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Glossary 23
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
array/mirroring
See “RAID 1” on page 18.
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
expansion
An array feature that enables you to add new array members at any time without losing any
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.