HP A3550A User Guide - Page 117

Failing component Disk module Continue after failure? Yes (9.04) Yes (10.x) SP *No (9.04) *Yes (10.x) Fan pack Power supply Yes (9.04) Yes (10.x) Yes (9.04) Yes (10.x) SCSI-2 adapter/ *No (9.04) cable Yes (10.x) What happens and how to recover Applications continue running. System Administrator or service provider replaces module. Provides the same features as the basic configuration, but with better performance and higher availability. Applications can continue to run after the failure of a single disk module. HP-UX 9.04 If an SP fails, the System Administrator must use Grid Manager to reassign ownership of the failed SP's LUNs to the operational SP. Also, the path to the operational SP must be used and can be changed by way of LVM. Once these changes have been made, access to all LUNs on the array is possible. HP-UX 10.x If one SP fails, ownership of the failed SP's LUNs can transfer automatically to the remaining operational SP. If a primary and an alternate path have been configured in LVM, LVM automatically switches to the alternate path. These operations are transparent to the user. 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. HP-UX 9.04 If the adapter/cable fails, the System Administrator must access the array through the operational SCSI-2 adapter's path. LUN ownership and path changes need to be made using Grid Manager and LVM, respectively. HP-UX 10.x If the adapter/cable fails, LUN ownership transfers and LVM switches to the alternate path automatically and transparently. 4-10