Thecus Technology 1U4500R User Manual

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23 
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 
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. 
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. 
Cancel Press 
Cancel to go back to the Disks Information screen. 
 
 
 
RAID Information 
From the Storage menu, choose the RAID 
item and the RAID Information screen 
appears.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NOTE 
If the Reallocated Sector Count or Current Pending Sector of a hard disk drive is not 
zero, the status of the disk will show “Warning”. This warning is only used to alert 
the system administrator that there are bad sectors on the disk, and they should 
replace those disks as soon as possible.