Device Attributes Data Structure - IBM DTTA-351010 - Deskstar 10.1 GB Hard Drive Specifications

12.31.2 Device Attributes Data Structure

The following defines the 512 bytes that make up the Attribute Value information. This data structure is
accessed by the host in its entirety using the SMART Read Attribute Values subcommand. All multi-byte
fields shown in these data structures follow the ATA/ATAPI-4 specifications for byte ordering, namely that
the least significant byte occupies the lowest numbered byte address location in the field.
D e s c r i p t i o n
D a t a S t r u c t u r e R e v i s i o n N u m b e r
1 s t D e v i c e A t t r i b u t e
. . .
. . .
3 0 t h D e v i c e A t t r i b u t e
O f f l i n e d a t a c o l l e c t i o n s t a t u s
T o t a l s e g m e n t s r e q u i r e d f o r
o f f l i n e d a t a c o l l e c t i o n
T o t a l t i m e i n s e c o n d s t o
c o m p l e t e n e x t s e g m e n t
C u r r e n t s e g m e n t p o i n t e r
O f f l i n e d a t a c o l l e c t i o n c a p a b i l i t y
S . M . A . R . T . c a p a b i l i t y
R e s e r v e d
V e n d o r s p e c i f i c
D a t a s t r u c t u r e c h e c k s u m
( * 1 ) S e e f o l l o w i n g d e f i n i t i o n s
( * 2 ) V a l u e v a r i e d b y a c t u a l o p e r a t i n g c o n d i t i o n
( * 3 ) F i l l e d w i t h 0 0 h
Figure 114. Device Attribute Data Structure
12.31.2.1 Data Structure Revision Number
The Data Structure Revision Number identifies which version of this data structure is implemented by the
device. This revision number will be set to 0005h. This revision number identifies both the Attribute Value
and Attribute Threshold Data structures.
150
O E M Specifications for DTTA-3xxxxx
B y t e s O f f s e t F o r m a t
2 0 0 h b i n a r y
1 2 0 2 h ( * 1 )
. .
. .
1 2 1 5 E h ( * 1 )
1 1 6 A h ( * 1 )
1 1 6 B h ( * 1 )
2 1 6 C h ( * 1 )
1 1 6 E h ( * 1 )
1 1 6 F h ( * 1 )
2 1 7 0 h ( * 1 )
1 6 1 7 2 h
1 2 5 1 8 2 h
1 1 F F h
5 1 2
V a l u e
0 0 0 5 h
( * 2 )
( * 2 )
( * 2 )
0 1 h
( * 2 )
( * 2 )
0 5 h
0 3 h
( * 3 )
( * 3 )
( * 2 )