deep dive

VSAN 6.0 Part 6 – Maintenance Mode Changes

There is a subtle difference in maintenance mode behaviours between VSAN version 5.5 and VSAN version 6.0. In Virtual SAN version 5.5, when a host is placed [...]

VSAN 6.0 Part 5 – new vsanSparse snapshots

There is a new snapshot format introduced in VSAN 6.0 called vsanSparse. These replace the traditional vmfsSparse format (redo logs). The vmfsSparse format was [...]

Migrations and Virtual Volumes – Deep Dive

Recently I published an article on Virtual Volumes (VVols) where I touched on a comparison between how migrations typically worked with VAAI and how they now [...]

VSAN Troubleshooting Case Study

I have been doing a bunch of stuff around disaster recovery (DR) recently, and my storage of choice at both the production site and the recovery site has been [...]

Some useful NSX Troubleshooting Tips

I've been working on some Disaster Recovery (DR) scenarios recently with my good pal Paudie. Last month we looked at how we might be able to protect vCenter [...]

VAAI UNMAP Performance Considerations

I was involved in some conversations recently on how the VAAI UNMAP command behaved, and what were the characteristics which affected its performance. For [...]

Where to look when troubleshooting VDPA backup issues

I had the pleasure (?) recently of troubleshooting some backup issues on my vSphere Data Protection Advanced (VDPA) setup. To be honest, I had not spent a [...]