Adaptec 2120S, 2200S Failed segment, Failover, Fault-tolerant arrays, First logical device

Glossary

F

failed

State of a non-redundant array that has suffered a single drive failure, or a a redundant array that has suffered multiple drive failures will be failed and become inaccessible. This will result in data loss.

failed segment

A segment that is no longer usable by an array because it is either logically bad, and therefore no longer needed, or physically damaged.

failover

In a redundant array that has suffered a failure, to automatically reconstruct the missing data onto an assigned hot spare.

fault-tolerant arrays

Refers to an array that can tolerate a disk drive failure without loss or date, and can continue to function. Fault tolerant, or redundant arrays, include RAID 1, 5, 10 and 50 arrays. See also Redundant

first logical device

Device with (virtual) logical device order number 0 (zero). The boot device of the system. Also called first virtual device.

foreign disk

Disk that has previously been initialized on another Adaptec RAID controller. The RAID signature on the disk allows the RAID controller to identify whether the disk was initialized on the controller it is currently connected to or not.

freespace

See available space.

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