# Considerations for the HPE Alletra Storage MP / Primera / HPE Alletra 9000 Series / HPE Alletra Storage MP B10000 Storage Array

Before using the IntelliSnap feature for this storage array, read the following limitations and special conditions.

- You cannot run clone operations on the following versions: 3.1.2(MU1), 3.2.2, and 3.3.1.460 (MU3)+P49, P50.

- Not supported with 3.1.1.342 , 3.1.1 (MU1) + Patch 10, 3.1.1 (MU2), 3.1.1(MU3), and 3.1.3 (MU1)

- In version 3.3.1 GA and more recent versions, because of a limitation on the array, you might not be able to delete aged snapshots with child snapshots.

- You cannot use the revert operation with HPE 3PAR StoreServ Clone.

- You cannot use the revert operation with RDM.

- Starting Innovation Release 11.42, the revert operation is supported for the volume part of the virtual volume set or volume mapped to host sets, only with the HPE Alletra Storage MP Snap engine. For all other engines, the revert operation is not supported for the volume part of the virtual volume set or volume mapped to host sets.

- The revert operation is not supported on version 3.3.1.

- Revert operations are not supported for the HPE Alletra Storage MP Snap engine if the primary volume is part of replication and the Remote Copy Group is in Started state, i.e., replication is active.

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