Adaptec 29320A-R User Guide - Page 195

Adaptec Ultra320 SCSI Cards User's Guide check point A feature that enables you to exit the SCSISelect utility when an operation is in progress and be able to continue without interruption. The driver then resumes the operation from where the BIOS left off and the BIOS resumes the operation where the driver left off. critical array An array that is still operational, but is no longer maintaining redundant data. D discovery The process by which information about a system or subsystem is obtained. disk See hard disk. disk ID Consists of the bus number, SCSI ID, and LUN, for example, 1:04:0. See also bus; LUN; SCSI ID. drive light An indicator light on a disk that illuminates during read or write operations. E enclosure A physical housing for hard disks, which can be connected internally or externally to a computer. An enclosure usually contains one or more power supplies, fans, and temperature sensors. enclosure ID Consists of the bus number, SCSI ID, and LUN, for example, 1:04:0. See also bus; LUN; SCSI ID. enclosure management device See enclosure. Glossary-2