Dell Adaptec U320 SCSI Raid 0 or 1 Controller Card User Manual

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signature on the disk.

initialized array

An array that is ready for data reads and writes.

L

logical device

A read/write resource, such as an array or spare, that does not exist until configured by the Software Management tool.

Logical Unit Number

See

LUN

.

low-level format

Process performed by the drive firmware that completely removes the file system from the disk.

LUN

Stands for Logical Unit Number. The number assigned to a subdevice (logical unit) of a SCSI target. Each SCSI target
can contain up to eight subdevices numbered 0 through 7; however, most SCSI devices contain only one subdevice
(LUN 0).

M

mirroring; mirrored array

Synonym for RAID 1. Full redundancy is obtained by maintaining identical copies of data on two or more hard disks.
Mirroring provides fault tolerance with a minor performance penalty.

monitoring

The process of receiving, displaying, and logging system events.

O

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