Home > Storage > PowerStore > Virtualization and Cloud > Dell PowerStore: VMware Site Recovery Manager Best Practices > Array manager device discovery
Whenever a new replicated datastore or RDM is added to the environment, the arrays should be rescanned within SRM for new devices. The array pair device discovery tool is located in the Array Based Replication > Array Pairs menu. Run the device discovery on both arrays to ensure a consistent list of devices. Non-replicated volumes are not discovered and displayed as eligible devices in SRM. Keep this in mind as a troubleshooting tip if datastores or RDMs are not listed as eligible devices in SRM. Conversely, SRM discovers all replicated volumes as devices, even vSphere does not use them. For example, replicated volumes could belong to other storage hosts such as physical Microsoft Exchange, SQL Server, Oracle, and file servers.
Select Discover Devices, as shown in the following figure, to invoke an SRA query of PowerStore to obtain the newest array-based replicated device information.