Removing A Unit; Removing A Unit Through 3Dm - 3Ware 9550SX-4LP User Manual

Removing a Unit

Removing a unit allows you to safely remove drives from a controller in order
to move the unit to another controller or to store the drives for safekeeping
purposes. This process is sometimes referred to as "array roaming." Hot swap
carriers are required unless you power down first.
When you remove a unit (in contrast to deleting a unit), information about the
unit remains intact on the drives. This allows the drives to be reassembled into
a unit again on this controller, or if moved to another controller.

Removing a Unit Through 3DM

In 3DM, the command for deleting a unit is on the
sure to follow steps 1 and 2in the instructions before using the Remove
command.
To remove a unit through 3DM
1 Make sure no I/Os are being issued to the unit you want to remove.
For example, make sure you are not copying files to the unit, and make
sure that there are no applications with open files on that unit.
2 Unmount the unit.
This step is very important.
it, it is the equivalent of physically yanking a hard drive out from under
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It is important to remove the unit through software,
Warning:
before removing it physically. Failure to do so could result in a
system crash or hang and may even corrupt the data and the unit
configuration from being reassembled later.
Note: You can also remove a drive, if you want to force a degrade
on a redundant unit, or if you want to remove a drive from the
"Available Drives" list so that you can then remove it from the
system. For more information, see "Removing a Drive" on
page 169.
If you do not have hot swap carriers, you do not need to
Note:
remove a unit via 3DM. Simply power down the system and
remove the applicable drives. Refer to your system's user guide for
details on removing fixed disks. If you do have hot swap carriers,
follow the steps below.
If a unit is not unmounted and you remove
Removing a Unit
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Maintenance
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