Today I was fooling around with my new Lab environment when I noticed my Path Selection Policy (PSP) was set to fixed while the array (Clariion CX4-120) most definitely supports Round Robin (RR). I wrote about it in the past(1, 2) but as with vSphere 4.1 the commands slightly changed I figured it wouldn’t hurt to write it down again: [...]

I was asked why Data Recovery was only running one single job at a time instead of multiple concurrent. After some investigations I found out that the administrator changed the configured memory for the appliance to 8Gb where 2Gb is the default. The Knowledge base article clearly states the following about this: This issue may occur if the configuration of [...]

Yes not only Chad Sakac deals with face melting ultra uber geeky cool stuff I do as well (those on twitter know what I am referring to), but unfortunately I cannot share the details on some of the stuff I am working on. I can however provide you a link which contains the papers written by  the engineers on some [...]

I was reading an article by one of my Tech Marketing colleagues, Kyle Gleed and coincidentally Gabe published an article about the same topic to which Frank replied and just now Forbes Guthrie… the topic being Large Pages. I have written about this topic many times in the past and both Kyle, Gabe, Forbes and Frank mentioned the possible impact [...]

This week I received an email from one of my readers about some weird Storage IO Control behavior in their environment.  On a regular basis he would receive an error stating that an “external I/O workload has been detected on shared datastore running Storage I/O Control (SIOC) for congestion management”. He did a quick scan of his complete environment and [...]

It is that time of the year again… Roughly 1 year ago I blogged about the fact that I joined the VMware Cloud Practice, today I want to let you guys know that I have accepted a new job role within VMware as a Principal Architect working for the Technical Marketing team. While I have enjoyed working within the PSO/TS [...]

I received a very good question this week to which I did not have the answer, I had a feeling but that is not enough. The question was if Storage vMotion would be “throttled” by Storage IO Control. As I happened to have a couple of meetings scheduled this week with the actual engineers I asked the question and this [...]