This week I received a question about Storage DRS. The question was if it was possible to have a VM with multiple disks in different datastore clusters? It’s not uncommon to have set ups like these so I figured it would be smart to document it. The answer is yes that is supported. You can create a virtual machine with [...]

I just read Eric’s article about all the topics he covered around vSphere 5 over the last couple of weeks and as I just published the last article I had prepared I figured it would make sense to post something similar. (Great job by  the way Eric, I always enjoy reading your articles and watching your videos!) Although I did [...]

A couple of weeks ago I wrote an article about Storage DRS (hereafter SDRS) interoperability and I mentioned that using SDRS with Auto-Tiering solutions should work… Now the truth is slightly different, however as I noticed some people  started throwing huge exclamation marks around SDRS I wanted to make a statement. Many have discussed this and made comments around why [...]

I received a question last week about higher latency thresholds for vMotion… A rumor was floating around that vMotion would support RTT latency up to 10 miliseconds instead of 5. (RTT=Round Trip Time) Well this is partially true. With vSphere 5.0 Enterprise Plus this is true. With any of the versions below Enterprise Plus the supported limit is 5 miliseconds [...]

I just wanted to point out a couple of changes for HA in vSphere 5.0 with regards to admission control. Although they might seem minor they are important to keep in mind when redesigning your environment. Lets just discuss each of the admission control policies and list the changes underneath. Host failures cluster tolerates Still uses the slot algorithm. Major [...]

We need your help for our VMworld session “VSP1682 – vSphere Clustering Q&A”. In order to ensure we can fill up the full 60 minutes we want to have a couple of questions ready in case no one in the audience has a question. Although I doubt that will be the case, it is better to be prepared than to [...]