66 RAID Configuration and ManagementEnabling the Alarm to Alert in Case of Physical Disk FailuresThe PERC 5/E Adapter uses an audible alarm to alert you to key critical and warning events involving thevirtual disks or physical disks. You can use the BIOS Configuration Utility to enable or disable the on-boardalarm tone. See Table 6-8 for the list of critical and warning events, severity levels of the events, andaudible codes.Perform the following steps to enable the alarm in the BIOS Configuration Utility.1 Press to access the Ctrl Mgmt menu screen.2 Press in the Settings box to move the cursor to Enable Alarm.3 Press the spacebar to select Enable Alarm.An X displays next to Enable Alarm.4 Press to move the cursor to the Apply button, then press to apply the selection.The alarm is enabled. To disable the alarm, use the spacebar to deselect the Enable Alarm control, andthen select Apply.Checking Data ConsistencySelect the Consistency Check option in the configuration utility to verify the redundancy data in virtualdisks that use RAID levels 1, 5, 10, and 50. (RAID 0 does not provide data redundancy.)NOTE: Dell recommends that you run data consistency checks on a redundant array at least once a month. Thisallows detection and automatic replacement of bad blocks. Finding a bad block during a rebuild of a failed physicaldisk is a serious problem, as the system does not have the redundancy to recover the data.NOTE: The system will take longer to reboot after you perform a data consistency check.Perform the following steps to run a Consistency Check.1 Press to access the VD Mgmt menu screen.2 Press the down arrow key to highlight Virtual Disk #.3 Press to display the menu of available actions.4 Press the down arrow key to select Consistency Check.5 Press the right arrow key to display the menu of available actions, Start and Stop.6 Select Start and press to run a Consistency Check.The Consistency Check runs and checks the redundancy data in the virtual disks.7 After you start the Consistency Check, press to display the previous menu.Dell_PERC5_UG.book Page 66 Tuesday, February 13, 2007 6:02 PM
