Seagate ST31000424CS, ST3250312CS, ST3250412CS, ST3500414CS Description if bit is set to Bit Word

Word	Description	Value
		ST31000424CS =1,953,525,168
		ST31000322CS =1,953,525,168
	Total number of user-addressable LBA sectors available (Refer to	ST3500414CS =	976,773,168
		ST3500312CS =	976,773,168
	Section 2.2 for related information). These words are required for
100–103		ST3320413CS =	625,142,448
	drives that support the 48-bit addressing feature. Maximum value:
		ST3320311CS =	625,142,448
	0000FFFFFFFFFFFFh.
		ST3250412CS =	488,397,168
		ST3250312CS =	488,397,168
		ST3160316CS =	312,581,808
104–107	ATA-reserved	0000H
108–111	The mandatory value of the world wide name (WWN) for the drive.	Each drive will have a unique
	NOTE: This field is valid if word 84, bit 8 is set to 1 indicating 64-bit	value.
	WWN support.
112–127	ATA-reserved	0000H
128	Security status	0001H
129–159	Seagate-reserved	xxxxH
160–254	ATA-reserved	0000H
255	Integrity word	xxA5H

Note. Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported

Note. Refer to the bit descriptions below for words 63, 84, and 88 of the Identify Drive data.

Description (if bit is set to 1)

Bit	Word 63
0	Multiword DMA mode 0 is supported.
1	Multiword DMA mode 1 is supported.
2	Multiword DMA mode 2 is supported.
8	Multiword DMA mode 0 is currently active.
9	Multiword DMA mode 1 is currently active.
10	Multiword DMA mode 2 is currently active.
Bit	Word 84
0	SMART error loggin is supported.
1	SMART self-test is supported.
2	Media serial number is supported.
3	Media Card Pass Through Command feature set is supported.
4	Streaming feature set is supported.
5	GPL feature set is supported.
6	WRITE DMA FUA EXT and WRITE MULTIPLE FUA EXT commands are supported.
7	WRITE DMA QUEUED FUA EXT command is supported.
8	64-bit World Wide Name is supported.
9-10	Obsolete.
11-12	Reserved for TLC.

Video 3.5 HDD Product Manual, Rev. J 31