Appendix C: Using the Adaptec RAID Configuration Utility ● 88Modifying Your Controller’s ConfigurationNote: Default controller settings are suitable for most computers. Adaptec recommends thatyou do not change the default setting.To modify your controller’s basic settings, select Controller Configuration from the mainSerialSelect menu.To modify your controller’s power management settings, select Advanced Configuration.Note: The PHY settings are read-only and not editable.This section describes the controller configuration options. Some options may not be availablefor your controller.General Controller SettingsNote: Default settings are shown in bold type.Option DescriptionDrive’s Write Cache When enabled, write cache is enabled on the disk drive. When disabled,write cache is not used on the disk drive.Caution—When write cache is enabled, there is a slight possibility ofdata loss or corruption during a power failure.Runtime BIOS When enabled, the controller BIOS allows the controller to act as abootable device. Disabling the BIOS allows another controller to act as abootable device.Automatic Failover When enabled, the controller automatically rebuilds an array when afailed disk drive is replaced. When disabled, the array must be rebuiltmanually.Array BackgroundConsistency CheckWhen enabled, the controller constantly verifies a redundant array. Notethat there may be a significant performance reduction. Default isdisabled.Array-based BBSSupportWhen enabled in systems that support BBS, the controller presentsattached bootable devices up to the BIOS for boot device selection. Thisis relevant for logical arrays. Default is disabled.SATA Native CommandQueuing (NCQ)When enabled, NCQ is enabled. Disable this feature if you want toattach more than 48 SATA II disk drives. Only available with SATA II diskdrives.Physical Drives DisplayDuring POSTWhen enabled, connected disk drives are displayed during system PowerOn Self Test (POST). Displaying the disk drives adds a few seconds tothe overall POST time. Default is disabled.DVD/CD-ROM BootSupportWhen enabled, the system can be booted from a bootable CD. (Thissetting is not available on all RAID controller models.)Note—CD’s are not supported by current software.Removable MediaDevices Boot SupportWhen enabled, removable media devices, such as CD drives, aresupported. (This setting is not available on all RAID controller models.)Alarm Control When enabled, the alarm sounds. Default is enabled.Note—When the alarm is turned off (disabled), it will automatically turnback on after a reboot.