The ability of a RAID to have one implemented drive replace a defective drive upon failure. In an array, the hot spare disk automatically takes over the function of a failed drive.
A disk partition reserved for use in a stripe or mirror metadevice; in case an existing partition fails use a hot spare to recover data in place with no downtime and no data loss. See also Disk Suite.
A disk drive that is electrically connected to a CPU system that can take over the operation of a failed disk subsystem. A hot spare is differentiated from a Cold Spare in that a Cold Spare sits on the shelf until a disk drive fails.
A slice reserved to substitute automatically for a failed slice in a submirror or RAID5 metadevice. A hot spare must be a physical slice, not a metadevice.
A hot spare is an extra, unused disk that is part of a disk subsystem. It is assigned as a backup disk that can take over when a primary disk fails. Hot spares remain in standby mode, ready for activation in case of a disk failure. Hot spares can replace failed drives without interrupting the system or requiring user intervention.
An HP RAID 4Si physical disk in a standby state, ready to begin rebuilding a failed physical drive.
an extra, unused disk drive that is part of an array disk subsystem
an unused backup array disk that can be used to rebuild data from a redundant virtual disk
an unused backup disk that is part of the array group
a spare unit that is ready to take on the job of the main unit in the even of failure
a stand by drive assigned to an array or assigned to a group of arrays (global spare)
A stand-by drive ready for use if another drive fails. It does not contain any user data. Up to eight hard drives can be assigned as hot spares for an adapter.
In RAID systems, a spare drive in the disk array that is configured as a backup for rebuilding data in the event another drive fails.
A drive in a RAID configuration that sits idle until one of the RAIDed drives fails. The hot spare then assumes the role of the dead drive. When the dead...
A backup component (e.g., disk or controller) that is online and available should the primary component go down. When a disk crashes, the failure is detected and the array switches to the hot spare, automatically rebuilding data to that drive and using it as a replacement for the failed disk.
A spare hard drive which will automatically be used to replace the failed member of a redundant disk array.
A spare disk drive which, upon failure of a member of a redundant disk array, will automatically be used to replace the failed disk drive.
A drive or drives that resides in a RAID storage system that is used to automatically take over for a non-functioning or failed drive without any operator intervention
A disk being used as a hot standby component.
An idle, powered on, stand-by drive ready for immediate use in case of disk failure. It does not contain any user data. Up to eight disk drives can be assigned as hot spares for an adapter. A hot spare can be dedicated to a single redundant array or it can be part of the global hot-spare pool for all arrays controlled by the adapter. When a disk fails, the controllers' firmware automatically replaces and rebuilds the data from the failed drive to the hot spare. Data can be rebuilt only from logical drives with redundancy (RAID levels 1, 5, 10, or 50; not RAID 0), and the hot spare must have sufficient capacity. The system administrator can replace the failed disk drive and designate the replacement disk drive as a new hot spare.
RAID storage feature that allows a spare drive (or other component) to be configured for automatic (in contrast to hot-swap) replacement and reconstruction in the event of a disk failure. Users can remain on-line and continue to access data.
A hot spare is used as a failover mechanism to provide reliability in system configurations. The hot spare is active and connected as part of a working system. When a key component fails, the hot spare is switched into operation.