We have been experiencing checkpoint backup failures for VMs on Hyper-V Failover cluster. The CSVFS volume is having 30% free space. How much is the free space needed for the VSA backups to complete for Microsoft Hyper-V Virtual machines. In VMware it is recommended to keep 10% free space on the datastore.
Question
Hyper-V VM backups CSVFS Volume free space
+3
- Vaulter
Hi
Good day!
There isn’t a strict free-space requirement from Commvault for Hyper-V CSVs. The volume just needs enough room to hold the checkpoints created for all VMs during the backup. In most cases, having around 30% free space is perfectly fine, but the actual need can vary depending on how much VM's we are running backup together
Please check with your Microsoft/Hyper-V team to see if the CSV is running low on space during the backup window.
If they notice any space pressure, you can either increase the free space on the CSV or spread out the VM backups so they don’t all run at the same time.
Regards.
Sureshkumar S
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