Hello I'm trying to understand the differences between the snapshot policies included in cDOT 8.3, namely DPDefault and MirrorAllSnapshots. The documentation really isn't clear and apparently I can't see it myself.
The behavior I'm seeing with a DP relationship using the DPDefault policy looks like it mirrors all snapshots and the active filesystem, which the MirrorAllSnapshots policy sounds like it should do. If I delete a snapshot on the source side and do an SM update, the snapshot is gone on the destination side too.
I created a test to try and understand the differences between the policies, but maybe I'm looking at the wrong things because the results of the tests were identical:
- Created testvolA on the source and SM_testvolA on the destination - Created testvolB on the source and SM_testvolB on the destination - Created SnapMirror relationship between testvolA and SM_testvolA with a SM policy of MirrorAllSnapshots - Created SnapMirror relationship between testvolB and SM_testvolB with a SM policy of DPDefault - Created a snapshot on each source volume - Initialized SnapMirror relationships - Examined output of snap list SM_testvol*, identical - Created another snapshot on each source volume - Updated SnapMirror relationships - Examined output of snap list SM_testvol*, identical - Deleted first snapshot on each source volume - Updated SnapMirror relationships - Examined output of snap list SM_testvol*, identical
So, I'm having a difficult time understanding what the point of these policies are. Can someone enlighten me?
Ian Ehrenwald Hachette Book Group, Inc. This may contain confidential material. If you are not an intended recipient, please notify the sender, delete immediately, and understand that no disclosure or reliance on the information herein is permitted. Hachette Book Group may monitor email to and from our network.