Copyright@1993~2013 Advanced Computer & Network Corp. All Rights Reserved.
57
U Series User Manual
the pool is not ready for use yet.
Health
The health of the hard drive:
Good: the hard drive is good.
Failed: the hard drive is failed.
Error alert: S.M.A.R.T. error alert.
Read errors: the hard drive has unrecoverable read errors.
Reserved: the hard drive contains pool information; it should be the
member of pool before. Set it free if you won’t use it anymore.
Usage
The usage of the hard drive:
RAID disk: This hard drive has been set to a RAID group.
Free disk: This hard drive is free for use.
Dedicated spare: This hard drive has been set as dedicated spare of
a pool.
SSD
HDD or SSD.
Vendor
Hard drive vendor.
Serial
Hard drive serial number.
Type
Hard drive rate:
SAS 6Gb/s.
SAS 3Gb/s.
SATA 6Gb/s.
SATA 3Gb/s.
SATA 1.5Gb/s.
Write cache
Hard drive write cache is enabled or disabled. The default value is Enabled.
Standby
HDD auto spindown to save power. The default value is Disabled.
Readahead
This feature makes data be loaded to disk’s buffer in advance for further
use. The default value is Enabled.
Command
queuing
Newer SATA and most SCSI disks can queue multiple commands and
handle one by one. The default value is Enabled.
The drop-down options by clicking mouse right button are available on this tab:
Set Free disk: Make the selected hard drive be free for use.
S.M.A.R.T.
S.M.A.R.T. (Self-Monitoring Analysis and Reporting Technology) is a diagnostic tool for hard drives
to deliver warning of drive failures in advance. The menu Configuration -> Storage -> S.M.A.R.T. or
clicking S.M.A.R.T. tab of the operation area provides users a chance to take actions before a
possible drive failure.
S.M.A.R.T. measures many attributes of the hard drive all the time and inspects the properties of
hard drives which are close to be out of tolerance. The advanced notice of possible hard drive