Installation guide

Chapter 4. Web Browser-Based Configuration
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4.8.1 System Configuration
To set the RAID system function, move the cursor to the main menu and click the
“System Controls” link. The “Raid System Function” menu will show all items, then
select the desired function.
4.8.1.1 System Beeper Setting:
The “System Beeper Setting” function is used to “Disabled” or ”Enabled” the RAID
subsystem alarm tone generator.
4.8.1.2 Back Ground Task priority:
The “Background Task Priority” is a relative indication of how much time the controller
devotes to a rebuild operation. The RAID subsystem allows the user to choose the
rebuild priority (Ultra Low, Low, Normal and High) to balance volume set access and
rebuild tasks appropriately. For high array performance, specify a “Low” value.
4.8.1.3 JBOD /RAID Mode Configuration
JBOD is an acronym for “Just a Bunch of Disk”. A group of hard disks in a RAID
subsystem are not set up as any type of RAID configuration. All drives are available to
the operating system as an individual disk. JBOD does not provide data redundancy.
User needs to delete the RAID set, when you want to change the option from the
RAID to the JBOD function.
4.8.1.4 SATA NCQ Support
The controller supports both SAS and SATA disk drives. The SATA NCQ 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. The RAID
subsystem allows the user to select the SATA NCQ support: “Enabled” or “Disabled”.