HP StorageWorks Application Recovery Manager Administrator's Guide (T4395-96004, February 2008)

Appendix A
Alternate Paths Support
Appendix AA-2
Alternate Paths Support
For systems with multiple host adapters and connections to a disk array,
the alternate paths solution, configured on the backup system, performs
dynamic load balancing and monitors each path to ensure that I/O
completes its transactions. If a path between a disk array and a server
fails, alternate path software automatically switches to an alternate
path, removing the failed path from I/O rotation without data loss.
Switchover is transparent to applications, so they continue unaffected.
The following alternate paths solution is supported:
•HP MPIO DSM