CCTV Qvis DVR series User Manual download pdf (Page 50)

Retrieve HDD redundancy

The user can retrieve the backup recording data from redundancy HDD when the RW

HDD is damaged or data lost. Firstly, shut down DVR and remove damaged HDD, then

restart DVR;

Secondly, Get into 【Main menu】→【Storage】, set redundancy HDD as a reading

and writing HDD, then it can be searched.

4.6 HDD S.M.A.R.T

S.M.A.R.T (Self-Monitoring, Analysis and Reporting Technology)

S.M.A.R.T HDD can analyse the head, disc, motor, circuit operation, history and default

security values via the monitor instruction in HDD and surveillance software. An alarm

will be sent to the user automatically when the value is outside the scope of a low alert

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

The ID detection code is not always the same, the manufacturer can use different ID

code or increase/decrease its quantity according to the detected parameter’s quantity.

For example: the ID detection code of WEASTERN DIGITAL’s product is “04”, the

parameter is for Start/Stop Count, but the parameter has the same code as the Fujitsu’s

product and means: “Number of times the spindle motor is activated”.

2. Attribute Description

Attribute Description: name of detection item. Manufacturer can increase or decrease.

Because the ATA standard updates constantly, sometimes there are maybe different

models in same brand, but you must ensure that they are the same 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

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CCTV Qvis DVR series User Manual Page 50