How many hosts are needed to implement SFTT in vSAN Stretched Cluster?

Many of you who are well versed in vSAN will realize that we released a Secondary Failures To Tolerate (SFTT) feature with vSAN 6.6. This meant that not only could we tolerate failures across sites, but that we could also add another layer of redundancy to each copy of the data maintained at each of the data sites. Of course the cross site replication (now [...]

Read more

Heads Up! If running VSA 5.1, you do not need VSA 5.1.1

Folks, This is currently not very clear in the release notes, but if you are already running vSphere Storage Appliance (VSA) version 5.1, you do not need to update to VSA [...]

Why is the siocActiveTimePercentage counter only ever 0% or 100%?

Last week I published a blog article about new performance counters in vSphere 5.1 for monitoring Storage I/O Control (SIOC). Soon after publishing, I received a question [...]

Atlantis ILIO – Diskless VDI & Services Feature Review

My first introduction to Atlantis ILIO was at a User Group meeting in the UK last year. I had a chat with Jim Moyle who explained the Atlantis ILIO product to me. Their [...]

Monitoring Storage I/O Control activity with new vSphere 5.1 counters

There was an interesting question posted recently around how you could monitor Storage I/O Control activity. Basically, how would one know if SIOC had kicked in and was [...]

Tech Preview of EMC’s XtremIO Flash Storage Solution

There is no doubt that Flash is hot right now. Over the past number of months, we have seen IBM acquire Texas Memory Systems (TMS), HDS unveil their own flash strategy and HP [...]

vCloud Director 5.1 & Storage DRS

Another feature which was introduced in vSphere 5.1 & vCloud Director 5.1 was the interoperability between vCloud Director & Storage DRS. Now vCloud Director can use [...]

vCloud Director 5.1 & Storage Profiles

In my 10 part series of posts on the new vSphere 5.1 Storage Features, I called out in part 3 that there was now even greater interoperability between features like Profile [...]