Manual Overmax Camspot Recorder 2.1 (page 67 of 72) (English, Polish)

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10.3 HDD S.M.A.R.T

S.M.A.R.T: “Self-Monitoring, Analysis and Reporting Technology”

S.M.A.R.T HDD can analysis head, disc, motor, circuit operation, history and default security values via monitor

instruction in HDD and surveillance software in host. Alarm will be sent to user automatically when the value is

outside the scope of the security situation.

Detection parameters of Seagate HDD for example are divided into seven: ID detection code, Attribute

Description, Threshold, Attribute Value, Worst, Date, and Status.

1、ID detection code

ID detection code is not the only; manufacturer can use different ID code or increase or decrease its quantity

according to the detected parameter’s quantity.

For example: the ID detection code of WEASTERN DIGITAL’s product is “04”, parameter is Start/Stop Count,

but the parameter of same code in Fujitsu’s product is “Number of times the spindle motor is activated”.

2、Attribute Description

Attribute Description: name of detection item. Manufacturer can increase or decrease。As ATA standard update

constantly, sometimes different models in same brand maybe different ,but must ensure major test items specified

in S.M.A.R.T .(although different manufacturers have specific naming convention ,the essence of monitoring is

the same.)

1 Read Error Rate

2 Spin up Time

4 Start/Stop Count

5 Relocated Sector Count

7 Seek Error Rate

9 Power-on Hours Count

10 Spin up Retry Count

194 Power temperatures

195 ECC on the Fly count

197 Current Pending Sector Count

198 Disconnection beyond repair

199 CRC cyclic redundancy check

200 Write Error Count

Note: Different manufacturers and different models have different attribute description , the user has no need

to know exact meaning ,attribute detection values enough for them.

3、Threshold

It is specified by manufacturer calculated through a specific formula. If there is a attribute value lower than

the threshold, which means HDD become unreliable and data stored is very easy to lose. Composition and size of

reliable attribute values is different for different HDD. It should be noted that, ATA standard only provides some

SMART parameters; it does not provide a specific value. "Threshold" value is determined by manufacturers based

on products’ features. Thus, results tested by manufacturer provided detection software is very different from

testing software under Windows (such as AIDA32)

4、Attribute Value

Attribute value is the maximum normal value; the general range is from 1 to 253. Typically, the maximum

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Overmax Camspot Recorder 2.1 Manual

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