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VMware Backup on DRS enabeld Cluster is leaving orphanded files behind

  • 4 July 2023
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Hi Team,

we are running SAN Transport Backups agaings a Fully Automated ESXI Cluster.

 

During the long running backup the DRS feature pops in and doing a Storage VMotion against VMs which are currently backed up. Eg VM on DS1 → is storage vmotioned to DS2

 

After the backup we still see all the “Orpahned Files” on DS1. 

 

We tried to utilize the additonal Setting “bDisableVMotionDuringBackup” which did not prevent a Storage VMotion during the backup. 

 

We are currently running 11.30.

If i am not not wrong we saw in ealrier commvault Versions ( 11.28 ) a Taks in the VCenter → VM → Tasks like “DRS disabled” during the backup. 

 

( not sure but maybe with Transport mode “NBD” this issue is not seen )

 

Anyone facing the same issue.

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Best answer by Sebbo 6 July 2023, 12:42

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We managed to add the following setting. As per our assumption this was a default setting prviously 

 

For each VSA proxy, configure the bDisableVMotionDuringBackup setting to disable Storage vMotion during backups:

  1. From the CommCell Browser, go to Client Computers.
  2. Right-click the client for the VSA proxy and select Properties.
  3. On the General tab of the Client Computer Properties dialog, click Advanced.
  4. On the Advanced Client Properties dialog, click the Additional Settings tab.
  5. Click Add.
  6. Add the following entry:
    • Name: bDisableVMotionDuringBackup
    • Category: VirtualServer
    • Type: Boolean
    • Value: true (to disable Storage vMotion during backups)
  7. Click OK to save the additional setting.
  8. Click OK twice more to save the advanced client properties and the client properties.

When bDisableVMotionDuringBackup is set to true, Storage vMotion is disabled while a backup is in progress. The Storage vMotion request can be resubmitted when the backup completes or if the backup job is killed.

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