5.3 Host Commands

•

Status

 

 

 

 

Bits 0 to 3: Indicates the drive status when received error commands according

 

 

to the following table.

 

Bits 4 to 7: Vendor unique

 

 

 

 

 

 

Status

 

Meaning

 

 

 

 

 

 

 

0

 

Unclear status

 

 

 

 

 

 

 

1

 

Sleep status

 

 

 

 

 

 

 

2

 

Standby status

 

 

 

 

 

 

 

3

 

Active status (BSY bit = 0)

 

 

 

 

 

 

 

4

 

Off-line data collection being executed

 

 

 

 

 

 

 

5 to F

 

Reserved

 

 

 

 

 

 

Table 5.19 Data format of SMART Comprehensive Error Log

Byte(hex)

First sector

Next sector

 

 

 

00

SMART Error Logging 01h

Reserved

 

 

 

01

Index Pointer Latest Error Data Structure

Reserved

 

 

 

02 to 5B

1st Error Log Data Structure

Error Log Data Structure 5n+1

 

 

 

5C to B5

2nd Error Log Data Structure2

Error Log Data Structure 5n+2

 

 

 

B6 to 10F

3rd Error Log Data Structure3

Error Log Data Structure 5n+3

 

 

 

110 to 169

4th Error Log Data Structure4

Error Log Data Structure 5n+4

 

 

 

16A to 1C3

5thError Log Data Structure5

Error Log Data Structure 5n+5

 

 

 

1C4 to 1C5

Total number of drive errors

Reserved

 

 

 

1C6 to 1FE

Reserved

Reserved

 

 

 

1FF

Check sum

Check sum

 

 

 

"n" indicates sector number in the Error Log. The first sector is 0.

•SMART Self-Test

The host computer can issue the SMART Execute Off-line Immediate sub-command (Features field = D4h) and cause the device to execute a self-test. When the self-test is completed, the device saves the SMART self-test log to the disk medium.

The host computer can issue the SMART Read Log Sector sub-command (Features field = D5h, Sector Number field = 06h, Sector Count field = 01h) and can read the SMART self-test log.

C141-E280

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