Fujitsu MHV2040AS Smart self-test log data format, 1FC, Self-test number, Self-test index

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

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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.

C141-E221 5-55