Configuration and Array Maintenance Settingswww.3ware.com 93Specifying a hot spareEscalade ATA RAID Controllers give you the option to specify a hot sparefrom one of your available ports (currently shown as offline). Hot sparesshould be selected after mirror or RAID 5 creation. Refer to Creating a diskarray in the 3ware Disk Array Configuration Utility chapter. To specify a hotspare after the system is booted, physically add the spare drive and click onthe check box next to the available offline port; then click on the Add Sparebutton.Note: Hot spare drives must be equal to or larger than the drivesused for the redundant array.Auto rebuild of a redundant arrayIf a hot spare is specified and the array degrades, an event notification is gen-erated and the hot spare dynamically replaces the failed drive in a redundantarray without user intervention. Rebuild will automatically be launched asbackground process and an event notification will notify the user when therebuild process is complete (if 3DM is running and e-mail notification issetup).Rebuilding a redundant array with a hot swap driveHot swap allows a user to replace a failed drive in a redundant array while thesystem remains up. Hot swap can be used when 24x7 system operation is aconsideration. If multiple drives are faulted in a RAID 10 configuration, thedrives are rebuilt sequentially starting with the lowest port number.1 Click on the check box of the failed drive.2 Click the Remove Drive button.3 Physically remove the failed drive and replace it with a new drive.4 Click on the check box of the new drive.5 Click the Add Drive button.6 Click on the check boxes of at least two members of the array to berebuilt. This should include the new drive added in step 3.7 Click the Rebuild Array button. The rebuild process will run in thebackground and an event notification will be sent when it is completed.Selecting Force Continue on Source ErrorsSelecting the Force Continue on Source Errors check box prior to rebuild-ing the array ensures rebuilds are not terminated if ECC errors are detected on
