PowerCLI and vVols Part II: Finding vVol UUIDs

One of the great benefits of vVols is that fact that virtual disks are just volumes on your array. So this means if you want to do some data management with your virtual disks, you just need to work directly on the volume that corresponds to it.

The question is what virtual disk corresponds to what volume on what array?

Well some of that question is very array dependent (are you using Pure Storage or something else). But the first steps are always the same. Let’s start there for the good of the order.

Continue reading “PowerCLI and vVols Part II: Finding vVol UUIDs”

VAAI XCOPY not being used with Powered-On Windows VM

This is an issue I discovered along with my good friend and former colleague Drew Tonnesen a few years back which has cropped up a few times in recent days. I noticed there wasn’t really any information about it online, so made sense to put a quick post together.

In short, Windows 2012 R2 virtual machine clone or Storage vMotion operations complete much slower when powered-on as compared to when power-off. The common explanation is that VAAI XCOPY does not work when the VM is powered-on. This is not exactly true. Let me explain. Continue reading “VAAI XCOPY not being used with Powered-On Windows VM”