User`s manual

25
Chapter 3: System Administration
S.M.A.R.T. Information•
On the Disk Information screen, select a disk then click on “Smart” to list the S.M.A.R.T. info of the
associated disk.
You may also perform a disk SMART test; simply click “Test” to start the SMART test. The result is only
for reference and the system will not take any action from its results.
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 min-
utes, 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 sec-
tor 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 cannot 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.