Dell PowerStore 1000T EMC PowerStore Release Notes for PowerStore OS Version 1 - Page 6

Issue ID MDT-148947 MDT-146780 MDT-117061 MDT-137439 Functional Area Description Workaround/Resolution Data Protection From a protection perspective, a snapshot of a volume group is a single-point-in-time copy of the volume group member volumes. Membership changes to the volume group prevent snapshot recovery operations, such as restore or refresh, unless the volume group is returned to the same membership state at the time the snapshot was created. It is recommended that you do not delete the volumes removed from a volume group until all the snapshots of the volume group either expire or are removed manually. If there are still volume group snapshots, the delete request for the volume returns the following error: "The Volume (id: ) cannot be deleted until all volume group snapshots taken when this volume was a member of a volume group expire or are manually deleted." This error does not indicate the name of the volume group that is needed to delete the volume group snapshots so the volume deletion can succeed. In PowerStore, first identify the volume group name, if it is unknown, by navigating to Snapshots table of the removed member volume. Volume group snapshots that have been created by a protection policy should have the volume group name as part of the system-created snapshot name for each member volume. If there are only manual snapshots, you can use REST API to identify the volume group name. The volume group snapshots can be deleted by navigating to the protection tab and viewing the snapshots for the specific volume group. Click Show/Hide Table Columns and add the Volume Members column. The column appears and displays a number. When you hover over that number, the volumes within the VG snapshot become visible. You can look for a pattern by sorting this column. A column with more members might indicate that the VG snapshot has the member that is preventing the volume deletion operation, assuming one or more members have been removed and snapshots continued to be created on the remaining VG members. Data Protection When deleting a snapshot rule, the snapshot rule may not appear to be deleted, and the following error appears: "The system encountered unexpected backend errors. Please contact support. (0xE0101001000C)". Do not continue using the rule for protection. Delete the snapshot rule again. The same error appears, but the rule will be deleted. Hardware When beginning cluster creation, the Wait a few minutes and try again. hardware status is incorrectly indicated as not configured for clustering. Import If an import from a Unity or VNX2 system to PowerStore is cancelled by the user or fails for some reason, it is possible that subsequent attempts to import the volume will also fail. Remove the Unity or VNX2 as a remote system and then add it again. This action will clear the issue and allow the import to proceed. 6 Known Issues