HP StorageWorks P9000 Cluster Extension Software Administrator Guide (TB534-96009, February 2011)

This ensures that the disk array cache can be transferred from the remote disk array, even in
the event of a single surviving replication link between the disk arrays.
NOTE: Because the failover environment is dispersed over two or more data centers, the failover
time cannot be expected to be the same as that of a single data center with a single shared disk
device. Therefore, you must adjust the service or resource group startup timeout value and the
monitor interval of the RAID Manager device/copy group based on failover tests you perform to
verify the proper configuration setup.
Timing considerations 69