The snap list command lists all the Snapshot copies that exist for the specified LUN.
sdcli snap list [-m MachineName] -d MountPoint
MountPoint is a drive letter, mount point path, volume name, or CSV reparse point for the LUN.
sdcli snap list -d j
The preceding example displays all the Snapshot copies that exist for the volume containing the LUN mapped to “J:” on the local host.