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Virtual machines residing on NFS storage become unresponsive during a snapshot removal operation (2010953)


  • During a snapshot removal operation, virtual machines residing on NFS storage become unresponsive.
  • You are using a VADP-enabled backup solution, such as VMware Data Recovery, which uses the hot-add method.
  • When removing snapshots after backing up a virtual machine residing on an NFS datastore using a backup application, the virtual machine becomes unresponsive for approximately 30 seconds.
  • Removing snapshots after backing up a virtual machine residing on an NFS datastore takes a long time to complete.
  • The target virtual machine disk was hot-added for the backup/restore operation.


This is a known issue which occurs when the target virtual machine and the backup appliance reside on two different hosts.


To work around this issue, ensure that the virtual machine resides in the same host where the backup appliance is installed.

: Alternatively, you can use LAN/NBD transport that uses the NFC (Network File Copy) in your backup solution or disable SCSI hot-add through the backup software. For more information about NBD transport, see the Virtual Disk Transport Methods section in the vSphere API/SDK Documentation.

Additional Information

For more information on virtual machine losing connection during snapshot removal, see VM Loses Connection During Snapshot Removal.

Note: The preceding link was correct as of December 18, 2014. If you find the link is broken, please provide feedback and a VMware employee will update the link.  


nfs unresponsive 30 seconds,nfs snapshot

See Also

This Article Replaces


Update History

08/29/2012 - Updated Product Versions to include ESXi 5.0.x 12/12/2012 - Updated Product Versions to include ESXi 5.1.x

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