MSI MS-9246 Cache, Capacity, Channel, Chunk, Clear, Concatenation, Consistency check command

MS-9246 1U Rackmount Server

C

cache

Fast-access memory on the controller that serves as intermediate storage for data that is read from, or written to, drives.

capacity

Total usable space available in megabytes or gigabytes.

channel

Any path, or bus, used for the transfer of data and the control of information be- tween storage devices and a RAID controller. For Serial ATA channels, each channel has a single drive capacity.

chunk

See stripe.

clear

Foreground initialization of a fault-tolerant array. A clear operation zeros all blocks of the array. The array is not accessible until the clear task is complete.

concatenation

Joining of physical or logical drives in sequential order.

consistency check command

Command that reads all the blocks of a RAID 1 to determine if the blocks are consistent. Any inconsistent blocks are fixed.

D

dead partition

See failed.

dedicated hot spare

Component that can take the place of a failed component only on the fault-tolerant array to which it is explicitly assigned.

degraded

A redundant (for example, a RAID 1) array in which one or more members have failed. The data is intact but redundancy has been compromised. Any further failure would cause the array to fail and result in data loss.

disk

Physical disk drive. Randomly accessible, re-writable data storage device. Also called hard disk.

disk ID

Unique disk identifier that consists of the channel number, SATA ID. For example, (channel:ID:LUN) 1:04:0. See also channel.

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