HP A3550A User Guide - Page 131

Failing component Disk module Continue after failure? What happens and how to recover Yes With RAID of any level supported by MPE/iX, applications continue running. System Administrator or service provider replaces module. SP No Fan pack Yes Power supply Yes SCSI-2 adapter/ No* cable Provides the same features as the basic configuration, but with better performance and higher availability. With RAID of any supported level, applications can continue to run after the failure of a single disk module. If one SP fails, the System Administrator must reassign ownership of the failed SP's LUNs to the operational SP by using Grid Manager. Also, the path to the operational SP must be used and can be changed by using SYSGEN or ioconfig. Once these changes have been made, access to all LUNs on the array within the SCSI LUN limits is possible. 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. If the adapter/cable fails, I/O operations to array disk units fail. Authorized service provider replaces adapter or cable and System Administrator restarts operating system and applications. If the SCSI-2 adapter fails, no I/O operations are possible between the host and the array. 5-8