Before creating a mirrored pair, follow these guidelines.
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You must have two storage arrays.
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Each storage array must have two controllers.
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The two storage arrays must be discovered in SAN Manager.
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Each controller in both the primary array and secondary array must have an Ethernet management port configured and must be connected to your network.
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You must know the password for the local and remote storage arrays.
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You must have enough free capacity on the remote storage array to create a secondary volume equal to or greater than the primary volume that you want to mirror.
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Asynchronous mirroring is supported on controllers with Fibre Channel (FC) or iSCSI host ports, while synchronous mirroring is supported only on controllers with FC host ports.