Specifications

Chapter 7 Working with Disks and Volumes 97
Managing RAID Volumes
In addition to standard drive management options, you can use diskutil to manage
software RAID volumes.
To create a RAID set:
$ diskutil createRAID type setName volType disks
To get a list of disks available to add to a RAID set:
$ diskutil list
Similarly, you can remove a RAID set with the diskutil destroyRAID command.
To view a list of available RAID sets:
$ diskutil checkRAID device
To create an unpaired mirrored RAID set from a single file system disk:
$ diskutil enableRAID mirror device
To repair a failed mirror:
$ diskutil repairMirror device slicenumber fromDisk toDisk
Note: Xsan RAID volumes have their own commands, described in an appendix of the
Xsan Administrators guide. For information about the
megaraid tool (used for
managing a PCI RAID card), see the appendix.
Parameter Description
type Mirror or stripe
setName Name of the new RAID volume
volType HFS, HFS+, UFS, or BootableHFS
disks List of device names for members of the RAID set
Parameter Description
device Device file
Parameter Description
mirror Name of the mirror RAID set
device Device file
Parameter Description
device Device file
slicenumber The slice number to replace
fromDisk The mirror source
toDisk The repaired mirror destination