User manual

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RAID group.
 “Free disk”  This hard drive is free for use.
 “Dedicated spare”  This hard drive has been set as
dedicated spare of a RG.
 “Global spare”  This hard drive has been set as
global spare of all RGs.
Vendor Hard drive vendor.
Serial Hard drive serial number.
Type Hard drive type:
 “SATA”  SATA disk.
 “SATA2”  SATA II disk.
 “SAS”  SAS disk.
Write cache Hard drive write cache is enabled or disabled. Default is
“Enabled”.
Standby HDD auto spindown to save power. Default is “Disabled”.
Readahead This feature makes data be loaded to disk’s buffer in advance for
further use. Default is “Enabled”.
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 Turn on the indication LED of the hard drive. Click again to turn