UNMAP

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 [...]

vSphere 6.5 Core Storage White Paper Now Available

I'm delighted to announce the availability of a new vSphere 6.5 core storage white paper. The paper covers new features such as VMFS-6 enhancements, policy [...]

vSphere 6.0 Storage Features Part 8: VAAI UNMAP changes

A few weeks, my good pal Cody Hosterman over at Pure Storage was experimenting with VAAI and discovered that he could successfully UNMAP blocks (reclaim) [...]

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 [...]

Heads Up! VAAI UNMAP issues on EMC VMAX

We just got notification about a potential issue with the VAAI UNMAP primitive when used on EMC VMAX storage systems with Enginuity version 5876.159.102 or [...]

vSphere 5.5 Storage Enhancements Part 4: UNMAP

Continuing on the series of vSphere 5.5 Storage Enhancements, we now come to a feature that is close to many people's hearts. The vSphere Storage API for Array [...]

vSphere 5.1 Storage Enhancements – Part 2: SE Sparse Disks

This is possibly the most exciting new storage feature in the vSphere 5.1 release. Space Efficient Sparse Virtual Disks (or SE Sparse Disks for short) were [...]