impacted

An impacted array is one which has been created, but for some reason the initial build

 

operation did not complete. All member drives are present and operational, and all data

 

written to the array is protected. To optimize the array, run a Verify with Fix task.

initialize

Process of preparing a disk for use by the controller. When a disk is initialized, the controller

 

records the RAID signature on the disk.

initialized array

An array that is ready for data reads and writes. Arrays can be initialized by build or clear.

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 one-to-one logical-to-physical

 

mapping of array to disk.

logical device

Volume comprised of space from one or more physical drives and presented to the operating

 

system as if it were a single storage unit.

low-level format

Process performed by the drive firmware that completely removes the file system from the disk.

mirrored

See “RAID 1” on page 18.

array/mirroring

 

monitoring

Process of receiving, displaying, and logging system events.

multipartition array

Array with multiple operating systems or MS-DOS partitions.

offline array

Array that can no longer be accessed.

online capacity

An array feature that enables you to add new array members at any time without losing any

expansion

data.

optimal

The state of an array when it is fully operational. For redundant arrays, the entire array is

 

protected.

partition

Contiguous area of physical drive that makes up some or all of an array. When an array is

 

created, space is automatically converted into partitions.

phantom object

Object that represents a component that cannot be configured by the controller management

 

software; for example, a missing drive.

quick init

An array initialized using the Quick Init option is available immediately, with no on-going

 

background controller activity. All data written to an array that has been quick initialized is

 

protected.

RAID

Redundant Array of Independent Disks (alternative definition: Redundant Array of Inexpensive

 

Disks).

RAID signature

The area on each disk reserved for use by the RAID controller.

RAID volume

Concatenates two or more arrays of the same type.

rebuild

Background regeneration of redundant data on a RAID 1 array.

Glossary 23