Glossary
L
legacy disk
Disk that contained a valid partition table when connected to the controller. The controller manages the disk as a legacy disk array where there is a
logical device
Device (disk) comprised of spaces from one or more physical drives and presented to the operating system as if it were one drive.
logical device order
Sequence in which the system’s operating system detects the arrays, single hard disks, and other devices connected to the controller when the server boots.
low-level format
Process performed by the drive firmware that completely cleans any data off the hard disk.
LUN
Logical Unit Number. The number assigned to a subdevice of a SCSI device. Each SCSI device can contain up to eight subdevices numbered 0 through 7. However, most SCSI devices contain only one subdevice (LUN 0).
M
migration
See reconfiguration.
mirror set
See RAID 1.
mirroring; mirrored array
See RAID 1.
