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SnapCenter clone operations fail with error "Could not find any available unit numbers to add the disk to"

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Category:
snapcenter
Specialty:
SNAPX
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Applies to

All SnapCenter plugins

Issue

  • SnapCenter clone operations fail to mount a virtual disk (VMDK or RDM LUN) with error, "Could not find any available unit numbers to add the disk to".
    • The vmcontrol.log on the SCV appliance shows the below error 
      • Failed to mount/Attach Disk: - Could not find any available unit numbers to add the disk to XXXXXXXXX.
    • SMCore log on server where the clone is being mounted on logs similar to the following(C:\Program Files\NetApp\SnapCenter\SMCore\log\SMCore_xxx.log):
      • Activity name: Virtual Resources Clone: -1 - Failed to Mount/Attach Disk:- Could not find any available unit numbers to add the disk to <SERVER NAME>

 

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