Home > Performance, Virtualisation > Data Storage for VDI – Part 1 – A Personal View

Data Storage for VDI – Part 1 – A Personal View


What an insanely busy three months it’s been since my last blog post, I got a promotion, started learning about how marketing really works (as it turns out marketing people aren’t really evil at all) and started working on our local alliance relationships with VMware, Cisco and Microsoft. The good thing about this is that I’ve had stacks of great ideas for blog posts, the bad thing is that I’ve had almost no time to get them into a fit state for publishing. What finally goaded me into action was a blog post entitled F*** the SAN. VDI storage should be local! . Of course working for a SAN vendor I was somewhat alarmed by the assertion, especially seeing that we pride ourselves in helping VDI deployments to be easier, cheaper and more reliable. I read through the post along with Understanding how storage design has a big impact on your VDI (UPDATED), and  How the hidden “SLA bump” can kill your VDI project: You’d better know your desktop SLAs going in!, and figured that I finally had a good enough reason to get blogging again. Brian’s first statement is

Most of us have learned that the biggest constraint / bottleneck for desktop disk image storage is not storage capacity, but IOPS

which is where he references Understanding how storage design has a big impact on your VDI (UPDATED) by Ruben Spruijt I read through this and found a number of interesting assertions that are mostly correct, however I’ll spend the next few entries of this blog post addressing some of what appear to be minor, but which IMHO are potentially important inaccuracies.

Before I start I’d like to say that I think Ruben wrote a truly excellent post. It is not my intention to disparage the work done there, it’s just that from a storage guy’s point of view, and more specifically a NetApp storage guy, some of the information deserves clarification.

The rest of this post was originally about 6000 (yes six thousand) words long. Based on some interesting and constructive feeback such as  “I got half way through and then got bored”, and some gentle encouragement from friends, I’ve modified the content, and split the rest into a multi-part post which can be found below.

Data Storage for VDI – Part 2 – Disk Latencies

Data Storage for VDI – Part 3 – Read and Write Caching

Data Storage for VDI – Part 4 – The impact of RAID on performance

Data Storage for VDI – Part 5 – RAID-DP + WAFL The ultimate write accelerator

Data Storage for VDI – Part 6 – Data ONTAP Improving Read Performance

Data Storage for VDI – Part 7 – 1000 heavy users on 18 spindles

Data Storage for VDI – Part 8 – Misalignment

  1. Kevin
    July 22, 2010 at 11:17 pm

    Regarding your long posts. As long as they have good info, keep them coming. Thanks for the insights.

  1. July 18, 2010 at 11:37 pm
  2. May 10, 2011 at 2:39 am

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