User`s guide

Glossary ● 175
copyback
Adaptec RAID controller feature that allows data that has been moved to a hot spare to be returned to its
original location once the controller detects that the failed drive has been replaced.
D
DAS
Direct-attached Storage. Data storage that is physically connected to a server. See also LAN, SAN.
dedicated hot spare
A drive that can take the place of a failed drive only on the fault-tolerant array to which it is explicitly
assigned.
degraded array
A redundant array in which one or more members have failed, such that the data remains intact but
redundancy is compromised. The array, and all data, remain accessible but another drive failure will cause
the array to fail, resulting in data loss.
drive segment
See segment.
dual drive failure protection
Another name for a RAID 6 or RAID 60 logical drive.
E
Email Notification Manager
A utility within Adaptec Storage Manager that emails event messages to selected recipients. See also email
notifications, Notification Manager.
email notifications
Event messages about remote systems that are emailed to selected recipients.
event
Activity on your storage space, such as a disk drive failure or logical drive verification.
F
fault tolerance
The ability of a system to continue to perform its functions even when one or more disk drives have failed.
firmware
A combination of hardware and software; software written onto read-only memory (ROM).
format
See initialize.
G
GB
GigaByte. 1,024 MB. See also MB.
global hot spare
A drive that can replace a failed drive in any array on the same controller, provided that the available
capacity is at least equal to that of the failed drive. See also dedicated hot spare.