Considerations for setting up asynchronous mirroring

To ensure a successful configuration and set up, keep in mind some key considerations as part of your planning.

Launch SANtricity Unified Manager

  • Each controller in both the primary array and secondary array must have an Ethernet management port configured and must be connected to your network.
  • Asynchronous mirroring is configured by opening SANtricity Unified Manager. Any mirroring relationship requires that both the local and remote storage systems are discovered by and listed in SANtricity Unified Manager.
  • You must have the browser-based SANtricity Unified Manager installed, and have discovered the two storage arrays you want to mirror data between. Then, from Unified Manager, you select the primary volume's storage array and click Launch to open the browser-based SANtricity System Manager.

Activating

Before using asynchronous mirroring, you must activate it on each storage array that participates in mirroring operations. Activation can be done through the CLI, REST API, or management graphical user interface (GUI).

Web services certificates and recommended browsers

Supported connections

Asynchronous mirroring can use either FC or iSCSI connections, or both for communication between local and remote storage systems. At the time of creating a mirror consistency group (also known as asynchronous mirror group), the administrator can select either FC or iSCSI for that group if both are connected to the remote storage array. There is no failover from one channel type to the other.

Asynchronous mirroring uses the storage array’s host-side I/O ports to convey mirrored data from the primary side to the secondary side.