HP High Availability Disk Array 10/20 User Guide - Page 249

Menu item Update Option Controller Firmware Disk Firmware Property Description Download, update PROM and restart controllers Downloads microcode to the SCSI disk array's database drives, burns PROM code contained in the download file into the SP's PROMs, and restarts the SP using the new microcode. Download and restart controllers Downloads microcode to the SCSI disk array's database drives; restarts the SP using the new microcode. Download only Restart controllers only N/A Downloads microcode to the SCSI disk array's database drives, but does not take effect until the SPs are restarted (with a Restart Controllers only command, or by power cycling the SCSI disk array). Restarts the SPs, using microcode residing on the database drives. Supplies firmware to all compatible disk modules within the SCSI disk array (that is, those with the same product ID). This applies even to disk modules owned by another SP. The firmware then resides permanently within those disk modules until another disk module firmware update is performed. 7-48