3Com SuperStack 3 NBX, Administrator'S Manual

Page: 343 / 496

Disk Mirroring 343
Adding a Mirror Disk If your system uses a single disk, you can add a mirror disk. The disk you
add must have at least the same storage capacity as the disk in the
system. You must obtain a disk mirroring license to convert a single-disk
system to use disk mirroring. You need a Phillips screwdriver to complete
this process.
CAUTION: Adding a mirror disk involves a system database backup and a
system shutdown. 3Com advises that you add a mirror disk only during
non-business hours.
To add a mirror disk:
1 Back up the database on the system.
a Select Operations > Manage Data.
b Click Backup and specify a location for the backup file.
2 Install the disk mirroring license.
a Obtain the license key from your dealer.
b Select Operations > Licenses > Add License.
c Type the license key in the two license key fields.
d Click OK .
3 Shut down the system by selecting Operations > Reboot/Shutdown >
Shutdown.
4 Install the second disk drive.
a Unlock the disk tray.
b Unscrew the two retaining screws.
c Remove the disk tray.
d Connect the IDE disk cable to the disk drive.
e Connect the power harness to the disk drive.
f Fasten the new disk to the disk tray using your Phillips screwdriver and
the screws provided with the disk.
g Reinsert the disk tray.
h Screw in the two retaining screws and lock the disk tray in place.
5 Restart the system.
6 Verify that the disks begin the mirroring process.