User Guide

53987 Rev. 3.01 June 2016
AMD-RAIDXpert2 User Guide
Chapter 3
Arrays, Disks and RAID Levels
25
Table 6. RAID Levels – General Characteristics (Continued)
RAID Level
Main Characteristic
Use/Usefulness
RAID10 (Striped
RAID1 Sets)
 Combines mirrors and stripe sets.
RAID10 allows multiple disk
failures, up to 1 failure in each
mirror that has been striped.
 Supports 4, 6, or 8 disks.
Offers better performance than a
simple mirror because of the extra
disks.
Requires twice the disk space of
RAID1 to offer redundancy.
Volume (JBOD)
 RAIDXpert2 treats one or more
disks or the unused space on a
disk as a single array.
 Supports 1 to 8 disks
Provides the ability to link-together
storage from one or several disks,
regardless of the size of the space on
those disks.
Useful in scavenging space on disks
unused by other disks in the array.
Does not provide performance benefits
or data redundancy. Disk failure will
result in data loss.
RAIDABLE (also
known as RAID
Ready)
 Allows a RAIDABLE disk to be
transformed later to RAID0 or
RAID1.
 Supports one disk.
See RAID0 (Striping), on page 24 or
RAID1 (Mirroring) on page 24 for
post-transformation usefulness.
3.3 Array States
Within the management applications, an array is a logical device that can exist in one of four
states: Normal, Ready, Critical, or Offline.
 In RAIDXpert2, these states display in the Array List section in a column named State.
 Within the rcadm Command Line tool, these states also display in a column named State.
The array states are defined in Table 7, on page 26.