Scale-Out

A closer look at Datrium

Datrium are a new storage company who only recently came out of stealth. They are one of the companies that I really wanted to catch up with at VMworld 2015. [...]

SAS Expander support on Virtual SAN

This question has come up on a number of occasions in the past. It usually comes up when there is a question about scalability and the number of disk drives [...]

The value of Virtual Volumes (VVols)

Regular readers will know that I normally blog about the technical aspects of storage, as opposed to doing opinion pieces. However there have been a number of [...]

VSAN 6.0 Part 9 – Proactive Re-balance

This is another nice new feature of Virtual SAN 6.0. It basically is a directive to VSAN to start re-balancing components belonging to virtual machine objects [...]

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 [...]

VSAN 6.0 Part 4 – All-Flash VSAN Capacity Tier Considerations

In Virtual SAN version 6.0, VMware introduced support for an all-flash VSAN. In other words, both the caching layer and the capacity layer could be made up of [...]