Apple Xserve RAID: Using RAID 1.2 Admin and Disk Utility Manuel d'utilisateur télécharger pdf (Page 23)

Chapter 2 Working With RAID Arrays 23

6 Choose a format for the array.

Note: You can take advantage of disk journaling by using the journaled volume format

in Mac OS X Server. Journaling is a technique that helps protect the integrity of HFS+

disks in RAID arrays. It limits the exposure for data loss and expedites repair if the

volume gets into an inconsistent state.

When you enable journaling on an array, a continuous record of changes to files on the

volume is maintained in the journal. If your system stops running because of a power

failure or some other problem, when you restart the system the journal is used to

restore the volume to a known good state. Although you may experience loss of user

data that was buffered at the time of the failure, the file system is returned to a

consistent state. In addition, restarting the system is much faster.

You can also turn journaling on or off for a volume at any time in the Information

section of Disk Utility.

7 Click Create.

Once you’ve created your RAID arrays, you can use RAID Admin to monitor the Xserve

RAID system.

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Apple Xserve RAID: Using RAID 1.2 Admin and Disk Utility Manuel d'utilisateur Page 23