HP A3550A User Guide - Page 119

Failing component Disk module SP Continue after failure? What happens and how to recover Yes (9.04) Yes (10.x) Provides the same features as the basic configuration, but with better performance and higher availability. Applications continue running. System Administrator or service provider replaces module. *No (9.04) Yes (10.x) If one SP fails, the System Administrator can access the LUNs owned by the failed SP by accessing the remaining operational SP with the other host. If a host adapter fails, the System Administrator can access the LUNs in the array with the other host adapter. The System Administrator must change the path and the SP ownership of the LUNs for the failed SP or failed host adapter by using LVM and Grid Manager, respectively. Fan pack Power supply Yes (9.04) Yes (10.x) Yes (9.04) Yes (10.x) SCSI-2 adapter/ *No (9.04) cable *No (10.x) HP-UX 10.x There is no automatic transfer of LUN ownership or path for this configuration type. Applications continue running. System Administrator or service provider replaces module. If a redundant power supply module is present, applications continue running; otherwise, disk array fails. Service provider replaces power supply. The System Administrator restarts the operating system if necessary. I/O operations fail to all physical disk units configured on SP attached to a failed SCSI-2 adapter/cable. The System Administrator can transfer control to the other SP and adapter by changing host(s) and array configuration. 4-12