Virtual Volumes: VVol Bindings Explained

Virtual Volumes change quite a lot of things. One of these is how your storage volumes are actually connected. This change is necessitated for two reasons:

  • Scale. Traditional ESXi SCSI limits how many SCSI devices can be seen at once. 256 in 6.0 and earlier and 512 in 6.5. This is still not enough when every virtual disk its own volume.
  • Performance. Virtual Volumes are provisioned and de-provisioned and moved and accessed constantly. If every time one of these operations occurred a SC SI rescan was required, we would see rescan storms unlike this world has ever witnessed.

So VMware changed how this is done. Continue reading Virtual Volumes: VVol Bindings Explained

VMworld 2017 Session Wrap-Up

I’m back from VMworld 2017 US and then VMworld Europe and a nice vacation. Time to get back to work and of course some (well a lot hopefully) blogging.

Had a great time catching up with friends at VMworld and talking about the new stuff that both Pure Storage and VMware have coming. I had quite a few sessions this year–VMware was kind enough to post online–many of them publically (no login required).

Continue reading VMworld 2017 Session Wrap-Up