How to monitor VM snapshot usage on Nutanix Acropolis


Virtual Machine snapshot is an excellent feature which helps quickly rollback changes if something goes wrong. However, many users or Admins are using snapshots as “backups”. Basically, they create a snapshot and forget to delete it. Users are not the only one “guilty” here, backup systems leveraging hosts based snapshots mechanism are very common suspect of huge snapshots. Obviously, snapshot size is growing with time to abnormal sizes, consuming precious disk space form the storage system. I have seen VMware vSphere snapshots up to 500GB for on virtual machines running Microsoft exchange or databases. Imagine how long does it take to delete it and how dangerous it is?

How to create VM snapshot usage alert on Nutanix Acropolis

  • PRISM Central –> Alert –> Configure –> Alert policy
  • From the new window, click on New alert policy.
  • In new alert policy configuration window provide the following
    • Entity type: VM
    • Entity: All VMs (this option covers all VMs in all clusters connected to Prism Central
    • Metric: Snapshot usage

Impact type: Capacity

VM snapshot usage alert in Nutanix Acropolis

After saving changes, under User Created filter, a new policy will appear.

Custom snapshot usage monitoring policy

VM snapshot usage in Nutanix Acropolis

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Artur Krzywdzinski

Artur is Consulting Architect at Nutanix. He has been using, designing and deploying VMware based solutions since 2005 and Microsoft since 2012. He specialize in designing and implementing private and hybrid cloud solution based on VMware and Microsoft software stacks, datacenter migrations and transformation, disaster avoidance. Artur holds VMware Certified Design Expert certification (VCDX #077).

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