HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 Service Manual (A5 - Page 391

GLOSSARY adapter A printed circuit assembly that transmits user data (I/Os) between the host system's internal bus and the external Fibre Channel link and vice versa. Also called an I/O adapter, FC adapter, or host bus adapter (HBA). ArrayID The value used to identify a disk array when using Array Manager 60. The ArrayID can be either the disk array S/N, or an alias assigned to the disk array. auto failover The process of transferring the I/O data path from a failed controller to the remaining operational controller in the disk array. Auto failover allows uninterrupted access to all user data with no downtime. The failed controller can be removed, then replaced by a new array controller, without any downtime, loss of data, or interruption to the host computer system. battery backup unit (BBU) A hardware component providing up to 5 days (120 Hours) of backup power to the disk array should power be lost. The BBU power maintains the integrity of the contents of write cache, which is written to the disk media when power to the disk array is restored. A functioning BBU is required to enable disk array cache. BCC module The BCC (bus controller card) module manages the disk modules in the disk systems. Each disk system contains two BCC controllers. 391 Glossary