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Remove Unit. Removes a selected unit and allows you to unplug the drives
and move the unit to another controller. The data on the unit remain intact.
Delete Unit. Deletes the selected unit and allows you to use the drives to
create another unit. The drives appear in the list of Available Drives.
After deletion, the operating system is notified that the unit was deleted.
• In FreeBSD, Linux, and OpenSolaris the device node associated with this
unit is removed.
• In Windows the disk is removed from Disk Management.
• In Mac OS the disk is removed from Disk Utility.
• In VMware, the deleted unit won’t be updated by the operating system
until you perform a rescan on the RAID controller.
Caution: Before you click Remove Unit, make sure the unit you are removing is
unmounted from the operating system and that the system is not accessing it.
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.
Under certain operating systems, if you try to remove the unit in either CLI or 3DM2
and the unit is still in use, you get an error message telling you the unit can not be
removed. Make sure you do not have any utility accessing the unit then follow your
system instructions on the procedure to unmount the unit before removing it.
For how to unmount a unit under various operating systems, see the discussing
under “Deleting a Unit through 3DM2” on page 121.
Warning: Physically removing drives which are not in hot swap bays can result in
a system hang, data loss, or may even damage the system and the drive.
Caution: Before you click Delete Unit, make sure the unit you are removing is
unmounted from the operating system and that the system is not accessing it.
Devices can be unmounted through the operating system. For details, see the
discussion under Remove Unit, above.
Warning: When a unit is deleted, the data will be permanently deleted: the drives
cannot be reassembled into the same unit. If you want to reassemble the drives on
another controller and access the existing data, use Remove Unit
instead of
Delete Unit.
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