User`s guide

58 Chapter 3 Installing Server Software
Important: Don’t store additional software or user data on the hard disk or partition
where the operating system is installed. With this approach, you won’t risk losing those
files if you need to reinstall or upgrade system software. If you must store additional
software or data on the system partition, consider mirroring the drive.
Creating a RAID Set
If the target server has a second physical drive, you can configure the target disk for
RAID mirroring. RAID mirroring sets up two disks so that the second disk is used
automatically if the primary disk isn’t available. Both disks must have a single partition.
To use all your disk capacity, both disks should be the same size.
If the target disk has a single partition and the second physical drive has a single
partition and no data, you can set up RAID mirroring after installation. To prevent data
loss, however, it’s best to set up RAID mirroring as soon as possible.
Erasing a Disk or Partition
You can erase a disk or partition while using the Mac OS X Server Installer. When you
select the target volume in the Installer, you can also select an option to have the
target disk or partition erased during installation using the Mac OS Extended
(Journaled) format. This is the most common format for a Mac OS X Server startup
volume.