Qsan Technology P300H61, User Manual

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Command
queuing Newer SATA and most SCSI disks can queue multiple commands
and handle one by one. Default is
“Enabled” .
•
PD operation description:
Set Free disk Make the selected hard drive be free for use.
Set Global
spare Set the selected hard drive to global spare of all RGs.
Set
Dedicated
spares Set a hard drive to dedicated spare of the selected RG.
Upgrade Upgrade hard drive firmware.
Disk Scrub Scrub the hard drive.
Turn on/off
the
indication
LED Turn on the indication LED of the hard drive. Click again to turn
off.
More
information Show hard drive detail information.
4.4.2 RAID group
“RAID group”
can view the status of each RAID group, create, and modify RAID groups.
The following is an example to create a RG.
Step 1: Click “Create” , enter “Name” , choose “RAID level” , click “Select PD” to
select PD, assign the RG’s “Preferred owner” . Then click “OK” . The “Write Cache”
option is to enable or disable the write cache option of hard drives. The “Standby” option
is to enable or disable the auto spindown function of hard drives, when this option is
enabled and hard drives have no I/O access after certain period of time, they will spin
down automatically. The
“Readahead” option is to enable or disable the read ahead
function. The “Command queuing” option is to enable or disable the hard drives’
command queue function.