Apple Mac OS X Server (version 10.2.3 or later) - Manual (Page 612)

612 Chapter 17
When you enable journaling on a disk, a continuous record of changes to files on the disk is
maintained in the journal. If your server stops running because of a power failure or some
other problem, when you restart the server the journal is used to restore the disk 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 computer is much
faster.
You can enable and disable journaling for disks on the server you are logged into by using
Disk Utility or command line tools.
To enable journaling for a disk on a remote server, use the command line tools.
Enabling Journaling Using Disk Utility
You can use the Disk Utility application to convert a disk to a journaled volume, optionally
erasing the disk.
To enable journaling using Disk Utility:
1 Log in to the server whose disk you want to set up for journaling as an administrator.
2 Make sure the server is in a quiescent state.
3 Open Disk Utility. It resides in /Applications/Utilities.
4 Select the disk you want to work with.
5 Select the First Aid tab, then click Verify Disk to make sure it is free from errors before
conducting step 6.
6 To convert a disk to a journaled volume without erasing it, select the Information tab, then
click Make Journaled.
To enable journaling after erasing the disk, first make sure that you have saved any data on
the volume you do not want to be erased. Then, on the Erase tab, choose Mac OS Extended
( Journaled) from the pop-up menu. Type a name for the disk in the Name field, then click
Erase.
Disabling Journaling Using Disk Utility
You can use the Disk Utility application to disable journaling.
To disable journaling using Disk Utility:
1 Log in to the server with the journaling disk as an administrator.
2 Make sure the server is in a quiescent state.
3 Open Disk Utility. It resides in /Applications/Utilities.
4 Select the disk you want to work with.
LL0395.Book Page 612 Wednesday, November 20, 2002 11:44 AM