Apple Mac OS X Server (Administrator’s Guide) - Manual (Page 557)

Tools for Advanced Users 557
m By default, two predefined action scripts are executed when the thresholds are reached.
The default alert script is /etc/diskspacemonitor/action/alert. It runs in accord with
instructions in configuration file /etc/diskspacemonitor/alert.conf. It sends email to
recipients you specify.
The default recovery script is /etc/diskspacemonitor/action/recover. It runs in accord with
instructions in configuration file /etc/diskspacemonitor/recover.conf.
See the comments in the script and configuration files for more information about these
files.
m If you want to provide your own alert and recovery scripts, you can. Put your alert
script in /etc/diskspacemonitor/action/alert.local and your recovery script in
/etc/diskspacemonitor/action/recovery.local. Your scripts will be executed before
the default scripts when the thresholds are reached.
To configure the scripts on a server from a remote Mac OS X computer, open a Terminal
window and log in to the remote server using SSH.
diskutil
This Mac OS X tool is especially useful in a server environment, because it offers a wide
variety of commands for managing and repairing disks. For example:
m To list the disks and partitions on the Mac OS X computer you are logged into, type
“diskutil list” in a Terminal window.
m To create a Redundant Array of Independent Disks (RAID) set on multiple disks, type
“sudo diskutil createRAID mirror MirrorDisk BootableHFS+ disk1 disk2”. Root access
is required.
m To verify the disk structure of a volume, type “sudo diskutil verifyDisk /Volumes/
SomeDisk”. To repair the disk structure, type “sudo diskutil repairDisk /Volumes/
SomeDisk”. Root access is required.
m To verify permissions of a Mac OS X boot volume, type “sudo diskutil verifyPermissions / ”.
Root access is required.
Type “man diskutil” in a Terminal window for complete information about this command.
To run diskutil on a Mac OS X computer from a remote Mac OS X computer, open a Terminal
window and log in to the remote computer using SSH.