Creating copy destination volumes
When creating copy destination volumes for remote copy, note the following:
The type of a copy destination volume must be OPEN. SDV or SDPV can not be used as a copy destination volume for remote copy.
The size of a copy destination volume must be the same as that of copy source volume (the original volume).
To create OPEN volume, use ETERNUS Web GUI/ETERNUS CLI because Express does not offer the feature to create OPEN volumes.
Setting of FC-RA ports
FC-RA (Fibre Channel Remote Adapter) ports are required for REC. Change any FC-CA port to an FC-RA port.
Setting of FC-RA paths
Create a data transmission path by combination of FC-RA ports. This setting is required for all storage systems that perform REC.
Setting of REC buffers
When using the Consistency mode, REC buffers are used. Up to four REC buffers can be set in the ETERNUS DX90. Set the REC buffer size for both data transmission and reception units. You can use a single buffer for unidirectional data transfer only. Therefore, if you use the bidirectional data transfer, you must also set the buffer for reverse directional data transfer.
