HP StorageWorks 4000/6000/8000 .HP StorageWorks SAN Design Reference Guide, Pa - Page 336

XP Continuous Access is supported using the Fibre Channel protocol or ESCON protocol. Current XP storage systems support replication using Fibre Channel. Legacy XP storage systems use either Fibre Channel or ESCON. Data replication between different storage systems is supported only if they use the same protocol. Table 166 describes the supported protocol and storage system source-target combinations. Table 166 XP Continuous Access protocols and source-target replication pairing1 XP24000 nl XP20000 XP12000 nl XP10000 XP1024 nl XP128 XP512 nl XP48 XP storage nl system Protocol Fibre nl Channel Fibre nl Channel Fibre nl Channel ESCON Fibre nl Channel ESCON XP24000 Fibre XP20000 nl • • • - - - Channel XP12000 Fibre XP10000 nl • • • - • - Channel XP1024 Fibre XP128 nl • • • - • - Channel ESCON - - - • - • XP512 Fibre XP48 nl - • • - • - Channel ESCON - - - • - • 1Legend: • = supported; - = not supported When performing replication between two storage systems, the following restrictions apply: • Legacy storage systems have limitations on the control-unit range, port numbers, and LUNs. • Support for "host group" is limited by storage system functionality. This also affects the internal addressing of devices allocated to host ports and the configuration of RAID Manager. • The emulation mode and the device (volume) size must be the same on both storage systems. • There are firmware requirements for replication between different XP storage systems. (See Table 165 for firmware versions.) XP Continuous Access Synchronous Table 167 describes the network requirements and configuration rules when using XP Continuous Access Synchronous replication. 336 SAN extension