The V-spot

Sometimes the VMware VSS integration and Netapp Snapdrive gives you a hard time.

If you are only interested in snapshotting the vmdk and not the LUNs, you could go for this workaround:

(actually it doesn’t trigger a Netapp Snapshot but tries to gets everything consistent, also the LUN)

AS  VMware pre-freeze script (Unregister ONTAP provider)

navssprv.exe -r service /u

As VMware post-thaw script (Register it back)

navssprv.exe -r service -a user -p password