Removing a Unitwww.3ware.com 129Removing a Unit Through 3DMIn 3DM, the command for deleting a unit is on the Maintenance page. Besure to follow steps 1 and 2 in the instructions before using the Removecommand.To remove a unit through 3DM1 Make sure the operating system is not accessing the unit you want toremove.For example, make sure you are not copying files to the unit, and makesure that there are no applications with open files on that unit.2 Unmount the unit.This step is very important. If a unit is not unmounted and you removeit, it is the equivalent of physically yanking a hard drive out from underthe operating system. You could lose data, the system could hang, or thecontroller could reset.Under Windows, go to Start > Administrative Tools > ComputerManagement, and select Disk Management. Remove the logical driveletter for the unit.Under Linux and FreeBSD, you can unmount the unit with this command:umount 3 In 3DM, choose Management > Maintenance.4 In the Unit Maintenance table on the Maintenance page, select the unityou 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 pagein 3DM.Note: You can also remove a drive, if you want to force a degrade on a redundantunit, or if you want to remove a drive from the “Available Drives” list so that you canthen remove it from the system. For more information, see “Removing a Drive” onpage 135.Note: If you do not have hot swap carriers, you do not need toremove a unit via 3DM. Simply power down the system and removethe applicable drives. Refer to your system’s user guide for details onremoving fixed disks. If you do have hot swap carriers, follow thesteps below.
