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 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.