Configuring Units134 3ware SAS/SATA RAID Software User Guide, Version 9.5.1Deleting a Unit through 3DMIn 3DM, the command for deleting a unit is on the Maintenance page. Besure to follow steps 1 through 3 in the instructions before using the Deletecommand.To delete a unit through 3DM1 Make sure the operating system is not accessing the unit you want todelete.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 Backup any data you want to keep.3 Unmount the unit.This step is very important. If a unit is not unmounted and you delete it,it is the equivalent of physically yanking a hard drive out from under theoperating 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 4 In 3DM, choose Management > Maintenance.5 In the Unit Maintenance section of the Maintenance page, select the unityou want to remove and click Delete Unit.6 When a message asks you to confirm, click OK.Configuration information associating the drives with the unit is deleted,and the individual drives appear in the Available Drives list (Figure 58).You can now use them as part of another unit, or designate them asSpares, for use in a rebuild.
