Dell Adaptec U320 SCSI Raid 0 or 1 Controller Card - Manual (Page 48)

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 .
event
A notification or alert from the system indicating that a change has occurred.
event log
A file used to maintain information about prior controller activities or errors.
event notification
The means used by the system to communicate information about event occurrence.
F
failed
State of a nonredundant array that has suffered a single drive failure, or a redundant array that has suffered multiple
drive failures. A failed array is inaccessible and data is lost.
failover drive
See hot spare .
fault tolerance