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SAS / SATA II NAS System
74 User Manual
5.5 System Controls
5.5.1 System Configuration
To set the RAID subsystem system configuration options, click the
System
Configuration link under the System Controls menu. The System
Configurations screen will be shown. Set the desired system option as needed.
System Beeper Setting:
This option is used to Disable or Enable the system’s RAID controller alarm beeper.
Background Task Priority:
The Background Task Priority indicates how much time and system resource the RAID
controller devotes to a background task, such as a rebuild operation. The RAID
subsystem allows user to choose the background task priority (High 80%, Medium 50%,
Low 25%, and Ultra Low 5%) to balance between background task process and
Volume Set access. For high RAID subsystem performance, specify a low value.
JBOD/RAID Configuration:
The RAID subsystem supports JBOD and RAID configuration.
SATA NCQ Support:
NCQ is a command protocol in Serial ATA that can only be implemented on native Serial
ATA hard drives. It allows multiple commands to be outstanding within a drive at the
same time. Drives that support NCQ have an internal queue where outstanding
commands can be dynamically rescheduled or re-ordered, along with the necessary
tracking mechanisms for outstanding and completed portions of the workload. Disabled
or Enable the SATA NCQ function.