Areca ARC-1200 - System Beeper Setting; Background Task Priority; JBOD;RAID Configuration; Maximum SATA Mode Supported

WEB BROWSER-BASED CONFIGURATION
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• System Beeper Setting
The “System Beeper Setting” function is used to “Disabled” or
“Enabled” the SATA RAID controller alarm tone generator.
• Background Task Priority
The “background Task Priority” is a relative indication of how
much time the controller devotes to a rebuild operation. The
SATA RAID controller allows the user to choose the rebuild
priority (UltraLow, Low, Normal, High) to balance volume set
access and rebuild tasks appropriately. For high array perfor-
mance, specify a “Low” value.
• JBOD/RAID Conguration
JBOD is an acronym for “Just a Bunch Of Disks”. A group of
hard disks in a RAID controller are not set up as any type of
RAID conguration. All drives are available to the operating
system as an individual disk. JBOD does not provide data
redundancy. that is created by the concatenation of partitions
on the disk. The OS can see all disks when this option is select-
ed. It is necessary to delete a RAID set if the disks in that set
are to be converted to JBOD mode.
•
Maximum SATA Mode Supported
The SATA RAID 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
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 user to choose the SATA mode (slowest
to fastest): SATA150, SATA150+NCQ, SATA300, SATA300+NCQ.
• HDD Read Ahead Cache
Allow Read Ahead (Default: Enabled)—When Enabled, the
drive’s read ahead cache algorithm is used, providing maximum
performance under most circumstances.