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Performance and bench-marking tools
So you need to do some disk performance testing? Maybe some benchmarking? What tools are out there to help you out? Well I am glad you asked... here are some that I use on my daily travels: IOmeter IOmeter is an old classic, with emphasis on the word old. At time of writing, the most recent update was from 2006 . However it remains very popular mainly because it is free and easy to use.... [More]
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XIV Release 3.1 - SSD Read Cache is go!
In July last year I blogged about a brief history of XIV . In that post I detailed how the XIV began as the Nextra, was then released as the IBM XIV and then updated to the XIV Gen3. So this means last year we saw release 3.0 of the XIV. At the risk of getting over excited, some of the achievements of the IBM XIV have been truly remarkable: There are 59 Clients with more than 1 PB each of usable... [More]
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New SVC Storage Performance Council SPC-1 benchmark breaks 500,000 IOPS barrier
The IBM SVC has has been setting records in SPC-1 (OLTP-like) benchmarks for many years. However recently HP stole the crown with a 3Par benchmark of 450,212.66 IOPS. But in breaking news, the SVC is back on top with the very first SPC benchmark that exceeded 500,000 IOPS (520,043.99 to be precise!). You can see the executive summary here . This benchmark used eight of the current SVC... [More]
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SVC and Storwize V7000 Release 6.3: Performance Monitor Panel
With the 6.3 release of the Storwize V7000 and SVC code (which I blogged about here ), there are so many new features and functions that I have plenty more to blog about! The first new feature I blogged about was LDAP support, but an existing feature that has been enhanced is the performance monitor (brought in with release 6.2). When this first came out I put a video on You Tube showing what... [More]
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XIV and QoS - Using new Performance Classes
I have been exploring some of the new features added in XIV firmware version 10.2.4. Today I look at QoS (Quality of Service). This new feature allows you to restrict how much IO (in IOs per second or IOPS) or throughput (in megabytes per second or MBps) an individual host can generate. We do this by creating a new construct called a Performance Class . We can create up to four different... [More]
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