IBM XIV Storage System Copy Services and Migration

Zone or cable the XIV to the non-XIV storage deviceBecause the non-XIV storage device views the XIV as a host, the XIV must connect to thenon-XIV storage system as a SCSI initiator. Therefore, the physical connection from the XIVmust be from initiator ports on the XIV (which by default for Fibre Channel is port 4 on eachactive interface module). The initiator ports on the XIV can be directly attached to the non-XIVstorage (without an intervening switch) or they may be fabric attached (it which case they willneed to be zoned to the non-XIV storage system). Two physical connections from twoseparate modules on two separate fabrics are recommended for redundancy (althoughredundant pathing will not be possible on active/passive controllers).It is also possible that the host may be attached via one medium (such as iSCSI), whereasthe migration occurs via the other (such as Fibre Channel). The host-to-XIV connectionmethod and the data migration connection method are independent of each other.Depending on the non-XIV storage device vendor and device, it may be easier to zone theXIV to the ports where the volumes being migrated are already present. In this manner noreconfiguration of the non-XIV storage device may be required. For example, in EMCSymmetrix/DMX environments, it is easier to zone the fiber adapters (FAs) to the XIV wherethe volumes are already mapped.At the completion of this step you will have:1. Run cables from port 4 on each selected XIV interface module to either a fabric switch ordirectly to the non-XIV storage (if the non-XIV storage has free host ports and it supportsdirect attach).2. Zoned the XIV initiator ports (whose WWPNs end in 3) to the selected non-XIV storagedevice host ports using single initiator zoning (each zone contains one initiator port andone target port).Chapter 7. Data migration 191