Part II: How many IOPS can a HDD, HHDD or SSD do with VMware?

Sunday, May 19th, 2013

How many IOPS can a HDD, HHDD or SSD do? This is the second post of a two-part series looking at storage performance, specifically in the context of drive or device (e.g. mediums) characteristics across HDD, HHDD and SSD. In the first post the focus was around putting some context ...

How many IOPS can a HDD, HHDD or SSD do?

Sunday, May 19th, 2013

How many IOPS can a HDD, HHDD or SSD do? A common question I run across is how many IOPS (IO Operations Per Second) can a storage device or system do or give. The answer is or should be it depends. This is the first of a two-part series looking at storage ...

In the data center or information factory, not everything is the same

Tuesday, January 29th, 2013

Sometimes what should be understood, or that is common sense or that you think everybody should know needs to be stated. After all, there could be somebody who does not know what some assume as common sense or what others know for various reasons. At ...

Who will be winner with Oracle $10 Million dollar challenge?

Saturday, August 25th, 2012

In case you missed it, Oracle has a ten million dollar challenge (here, here and here) to prove that their servers and database software technologies are 5 times faster than IBM. Up to 10 winners open to U.S. Fortune 1000 companies running an Oracle 11g data warehouse on IBM Power ...

NAD recommends Oracle discontinue certain Exadata performance claims

Tuesday, July 24th, 2012

I Received the following press release in my inbox today from the National Advertising Division (NAD) recommending that Oracle stop making certain performance claims about Exadata after a complaint from IBM. In case you are not familiar with ExaData, it is a database machine or storage appliance that only supports ...

Give HP storage some love and short strokin

Thursday, July 12th, 2012

Following up from my last post over at InfoStor about metrics that matter, here is a link to a new piece that I did on storage vendors benchmarking and related topics. This new post looked at an storage performance council (SPC1) benchmark that HP did with their ...

Why FC and FCoE vendors get beat up over bandwidth?

Monday, June 4th, 2012

Have you noticed how Fibre Channel (FC) and FC over Ethernet (FCoE) switch and adapter vendors and their followers focus around bandwidth vs. response time, latency or other performance activity? For example, 8Gb FC (e.g. 8GFC), or 10Gb as opposed to latency and response time, or IOPS and other activity ...

How much SSD do you need vs. want?

Monday, June 4th, 2012

I have been getting asked by IT customers, VAR's and even vendors how much solid state device (SSD) storage is needed or should be installed to address IO performance needs to which my standard answer is it depends. I also am also being asked if there is rule of thumb (RUT) ...

Spring (May) 2012 StorageIO news letter

Sunday, May 20th, 2012

Spring (May) 2012 News letter Welcome to the Spring (May) 2012 edition of the Server and StorageIO Group (StorageIO) news letter. This follows the Fall (December) 2011 edition. You can get access to this news letter via various social media venues (some are shown below) in addition to StorageIO web ...

Are large storage arrays dead at the hands of SSD?

Thursday, May 17th, 2012

An industry trends and perspective.. Are large storage arrays dead at the hands of SSD? Short answer NO not yet. There is still a place for traditional storage arrays or appliances particular those with extensive features, functionality and reliability availability serviceability (RAS). In other words, there is still a place for large ...

Is SSD dead? No, however some vendors might be

Thursday, May 3rd, 2012

Is SSD dead? No, however some vendors might be In a recent conversation with Dave Raffo about the nand flash solid state disk (SSD) market, we talked about industry trends, perspectives and where the market is now as well as headed. One of my comments is, has been and will remain ...

More storage and IO metrics that matter

Thursday, May 3rd, 2012

It is great to see more conversations and coverage around storage metrics that matter beyond simply focusing on cost per GByte or TByte (e.g. space capacity). Likewise, it is also good to see conversations expanding beyond data footprint reduction (DFR) from a space capacity savings or reduction ratio to also ...

What is the best kind of IO? The one you do not have to do

Thursday, May 3rd, 2012

If no IO (input/output) operation is the best IO, than the second best IO is the one that can be done as close to the application and processor with best locality of reference. Then the third best IO is the one that can be done in less time, or at ...

More Storage IO momentus HHDD and SSD moments part II

Sunday, April 29th, 2012

This follows the first of a two-part series on my latest experiences with Hybrid Hard Disk Drives (HHDD's) and Solid State Devices (SSD's). In my ongoing last momentus moment post I discussed what I have done with HHDD's and setting the stage for expanded SSD use. I have the newer ...