Deleted SnapInfo Snapshot copies
SnapManager for Hyper-V is not maintaining or deleting SnapInfo Snapshot copies.
After creating a dataset backup, SnapManager for Hyper-V creates a Snapshot copy of the SnapInfo LUN. SnapInfo Snapshot copies are not deleted if the backup is deleted. By default, SnapManager for Hyper-V retains 30 SnapInfo LUN Snapshot copies, replacing the oldest copy with the newest copy each time the newest copy exceeds the 30-copy threshold.
You can configure the number of SnapInfo Snapshot copies you want to retain for each Hyper-V host by using one of the following registry keys:
For stand-alone Hyper-V hosts: key:
HKLM\SOFTWARE\NetApp\SnapManager for Hyper-V\Server\<hostname> DWORD value: snapinfo_snaps_count (number of SnapInfo Snapshot copies to be retained)
For clustered Hyper-V hosts (to be configured on each node in the cluster): key:
HKLM\Cluster\SOFTWARE\NetApp\SnapManager for Hyper-V\Server\<clustername> DWORD value: snapinfo_snaps_count (number of SnapInfo Snapshot copies to be retained)