Avago Technologies 3ware 9650SE-12ML (Channel) - Manual (Page 148)

Configuring Units
136 3ware SAS/SATA RAID Software User Guide, Version 9.5.1
Figure 59. Deleting a Unit in 3BM
4 Tab to the OK button and press Enter .
You return to the main 3BM screen, and the drives associated with the
unit now appear in the list of Available Drives.
5 Press F8 to save your changes, or press Esc and then Yes .
Removing a Unit
Removing a unit through software (also known as 'array roaming') keeps the
data intact on the unit. It allows you to move the unit to another controller or
to store the drives for safekeeping purposes.
Removing a unit is different than deleting a unit. Deleting a unit will destroy
the data on the unit.
Remember: The unit is not actually deleted and no data is
overwritten until you press the F8 key to save your changes, or press
Esc and select Yes when asked if you want to save.
Warning: It is important to remove the unit through software, 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.
Power-down your system before physically removing any drive that is not in a hot
swap bay.
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 143.