Dell PowerStore 7000X EMC PowerStore Release Notes for PowerStore OS Version 1 - Page 16

Limitations Limitations The following limitations exist in this release. PowerStore T and PowerStore X model limitations The following limitations exist in PowerStore T and PowerStore X deployment models. Functional Area Description Importing external storage to PowerStore PowerStore Management access PowerStore scalability limits SCSI Persistent Reservations Support SupportAssist A maximum of 16 import sessions is supported in the Ready-For-Cutover state during an import. In some cases, when several dozen import operations are run back-to-back, intermittent failures of alternate import sessions may occur. If this occurs, do the following: 1. Remove the remote system and then add it again. 2. Run fewer set of imports (16 or less) at a time. It is recommended to start all these import sessions with automatic cutover turned off. 3. Once all imports have reached the Ready-For-Cutover state, do a manual cutover. 4. After one set of imports is completed, run the next set of imports after a delay of 10 minutes. This delay allows enough time for the system to cleanup any connections to the source system. There are some management functions which might be not available through the appliance IP address. This is a known issue and we recommend using only the cluster management IP address for managing the cluster. The PowerStore Simple Support Matrix lists the scalability limitations in PowerStore models. The PowerStore Simple Support Matrix is available from the Dell E-Lab Navigator at: https://elabnavigator.emc.com/eln/elnhome SCSI-2 clusters are not supported. Only the following SCSI-3 persistent reservation (PR) clusters are supported: • SCSI-3 PR is supported for single appliance PowerStore clusters, both for PowerStore T model and PowerStore X model appliance types. • In a PowerStore T model cluster with more than one appliance, SCSI-3 PR is supported. However, internal migration of vVols between appliances in a cluster is only supported for vVols without SCSI-3 PR when you are running VMware vSphere 6.7 P02 or later. Support for internal migration of vVols with SCSI-3 PR may be available in a future VMware vSphere release. Note: In this release, a PowerStore X model cluster can contain only one appliance. SupportAssist cannot be enabled on PowerStore models configured with IPv6 for the management network. SupportAssist is not supported over IPv6. 16 Dell EMC PowerStore Release Notes