Operation Manual

attribute value is 100 (for IBM, Quantum, and Fujitsu) or 253 (for Samsung). Of course, there are some
exceptions, for example, some models produced by Western Digital have two different attribute values, and
property value is set 200 when initial production, but after then it is changed into 100.
5 Worst
Worst value is the largest non-normal value in HDDs running. It is a value calculate for HDDs cumulative
running, it is constantly refreshed according to running cycle, and very closed to the threshold. Whether the HDD
is normal by S.M.A.R.T analysis is based on the comparison with threshold. The maximum value appear when
new HDD start to use, which would continue to decrease with the everyday use or error happen. Consequently,
larger attribute values mean better quality and higher reliability; smaller values mean more possibility of failure
increases.
6 Dates
Actual values of HDDs detection items, many items are cumulative values.
7Status
It is current statues of HDDs every attribute after analyzing and comparing above attribute values by S.M.A.R.T,
also is important information to judge HDD healthy or not.
There are three statuses: Normal, Alarm and Error----which is closely related with Pre-failure/advisory BIT.
10.4 Hard disk problem
Use Detection Tool provided by the HDD manufacturer to detect the Function of HDD to solve data problem.
We recommend Seagate and Western Digital.
How to detect Seagate HDD
a) Get into www.seagate.com Click Support & Downloads choose Sea Tools, download tool, as Diagram 7-1:
Diagram 10-1 Seagate download
b) Double-click to install downloaded file, click installed file to detect the HDD information on PC.
c) Choose the HDD for detection (other manufacturers hard disk suitable too).
How to detect WDC HDD
a) Get into www.wdc.com , choose WD support / download / SATA&SAS / WD Caviar / GP, download software
as Diagram 10-2 WD Download