As I get deeper into the design aspect of all things vSphere I have started to realize that workload characterization is a key competency when it comes to right-sizing every aspect of your design. When characterizing the I/O workload of existing virtual workloads, there aren’t too many tools available (that I’m aware of) to accomplish this task. The two tools that I have used in the past are Perfmon (only in Windows guests) and vscsiStats
Using either tool you can perform a workload characterization or troubleshoot storage performance. For more details on how to use either tool, check out VMware KB2010970 for using Perfmon and check out Cormac Hogan’s post on “Getting started with vscsiStats” here
If you Google vscsiStats you’ll find a decent amount of blog posts on how to use it, as well as how to interpret the results. While I find the tool really useful, I haven’t heard of a lot of people that ever really use it (maybe they have if they’re studying for their VCAP5-DCA).
I really want to know if people really don’t use it, why? Or if they do use it, I want to know that too! I’d like each of you to PLEASE take 3-5 minutes of your time and answer the five question survey that is linked below. The survey does focus around vscsiStats, but there is room to throw out some alternatives. You’ll have until
September 20th September 27th @ 11:59pm EST to complete the survey
As a thank you to everyone who completes the survey, I’d like to offer one free $50 Amazon gift care to one lucky respondent, which will be chosen randomly after the survey cutoff date.