Media Server User's Manual

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Total Capacity Shows the total SATA hard disk capacity.
Disk Power
Management
The administrator can set the disk to power down after a period
of inactivity.
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S.M.A.R.T. Information
On the Disks Information screen, the status
of each disk will be displayed in the Status
column. Clicking on an OK or Warning link
will display the S.M.A.R.T Information
window for that particular disk.
S.M.A.R.T. Information
Item Description
Tray Number Tray the hard disk is installed in.
Model Model name of the installed hard disk.
Power ON Hours Count of hours in power-on state. The raw value of this attribute
shows total count of hours (or minutes, or seconds, depending
on manufacturer) in power-on state.
Temperature Celsius The current temperature of the hard disk in degrees Celsius
Reallocated Sector
Count
Count of reallocated sectors. When the hard drive finds a
read/write/verification error, it marks this sector as "reallocated"
and transfers data to a special reserved area (spare area).
This process is also known as remapping and "reallocated"
sectors are called remaps. This is why, on a modern hard disks,
you can not see "bad blocks" while testing the surface - all bad
blocks are hidden in reallocated sectors. However, the more
sectors that are reallocated, the more a decrease (up to 10% or
more) can be noticed in disk read/write speeds.
Current Pending
Sector
Current count of unstable sectors (waiting for remapping). The
raw value of this attribute indicates the total number of sectors
waiting for remapping. Later, when some of these sectors are
read successfully, the value is decreased. If errors still occur
when reading sectors, the hard drive will try to restore the data,
transfer it to the reserved disk area (spare area), and mark this
sector as remapped. If this attribute value remains at zero, it
indicates that the quality of the corresponding surface area is
low.
Raw Read Error Rate This attribute value depends on read errors and disk surface
condition, and indicates the rate of hardware read errors that
occurred when reading data from a disk surface. Lower values
indicate that there is a problem with either the disk surface or
the read/write heads.
Seek Error Rate Rate of seek errors by the magnetic heads. If there is a failure
in the mechanical positioning system, servo damage or a
thermal widening of the hard disk, seek errors arise. More seek
errors indicates a worsening condition of a disk surface and the
disk mechanical subsystem.
Back Press Back to go back to the Disks Information screen.
When
on the har
consid
the Status shows Warning, it usually means there are bad sectors
d disk. It is shown only as a precaution and you should
er changing the drives.
NOTE