Thin Disk Monitoring


If you go down the thin provisioning route, you should must monitor the disk usage. Thin provisioning can lead to oversubscription of physical disk space, that is allocating more disk space that you do really have physically and end up with a corrupted VMDK disk for example!

The following alarm triggers are helpful:

  • Datastore Disk Usage %
  • Datastore Disk Overallocation %

N.B. Swap files, redo logs and linked clones for snapshots DO NOT make use of thin provisioning.

A good reading regarding thin provisioning and performances: Performance Study of VMware vStorage Thin Provisioning

Sources: VMware.com, YellowBricks.com

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About PiroNet

Didier Pironet is an independent blogger and freelancer with +15 years of IT industry experience. Didier is also a former VMware inc. employee where he specialised in Datacenter and Cloud Infrastructure products as well as Infrastructure, Operations and IT Business Management products. Didier is passionate about technologies and he is found to be a creative and a visionary thinker, expressing with passion and excitement, hopefully inspiring and enrolling people to innovation and change.
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