5.3 Host Commands

SMART self-test

The host computer can issue the SMART Execute Off-line Immediate sub- command (FR Register = 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 (FR Register = D5h, SN Register = 06h, SC register = 01h) and can read the SMART self-test log.

Table 5.18 SMART self-test log data format

Byte

 

Item

00, 01

Self-test log data structure

02

Self-test log 1

Self-test number (SN Register Value)

03

 

Self-test execution status

04, 05

 

Life time. Total power-on time [hours]

06

 

Self-test error No.

07 to 0A

 

Error LBA

0B to 19

 

Vendor unique

1A to 1F9

Self-test log 2 to 21

(Each log data format is the same as that in

 

 

byte 02 to 19.)

1FA, 1FB

Vendor unique

 

1FC

Self-test index

 

1FD, 1FE

Reserved

 

1FF

Check sum

 

Self-test number

Indicates the type of self-test executed.

Self-test execution status

Same as byte 16Bh of the attribute value.

Self-test index

If this is "00h", it indicates the status where the self-test has never been executed.

Check sum

Two's complementary for the lowest-order 1 byte that is obtained by adding 1 byte after another for as many as 511 bytes from the top.

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Fujitsu MHW2040AC, MHW2060AC manual Smart self-test log data format, 1FC, Self-test number, Self-test index

MHW2060AC, MHW2040AC specifications

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