1. SSH as ADMIN onto the device you are replicating to.
2. SU to root permissions, but don't enter nmc. Your path should read something like root@devicename:/export/home/admin#
3. Run the command;
zfs list -t snapshotThis will list all snapshots on the device. The more snaps you have, the longer this will take so go make a cup of tea while it is running.
4. Find the name of the snap you wish to remove and run the command;
zfs destroy snapnameYou can also remove snapshots through the Nexenta GUI by navigating to Data Management > Data Sets > Snapshots