AMCC 3WARE 720-0138-00 - Manual (Page 65)

Moving a Unit from One Controller to Another
www.3ware.com 57
Launch the Macintosh Disk Utility, select the unit, and click the
Unmount button the toolbar, or select the icon for the unit on the desktop
and drag it to the trash.
This step is very important. If a unit is not unmounted and you remove
it, it is the equivalent of physically yanking a hard drive out from under
the operating system. You could lose data, the system could hang, or the
controller could reset.
3 In 3DM, choose Management > Maintenance .
4 In the Unit Maintenance table on the Maintenance page, select the unit
you want to remove and click Remove Unit .
5 When a message asks you to confirm, click OK.
The unit number and information is removed from the Maintenance page
in 3DM.
The operating system is notified that the unit was removed.
You can now physically remove the drives and move them to another
controller.
If you change your mind and want to reuse the drives and unit on the
current controller, click
Rescan Controller.
Moving a Unit from One Controller to Another
After you have configured a unit on a 3ware 9590SE controller, you can move
it to a different 3ware 9590SE controller, and retain the configuration on the
new controller. This is referred to as “array roaming.”
When connecting the unit to the new controller, you do not have to physically
connect the drives to the same ports to which they were connected on the
previous controller. The firmware will still recognize the unit. This feature is
referred to as “disk roaming.”
3DM includes two features that help you move a unit without powering down
the system, allowing you to hot-swap the unit. The Remove Unit feature lets
you prepare a unit to be disconnected from the controller, and the Rescan
feature checks the controller for drives that are now connected, and updates
the 3DM screens with current information. For details, see “Removing a
Unit” on page 56 and “Rescanning the Controller” on page 60.
Note: Moving a unit to another controller while the unit is in the migration state is
supported with one restriction. If the unit was in the middle of the migration process
and the controller was shutdown uncleanly, the unit cannot be moved to another
controller until the unit has recovered from the unclean shutdown.