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Appendix C: Using the Adaptec RAID Configuration Utility ● 111
General Controller Settings
Note:
Default settings are shown in bold type.
Option Description
Drive’s Write Cache When set to Enable All, write cache is enabled on all disk drives on the
controller. (Enabling the write cache overrides any individual drive
settings in Adaptec Storage Manager.) When set to Disable All, write
cache is not used on the disk drives. When set to Drive Specific, write
cache is enabled/disabled on a per-drive basis in Adaptec Storage
Manager.
Caution—When write cache is enabled, there is a slight possibility of
data loss or corruption during a power failure.
Runtime BIOS When enabled, the controller BIOS allows the controller to act as a
bootable device. Disabling the BIOS allows another controller to act as a
bootable device.
Automatic Failover When enabled, the controller automatically rebuilds an array when a
failed disk drive is replaced. When disabled, the array must be rebuilt
manually.
Array Background
Consistency Check
When enabled, the controller constantly verifies a redundant array. Note
that there may be a significant performance reduction. Default is
disabled.
Array-based BBS
Support
When enabled in systems that support BBS, the controller presents
attached bootable devices up to the BIOS for boot device selection. This
is relevant for logical arrays. Default is disabled.
SATA Native Command
Queuing (NCQ)
When enabled, NCQ is enabled. Disable this feature if you want to
attach more than 48 SATA II disk drives. Only available with SATA II disk
drives.
Physical Drives Display
During POST
When enabled, connected disk drives are displayed during system Power
On Self Test (POST). Displaying the disk drives adds a few seconds to
the overall POST time. Default is disabled.
DVD/CD-ROM Boot
Support
When enabled, the system can be booted from a bootable DVD/CD.
(This setting is not available on all RAID controller models.)
Removable Media
Devices Boot Support
When enabled, removable media devices, such as CD drives, are
supported. (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 remain off after a
reboot.
Default Background
Task Priority
Sets the default priority for background tasks on the controller (such as
logical drive creation) to High, Medium, or Low. Default is Medium.
Note—This setting applies to new tasks. It does not affect currently
running tasks.
LED Indication Mode When set to Activity and Fault, the drive activity LEDs blink to indicate
I/O activity (randomly depending on I/O load) and fault (steady 1Hz).
When set to Fault Only, the drive activity LEDs blink to indicate fault
state only. For Series 2 and Series 5 controllers, default is Activity and
Fault. For Series 6/6E controllers, default is Fault Only.