When configuring physical paths to connect the storage systems at the primary and secondary sites, make sure that the paths can handle all of the data that could be transferred to the primary and secondary volumes under all circumstances.
When you plan physical paths, keep in mind the required bandwidth, Fibre Channel or iSCSI data path requirements, and whether you plan a direct connection, a connection using switches, or a connection using channel extenders.
You can use the same protocol for data paths between a host and a storage system and between primary and secondary storage systems. When different protocols are used in the data paths (for example, iSCSI data paths between the host and storage system and Fibre Channel data paths between the storage systems), make sure the timeout period for commands between the host and the storage system is equal to or greater than the timeout period for commands between the storage systems.
VSP One B85 supports connection between primary and secondary storage systems on the following physical path interfaces:
- 32-Gbps Fibre Channel (Fibre Channel Board 32GB V2 and Fibre Channel Board 64GB V2 are not supported.)
- 25-Gbps iSCSI (DKCMAIN version A0-05-41 or later)
(10GBASE-T SFP can be mounted on a 25-Gbps Ethernet channel board. The link-up speed is 10 Gbps.)
VSP One B20 series supports connection between primary and secondary storage systems on the following physical path interfaces:
- 32-Gbps Fibre Channel
- 64-Gbps Fibre Channel
- 10-Gbps iSCSI
- 25-Gbps iSCSI (DKCMAIN version A3-04-2x or later)