Technology World DTW 2018.

Major data infrastructure technology announcements include:

  • PowerMax all-flash array (AFA) solid state device (SSD) NVMe storage system
  • PowerEdge four-socket 2U and 4U rack servers
  • XtremIO X2 AFA SSD storage system updates
  • PowerEdge MX preview of future composable servers
  • Desktop and thin client along with other VDI updates
  • Cloud and networking enhancements

Besides the above, additional data infrastructure related announcements were made in association with Dell Technology family members including VMware along with other partners, as well as customer awards. Other updates and announcements were tied to business updates from Dell Technology, Dell Technical Capital (venture capital), and, Dell Financial Services.

Dell Technology World Buzzword Bingo Lineup

Some of the buzzword bingo terms, topics, acronyms from Dell Technology World 2018 included AFA, AI, Autonomous, Azure, Bare Metal, Big Data, Blockchain, CI, Cloud, Composable, Compression, Containers, Core, Data Analytics, Dedupe, Dell, DFS (Dell Financial Services), DFR (Data Footprint Reduction), Distributed Ledger, DL, Durability, Fabric, FPGA, GDPR, Gen-Z, GPU, HCI, HDD, HPC, Hybrid, IOP, Kubernetes, Latency, MaaS (Metal as a Service), ML, NFV, NSX, NVMe, NVMeoF, PACE (Performance Availability Capacity Economics), PCIe, Pivotal, PMEM, RAID, RPO, RTO, SAS, SATA, SC, SCM, SDDC, SDS, Socket, SSD, Stamp, TBW (Terabytes Written per day), VDI, venture capital, VMware and VR among others.

Dell Technology World 2018 Venue
Dell Technology World DTW 2018 Event and Venue

Dell Technology World 2018 was located at the combined Palazzo and Venetian hotels along with adjacent Sands Expo center kicking off Monday, April 30th and wrapping up May 4th.

The theme for Dell Technology World DTW 2018 was make it real, which in some ways was interesting given the focus on virtual including virtual reality (VR), software-defined data center (SDDC) virtualization, data infrastructure topics, along with artificial intelligence (AI).

Virtual Sky Dell Technology World 2018
Make it real – Venetian Palazzo St. Mark’s Square on the way to Sands Expo Center

There was plenty of AI, VR, SDDC along with other technologies, tools as well as some fun stuff to do including VR games.

Dell Technology World 2018 Commons Area
Dell Technology World Village Area near Key Note and Expo Halls

Dell Technology World 2018 Commons Area Drones
Dell Technology World Drone Flying Area

During a break from some meetings, I used a few minutes to fly a drone using VR which was interesting. I Have been operating drones (See some videos here) visually without dependence on first-person view (FPV) or relying on extensive autonomous operations instead flying heads up by hand for several years. Needless to say, the VR was interesting, granted encountered a bit of vertigo that I had to get used to.

Dell Technology World 2018 Commons Area Virtual Village
More views of the Dell Technology World Village and Commons Area with VR activity

Dell Technology World 2018 Commons Area Virtual Village
Dell Technology World Village and VR area

Dell Technology World 2018 Commons Area Virtual Village
Dell Technology World Bean Bag Area

Dell Technology World 2018 Announcement Summary

Ok, nuff with the AI, ML, DL, VR fun, time to move on to the business and technology topics of Dell Technologies World 2018.

What was announced at Dell Technology World 2018 included among others:

Dell Technology World 2018 PowerMax
Dell PowerMax Front View

Subsequent posts in this series take a deeper look at the various announcements as well as what they mean.

Where to learn more

Learn more about Dell Technology World 2018 and related topics via the following links:

Additional learning experiences along with common questions (and answers), as well as tips can be found in Software Defined Data Infrastructure Essentials book.

Software Defined Data Infrastructure Essentials Book SDDC

What this all means

On the surface it may appear that there was not much announced at Dell Technology World 2018 particular compared to some of the recent Dell EMC Worlds and EMC Worlds. However turns out that there was a lot announced, granted without some of the entertainment and circus like atmosphere of previous events. Continue reading here Part II Dell Technology World 2018 Modern Data Center Announcement Details in this series, along with Part III here, Part IV here (including PowerEdge MX composable infrastructure leveraging Gen-Z) and Part V (servers and converged) here.

Ok, nuff said, for now.

Cheers Gs

Greg Schulz – Microsoft MVP Cloud and Data Center Management, VMware vExpert 2010-2017 (vSAN and vCloud). Author of Software Defined Data Infrastructure Essentials (CRC Press), as well as Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press), Resilient Storage Networks (Elsevier) and twitter @storageio. Courteous comments are welcome for consideration. First published on https://storageioblog.com any reproduction in whole, in part, with changes to content, without source attribution under title or without permission is forbidden.

All Comments, (C) and (TM) belong to their owners/posters, Other content (C) Copyright 2006-2024 Server StorageIO and UnlimitedIO. All Rights Reserved. StorageIO is a registered Trade Mark (TM) of Server StorageIO.

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Part II Dell Technology World 2018 Modern Data Center Announcement Details

Part II Dell Technology World 2018 Modern Data Center Announcement Details

Dell Technology World 2018 Modern Data Center Announcement Summary
This is Part II Dell Technology World 2018 Modern Data Center Announcement Details that is part of a five-post series (view part I here, part III here, part IV here and part V here). Last week (April 30-May 3) I traveled to Las Vegas Nevada (LAS) to attend Dell Technology World 2018 (e.g., DTW 2018) as a guest of Dell (that is a disclosure btw).

Dell Technology World 2018 Venue
Dell Technology World DTW 2018 Event and Venue

What was announced at Dell Technology World 2018 included among others:

Dell Technology World 2018 PowerMax
Dell PowerMax Front View

Dell Technology World 2018 Modern Data Center Announcement Details

Dell Technologies data infrastructure related announcements included new solutions competencies and expanded services deployment competencies with partners to boost deal size and revenues. An Internet of Things (IoT) solution competency was added with others planned including High-Performance Computing (HPC) / Super Computing (SC), Data Analytics, Business Applications and Security related topics. Dell Financial Services flexible consumption models announced at Dell EMC World 2017 provide flexible financing options for both partners as well as their clients.

Flexible Dell Financial Services cloud-like consumption model (e.g., pay for what you use) enhancements include reduced entry points for the Flex on Demand solutions across the Dell EMC storage portfolio. For example, Flex on Demand velocity pricing models for Dell EMC Unity All-Flash Array (AFA) solid state device (SSD) storage solution, and XtremIO X2 AFA systems with price points of less than USD 1,000.00 per month. The benefit is that Dell partners have a financial vehicle to help their midrange customers run consumption-based financing for all-flash storage without custom configurations resulting in faster deployment opportunities.

In other partner updates, Dell Technologies is enhancing the incentive program Dell EMC MyRewards program to help drive new business. Dell EMC MyRewards Program is an opt-in, points-based reward program for solution provider sales reps and systems engineers. MyRewards program is slated to replace the existing Partner Advantage and Sell & Earn programs with bigger and better promotions (up to 3x bonus payout, simplified global claiming).

What this means for partners is the ability to earn more while offering their clients new solutions with flexible financing and consumption-based pricing among other options. Other partner enhancements include update demo program, Proof of Concept (POC) program, and IT transformation campaigns.

Powering up the Modern Data Center and Future of Work

Powering up the modern data center along with future of work, part of the make it real theme of Dell Technologies world 2018 includes data infrastructure server, storage, I/O networking hardware, software and service solutions. These data infrastructure solutions include NVMe based storage, Converged Infrastructure (CI), hyper-converged infrastructure (HCI), software-defined data center (SDDC), VMware based multi-clouds, along with modular infrastructure resources.

In addition to server and storage data infrastructure resources form desktop to data center, Dell also has a focus of enabling traditional as well as emerging Artificial Intelligence (AI), Machine Learning (ML) and Deep Learning (DL) as well as analytics applications. Besides providing data infrastructure resources to support AI, ML, DL, IoT and other applications along with their workloads, Dell is leveraging AI technology in some of their products for example PowerMax.

Other Dell Technologies announcements include Virtustream cloud risk management and compliance, along with Epic and SAP Digital Health healthcare software solutions. In addition to Virtustream, Dell Technologies cloud-related announcements also include VMware NSX network Virtual Cloud Network with Microsoft Azure support along with security enhancements. Refer here to recent April VMware vSphere, vCenter, vSAN, vRealize and other Virtual announcements as well as here for March VMware cloud updates.

Where to learn more

Learn more about Dell Technology World 2018 and related topics via the following links:

Additional learning experiences along with common questions (and answers), as well as tips can be found in Software Defined Data Infrastructure Essentials book.

Software Defined Data Infrastructure Essentials Book SDDC

What this all means

The above set of announcements span business to technology along with partner activity. Continue reading here (Part III Dell Technology World 2018 Storage Announcement Details) of this series, and part I (general summary) here, along with Part IV (PowerEdge MX Composable) here and part V here.

Ok, nuff said, for now.

Cheers Gs

Greg Schulz – Microsoft MVP Cloud and Data Center Management, VMware vExpert 2010-2017 (vSAN and vCloud). Author of Software Defined Data Infrastructure Essentials (CRC Press), as well as Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press), Resilient Storage Networks (Elsevier) and twitter @storageio. Courteous comments are welcome for consideration. First published on https://storageioblog.com any reproduction in whole, in part, with changes to content, without source attribution under title or without permission is forbidden.

All Comments, (C) and (TM) belong to their owners/posters, Other content (C) Copyright 2006-2024 Server StorageIO and UnlimitedIO. All Rights Reserved. StorageIO is a registered Trade Mark (TM) of Server StorageIO.

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Part III Dell Technology World 2018 Storage Announcement Details

Part III Dell Technology World 2018 Storage Announcement Details

Part III Dell Technology World 2018 Storage Announcement Details

This is Part III Dell Technology World 2018 Storage Announcement Details that is part of a five-post series (view part I here, part II here, part IV (PowerEdge MX Composable) here and part V here). Last week (April 30-May 3) I traveled to Las Vegas Nevada (LAS) to attend Dell Technology World 2018 (e.g., DTW 2018) as a guest of Dell (that is a disclosure btw).

Dell Technology World 2018 Storage Announcements Include:

  • PowerMax – Enterprise class tier 0 and tier 1 all-flash array (AFA)
  • XtremIO X2 – Native replication and new entry-level pricing

Dell Technology World 2018 PowerMax back view
Back view of Dell PowerMax

Dell PowerMax Something Old, Something New, Something Fast Near You Soon

PowerMax is the new companion to VMAX. Positioned for traditional tier 0 and tier 1 enterprise-class applications and workloads, PowerMax is optimized for dense server virtualization and SDDC, SAP, Oracle, SQL Server along with other low-latency, high-performance database activity. Different target workloads include Mainframe as well as Open Systems, AI, ML, DL, Big Data, as well as consolidation.

The Dell PowerMax is an all-flash array (AFA) architecture with an end to end NVMe along with built-in AI and ML technology. Building on the architecture of Dell EMC VMAX (some models still available) with new faster processors, full end to end NVMe ready (e.g., front-end server attachment, back-end devices).

The AI and ML features of PowerMax PowerMaxOS include an engine (software) that learns and makes autonomous storage management decisions, as well as implementations including tiering. Other AI and ML enabled operations include performance optimizations based on I/O pattern recognition.

Other features of PowerMax besides increased speeds, feeds, performance includes data footprint reduction (DFR) inline deduplication along with enhanced compression. The DFR benefits include up to 5:1 data reduction for space efficiency, without performance impact to boost performance effectiveness. The DFR along with improved 2x rack density, along with up to 40% power savings (your results may vary) based on Dell claims to enable an impressive amount of performance, availability, capacity, economics (e.g., PACE) in a given number of cubic feet (or meters).

There are two PowerMax models including 2000 (scales from 1 to 2 redundant controllers) and 8000 (scales from 1 to 8 redundant controller nodes). Note that controller nodes are Intel Xeon multi-socket, multi-core processors enabling scale-up and scale-out performance, availability, and capacity. Competitors of the PowerMax include AFA solutions from HPE 3PAR, NetApp, and Pure Storage among others.

Dell Technology World 2018 PowerMax Front View
Front view of Dell PowerMax

Besides resiliency, data services along with data protection, Dell is claiming PowerMax is 2x faster than their nearest high-end storage system competitors with up to 150GB/sec (e.g., 1,200Gbps) of bandwidth, as well as up to 10 million IOPS with 50% lower latency compared to previous VMAX.

PowerMax is also a full end to end NVMe ready (both back-end and front-end). Back-end includes NVMe drives, devices, shelves, and enclosures) as well as front-end (future NVMe over Fabrics, e.g., NVMeoF). Being NVMeoF ready enables PowerMax to support future front-end server network connectivity options to traditional SAN Fibre Channel (FC), iSCSI among others.

PowerMax is also ready for new, emerging high speed, low-latency storage class memory (SCM).  SCM is the next generation of persistent memories (PMEM) having performance closer to traditional DRAM while persistence of flash SSD. Examples of SCM technologies entering the market include Intel Optane based on 3D XPoint, along with others such as those from Everspin among others.

IBM Z Zed Mainframe at Dell Technology World 2018
An IBM “Zed” Mainframe (in case you have never seen one)

Based on the performance claims, the Dell PowerMax has an interesting if not potentially industry leading power, performance, availability, capacity, economic footprint per cubic foot (or meter). It will be interesting to see some third-party validation or audits of Dell claims. Likewise, I look forward to seeing some real-world applied workloads of Dell PowerMax vs. other storage systems. Here are some additional perspectives Via SearchStorage: Dell EMC all-flash PowerMax replaces VMAX, injects NVMe


Dell PowerMax Visual Studio (Image via Dell.com)

To help with customer decision making, Dell has created an interactive VMAX and PowerMax configuration studio that you can use to try out as well as learn about different options here. View more Dell PowerMax speeds, feeds, slots, watts, features and functions here (PDF).

Dell Technology World 2018 XtremIO X2

XtremIO X2

Dell XtremIO X2 and XIOS 6.1 operating system (software-defined storage) enhanced with native replication across wide area networks (WAN). The new WAN replication is metadata-aware native to the XtremIO X2 that implements data footprint reduction (DFR) technology reducing the amount of data sent over network connections. The benefit is more data moved in a given amount of time along with better data protection requiring less time (and network) by only moving unique changed data.

Dell Technology World 2018 XtremIO X2 back view
Back View of XtremIO X2

Dell EMC claims to reduce WAN network bandwidth by up to 75% utilizing the new native XtremIO X2 native asynchronous replication. Also, Dell says XtremIO X2 requires up to 38% less storage space at disaster recovery and business resiliency locations while maintaining predictable recovery point objectives (RPO) of 30 seconds. Another XtremIO X2 announcement is a new entry model for customers at up to 55% lower cost than previous product generations. View more information about Dell XtremIO X2 here, along with speeds feeds here, here, as well as here.

What about Dell Midrange Storage Unity and SC?

Here are some perspectives Via SearchStorage: Dell EMC midrange storage keeps its overlapping arrays.

Dell Bulk and Elastic Cloud Storage (ECS)

One of the questions I had going into Dell Technology World 2018 was what is the status of ECS (and its predecessors Atmos as well as Centera) bulk object storage is given lack of messaging and news around it. Specifically, my concern was that if ECS is the platform for storing and managing data to be preserved for the future, what is the current status, state as well as future of ECS.

In conversations with the Dell ECS folks, ECS which has encompassed Centera functionality and it (ECS) is very much alive, stay tuned for more updates. Also, note that Centera has been EOL. However, its feature functionality has been absorbed by ECS meaning that data preserved can now be managed by ECS. While I can not divulge the details of some meeting discussions, I can say that I am comfortable (for now) with the future directions of ECS along with the data it manages, stay tuned for updates.

Dell Data Protection

What about Data Protection? Security was mentioned in several different contexts during Dell Technology World 2018, as was a strong physical security presence seen at the Palazzo and Sands venues. Likewise, there was a data protection presence at Dell Technologies World 2018 in the expo hall, as well as with various sessions.

What was heard was mainly around data protection management tools, hybrid, as well as data protection appliances and data domain-based solutions. Perhaps we will hear more from Dell Technologies World in the future about data protection related topics.

Where to learn more

Learn more about Dell Technology World 2018 and related topics via the following links:

Additional learning experiences along with common questions (and answers), as well as tips can be found in Software Defined Data Infrastructure Essentials book.

Software Defined Data Infrastructure Essentials Book SDDC

What this all means

If there was any doubt about would Dell keep EMC storage progressing forward, the above announcements help to show some examples of what they are doing. On the other hand, lets stay tuned to see what news and updates appear in the future pertaining to mid-range storage (e.g. Unity and SC) as well as Isilon, ScaleIO, Data Protection platforms as well as software among other technologies.

Continue reading part IV (PowerEdge MX Composable and Gen-Z) here in this series, as well as part I here, part II here, part IV (PowerEdge MX Composable) here, and, part V here.

Ok, nuff said, for now.

Cheers Gs

Greg Schulz – Microsoft MVP Cloud and Data Center Management, VMware vExpert 2010-2017 (vSAN and vCloud). Author of Software Defined Data Infrastructure Essentials (CRC Press), as well as Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press), Resilient Storage Networks (Elsevier) and twitter @storageio. Courteous comments are welcome for consideration. First published on https://storageioblog.com any reproduction in whole, in part, with changes to content, without source attribution under title or without permission is forbidden.

All Comments, (C) and (TM) belong to their owners/posters, Other content (C) Copyright 2006-2024 Server StorageIO and UnlimitedIO. All Rights Reserved. StorageIO is a registered Trade Mark (TM) of Server StorageIO.

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Part IV Dell Technology World 2018 PowerEdge MX Gen-Z Composable Infrastructure

Part IV Dell Technology World 2018 PowerEdge MX Gen-Z Composable Infrastructure

Part IV Dell Technology World 2018 PowerEdge MX Gen-Z Composable Infrastructure
This is Part IV Dell Technology World 2018 PowerEdge MX Gen-Z Composable Infrastructure that is part of a five-post series (view part I here, part II here, part III here and part V here). Last week (April 30-May 3) I traveled to Las Vegas Nevada (LAS) to attend Dell Technology World 2018 (e.g., DTW 2018) as a guest of Dell (that is a disclosure btw).

Introducing PowerEdge MX Composable Infrastructure (the other CI)

Dell announced at Dell Technology World 2018 a preview of the new PowerEdge MX (kinetic) family of data infrastructure resource servers. PowerEdge MX is being developed to meet the needs of resource-centric data infrastructures that require scalability, as well as performance availability, capacity, economic (PACE) flexibility for diverse workloads. Read more about Dell PowerEdge MX, Gen-Z and composable infrastructures (the other CI) here.

Some of the workloads being targeted by PowerEdge MX include large-scale dense SDDC virtualization (and containers), private (or public clouds by service providers). Other workloads include AI, ML, DL, data analytics, HPC, SC, big data, in-memory database, software-defined storage (SDS), software-defined networking (SDN), network function virtualization (NFV) among others.

The new PowerEdge MX previewed will be announced later in 2018 featuring a flexible, decomposable, as well as composable architecture that enables resources to be disaggregated and reassigned or aggregated to meet particular needs (e.g., defined or composed). Instead of traditional software defined virtualization carving up servers in smaller virtual machines or containers to meet workload needs, PowerEdge MX is part of a next-generation approach to enable server resources to be leveraged at a finer granularity.

For example, today an entire server including all of its sockets, cores, memory, PCIe devices among other resources get allocated and defined for use. A server gets defined for use by an operating system when bare metal (or Metal as a Service) or a hypervisor. PowerEdge MX (and other platforms expected to enter the market) have a finer granularity where with a proper upper layer (or higher altitude) software resources can be allocated and defined to meet different needs.

What this means is the potential to allocate resources to a given server with more granularity and flexibility, as well as combine multiple server’s resources to create what appears to be a more massive server. There are vendors in the market who have been working on and enabling this type of approach for several years ranging from ScaleMP to startup Liqid and Tidal among others. However, at the heart of the Dell PowerEdge MX is the new emerging Gen-Z technology.

If you are not familiar with Gen-Z, add it to your buzzword bingo lineup and learn about it as it is coming your way. A brief overview of Gen-Z consortium and Gen-Z material and primer information here. A common question is if Gen-Z is a replacement for PCIe which for now is that they will coexist and complement each other. Another common question is if Gen-Z will replace Ethernet and InfiniBand and the answer is for now they complement each other. Another question is if Gen-Z will replace Intel Quick Path and another CPU device and memory interconnects and the answer is potentially, and in my opinion, watch to see how long Intel drags its feet.

Note that composability is another way of saying defined without saying defined, something to pay attention too as well as have some vendor fun with. Also, note that Dell is referent to PowerEdge MX and Kinetic architecture which is not the same as the Seagate Kinetic Ethernet-based object key value accessed drive initiative from a few years ago (learn more about Seagate Kinetic here). Learn more about Gen-Z and what Dell is doing here.

Where to learn more

Learn more about Dell Technology World 2018 and related topics via the following links:

Additional learning experiences along with common questions (and answers), as well as tips can be found in Software Defined Data Infrastructure Essentials book.

Software Defined Data Infrastructure Essentials Book SDDC

What this all means

Dell has provided a glimpse of what they are working on pertaining composable infrastructure, the other CI, as well as Gen-Z and related next generation of servers with PowerEdge MX as well as Kinetic. Stay tuned for more about Gen-Z and composable infrastructures. Continue reading Part V (servers converged) in this series here, as well as part I here, part II here and part III here.

Ok, nuff said, for now.

Cheers Gs

Greg Schulz – Microsoft MVP Cloud and Data Center Management, VMware vExpert 2010-2017 (vSAN and vCloud). Author of Software Defined Data Infrastructure Essentials (CRC Press), as well as Cloud and Virtual Data Storage Networking (CRC Press), The Green and Virtual Data Center (CRC Press), Resilient Storage Networks (Elsevier) and twitter @storageio. Courteous comments are welcome for consideration. First published on https://storageioblog.com any reproduction in whole, in part, with changes to content, without source attribution under title or without permission is forbidden.

All Comments, (C) and (TM) belong to their owners/posters, Other content (C) Copyright 2006-2024 Server StorageIO and UnlimitedIO. All Rights Reserved. StorageIO is a registered Trade Mark (TM) of Server StorageIO.

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Can RAID extend the life of nand flash SSD?

Storage I/O trends

Can RAID extend nand flash SSD life?

Imho, the short answer is YES, under some circumstances.

There is a myth and some FUD that RAID (Redundant Array of Independent Disks) can shorten the life durability of nand flash SSD (Solid State Device) vs. HDD (Hard Disk Drives) due to extra IOP’s. The reality is that depending on how configured, RAID level, implementation and other factors, nand flash SSD can be extended as I discuss in this here video.

Video

Nand flash SSD cells and wear

First, there is a myth that nand flash SSD does not have moving parts like hard disk drives (HDD’s) thus do not wear out or break. That is just a myth in that nand flash by its nature wears out with write usage. This is due to how they store data in cells that have a rated number of program erase (P/E) cycles that vary by type of medium. For example, Single Level Cell (SLC) has a longer P/E life duration vs. Multi-Level Cells (MLC) and eMLC that stack multiple cells together.

There are a number of factors that contribute to nand flash wear, also known as duty cycle or durability tied to P/E. For example, some storage systems or controllers do a better job both at the lower level flash translation layer (FTL) in addition to controllers, firmware, caching using DRAM and IO optimization such as write ordering or grouping.

Now what about this RAID and SSD thing?

Ok first as a recap keep in mind that there are many RAID levels along with variations, enhancements and where, or how implemented ranging from software to hardware, adapters to controllers to storage systems.

In the case of RAID 1 or mirroring, just like replication or other one to one or one too many copy operation a write to one device is echoed to another. In the case of RAID 5, data is spread across drives and parity; however, the parity is rotated across all drives in an equal manner.

Some FUD or myths or misunderstandings come into play is that not all RAID 5 implementations as an example are not the same. Some do a better job of buffering or caching data in battery protected mirrored DRAM memory until a full stripe write can occur, or if needed, a partial write.

Another attribute is the chunk or shard size (how much data is sent to each drive member) along with the stripe width (how many drives). Some systems have narrow stripes of say 3+1 or 4+1 or 5+1 while others can be 14+1 or 15+1 or wider. Thus, data can be written across a wider number of drives reducing the P/E consumption or use of a single drive depending on implementation.

How about RAID 6 (dual parity)?

Same thing, it is a matter of how well the implementation is, how the write gathering is done and so forth.

What about RAID wearing out nand flash SSD?

While it is possible that it has or can occur depending on type of RAID implementation, lack of caching or optimization, configuration, type of SSD, RAID level and other things, in general I will say myth busted.

Want some proof?

I could go through a long technical proof point and citing lots of facts, figures, experts and so forth leaving you all silenced and dazed similar to the students listening to Ben Stein in Ferris Buelers day off (Click here to see what I mean) asking “anybody anybody Buleler?

Ben Stein via https://nostagjicmoviesandthings.blogspot.com
Image via nostagjicmoviesandthings.blogspot.com

How about some simple SSD and storage math?

On a very conservative basis, my estimate is that around 250PB of nand flash SSD drives are shipped and installed on a revenue basis attached to or in storage systems and appliances. Combine what Dell + DotHill + EMC + Fujitsu + HDS + HP + IBM (including TMS) + NEC + NetApp + NEC + Oracle among other legacy along with new all flash as well as hybrid vendors (e.g. Cloudbyte, FusionIO (Via their Nexgen acquisition), Kaminario, Greenbytes, Nutanix or Nimble, Purestorage, Starboard or Solidfire, Tegile or Tintri, Violin or Whiptail among others).

It is also a safe assumption based on how customers configure and use those and other storage systems is with some form of RAID. Thus if things were as bad as some researchers were, vendors and their pundits have made them out to be, wouldn’t’t we be hearing of those issues?

Is it just a RAID 5 problem and that RAID 6 magically corrects the problem?

Well, that depends on apples to apples vs. apples to oranges comparisons.

For example if you are using a 14+2 (16 drive) RAID 6 to compare to say a 3+1 (4 drive) RAID 5 that is not a fair comparison. Granted, it is a handy one if you are a vendor that supports wider RAID groups, stripes and ranks vs. those who do not. However also keep in mind that some legacy vendors actually also support wide stripes and RAID groups.

So in some cases the magic is not in the RAID level, rather the implementation or how configured or lack thereof.

Video

Watch this TechTarget produced video recorded live while I was at EMCworld 2013 to learn more.

Otherwise, 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

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Cloud conversations: Gaining cloud confidence from insights into AWS outages

StorageIO industry trends cloud, virtualization and big data

This is the first of a two-part industry trends and perspectives series looking at how to learn from cloud outages (read part II here).

In case you missed it, there were some public cloud outages during the recent Christmas 2012-holiday season. One incident involved Microsoft Xbox (view the Microsoft Azure status dashboard here) users were impacted, and the other was another Amazon Web Services (AWS) incident. Microsoft and AWS are not alone, most if not all cloud services have had some type of incident and have gone on to improve from those outages. Google has had issues with different applications and services including some in December 2012 along with a Gmail incident that received covered back in 2011.

For those interested, here is a link to the AWS status dashboard and a link to the AWS December 24 2012 incident postmortem. In the case of the recent AWS incident which affected users such as Netflix, the incident (read the AWS postmortem and Netflix postmortem) was tied to a human error. This is not to say AWS has more outages or incidents vs. others including Microsoft, it just seems that we hear more about AWS when things happen compared to others. That could be due to AWS size and arguably market leading status, diversity of services and scale at which some of their clients are using them.

Btw, if you were not aware, Microsoft Azure is more than just about supporting SQLserver, Exchange, SharePoint or Office, it is also an IaaS layer for running virtual machines such as Hyper-V, as well as a storage target for storing data. You can use Microsoft Azure storage services as a target for backing up or archiving or as general storage, similar to using AWS S3 or Rackspace Cloud files or other services. Some backup and archiving AaaS and SaaS providers including Evault partner with Microsoft Azure as a storage repository target.

When reading some of the coverage of these recent cloud incidents, I am not sure if I am more amazed by some of the marketing cloud washing, or the cloud bashing and uniformed reporting or lack of research and insight. Then again, if someone repeats a myth often enough for others to hear and repeat, as it gets amplified, the myth may assume status of reality. After all, you may know the expression that if it is on the internet then it must be true?

Images licensed for use by StorageIO via
Atomazul / Shutterstock.com

Have AWS and public cloud services become a lightning rod for when things go wrong?

Here is some coverage of various cloud incidents:

The above are a small sampling of different stories, articles, columns, blogs, perspectives about cloud services outages or other incidents. Assuming the services are available, you can Google or Bing many others along with reading postmortems to gain insight into what happened, the cause, effect and how to prevent in the future.

Do these recent incidents show a trend of increased cloud outages? Alternatively, do they say that the cloud services are being used more and on a larger basis, thus the impacts become more known?

Perhaps it is a mix of the above, and like when a magnetic storage tape gets lost or stolen, it makes for good news or copy, something to write about. Granted there are fewer tapes actually lost than in the past, and far fewer vs. lost or stolen laptops and other devices with data on them. There are probably other reasons such as the lightning rod effect given how much industry hype around clouds that when something does happen, the cynics or foes come out in force, sometimes with FUD.

Similar to traditional hardware or software based product vendors, some service providers have even tried to convince me that they have never had an incident, lost or corrupted or compromised any data, yeah, right. Candidly, I put more credibility and confidence in a vendor or solution provider who tells me that they have had incidents and taken steps to prevent them from recurring. Granted those steps might be made public while others might be under NDA, at least they are learning and implementing improvements.

As part of gaining insights, here are some links to AWS, Google, Microsoft Azure and other service status dashboards where you can view current and past situations.

What is your take on IT clouds? Click here to cast your vote and see what others are thinking about clouds.

Ok, nuff said for now (check out part II here )

Disclosure: I am a customer of AWS for EC2, EBS, S3 and Glacier as well as a customer of Bluehost for hosting and Rackspace for backups. Other than Amazon being a seller of my books (and my blog via Kindle) along with running ads on my sites and being an Amazon Associates member (Google also has ads), none of those mentioned are or have been StorageIO clients.

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)

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