Determining if an array supports automated unmap in vSphere 6.5

Many of you will be aware of the new core storage features that were introduced in vSphere 6.5. If not, you can learn about them in this recently published white paper. Without doubt, the feature that has created the most amount of interest is automated unmap (finally, I hear you say!). Now a few readers have asked about the following comment in the automated unmap section. Automatic UNMAP is not supported on arrays with UNMAP granularity greater than 1MB. Auto UNMAP feature support is footnoted in the VMware Hardware Compatibility Guide (HCL). So where do you find this info in…

Compare and Contrast – VSAN and VVols

Earlier this month I had the opportunity to meet with a number of VMware customers in both Singapore and in the UAE. Most of the sessions were enablement and education type sessions, where there was a lot of white-boarding of VSAN (VMware’s hyper-converged infrastructure product) and Virtual Volumes (VVols – Software Defined Storage or SDS for the storage arrays). This wasn’t a sales session; I’m not in sales. The objective of these sessions was simply to educate. I guess when you are immersed in this stuff 24×7, it easy to fall into the trap of believing that everyone is well…

Heads Up! Misbehaving APD functionality in vSphere 6.0

A very quick “public service announcement” post this morning folks, simply to bring your attention to a new knowledge base article that our support team have published. The issue relates to APD (All Paths Down) which is a condition that can occur when a storage device is removed from an ESXi host in an uncontrolled manner. The issue only affects ESXi 6.0. The bottom line is that even though the paths to the device recover and the device is online, the APD timeout continues to count down and expire, and as a result, the device is placed in APD timeout…

vSphere 6.0 Storage Features Part 5: Virtual Volumes

I pushed this post out a bit as I know that there is a huge amount of information out there around virtual volumes already. This must be one of the most anticipated storage features of all time, with the vast majority of our partners ready to deliver VVol-Ready storage arrays once vSphere 6.0 becomes generally available. We’ve been talking about VVols for some time now. Actually, even I have been talking about it for some time – look at this tech preview that I did way back in 2012 – I mean, it even includes a video! Things have changed…

A closer look at X-IO

My first introduction to X-IO was via Stephen Foskett’s Tech Field Days. They piqued my interest and I added them to the list of storage vendors that I wanted to check out at VMworld 2014. I started to research these guys a little more, and learnt that they are closely related to Xiotech, a SAN company that I dealt with on occasion when I worked in technical support for VMware back in the day. It seems that Xiotech acquired Seagate’s spun-out Advanced Storage Group in 2007. The guys then began to work on a different product to the Xiotech team,…

A closer look at Kaminario

As many of you are aware, I was at VMworld in San Francisco last week. I wrote a number of articles about some VMware storage announcements, such as EVO:RAIL, VAIO and VVols. However there were, as usual, quite a number of storage vendors at this years conference. One of the vendors that I really want to learn more about was Kaminario, an all flash array vendor that I’d heard a lot of things about. I had the pleasure of spending some time at the Kaminario booth with Shai Maskit who is a senior Product Manager with Kaminario. I posed my…

VC Ops Adapters – Storage and Brocade SAN

I’ve been doing a bit of work over the past number of weeks on the adapters for vCenter Operations¬† (vC OPs) with my old pal Paudie. We are working on vCenter Operations 5.8 and using a vSphere 5.5U1 environment. Since we have a Brocade Fibre Channel switch and an EMC VNX array in our lab, I wanted to get the Management Pack for Storage Devices (MPSD) and the Brocade SAN Analytics Management Pack deployed, and see what information we could glean from those extension packs. When we completed the configuration, we were able to go into the vC OPs customs…