User manual

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WEB BROWSER-BASED CONFIGURATION
6.9 System Controls
6.9.1 System Config
To set the raid system function, move the cursor bar to the main
menu and click on he Raid System Function link. The Raid Sys-
tem Function menu will show all items. Move the cursor bar to an
item, then press Enter key to select the desired function.
• System Beeper Setting
The Alert Beeper function item is used to Disabled or Enable the
SATA RAID controller alarm tone generator.
• Background Task Priority
The Raid Rebuild Priority is a relative indication of how much
time the controller devotes to a rebuild operation. The SATA
RAID controller allows user to choose the rebuild priority (ul-
traLow, Low, Normal, High) to balance volume set access and
rebuild tasks appropriately. For high array performance, specify
a Low value.
• JBOD/RAID Configuration
JBOD is an acronym for “just a Bunch Of Disk”. It represents
a volume set that is created by the concatenation of partitions
on the disk. It can see all 8 disks, when you selected the JBOD
option. User needs to deleted the RAID set, when you want to
change the option from the RAID to the JBOD function.
• Maximum SATA Mode Supported
The Controller can support up to SATA ll, which runs up to
300MB/s. NCQ is a command protocol in Serial ATA that can
only be implemented on native Serial ATA hard drives. It al-
lows 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 user to choose the SATA Mode: SATA150,
SAT150+NCQ, SAT300, SATA300+NCQ.
• Write Disk Cache Mode