Individual Attribute Data Structure - IBM DTTA-351010 - Deskstar 10.1 GB Hard Drive Specifications

12.31.2.2 Individual Attribute Data Structure

The following defines the 12 bytes that make up the information for each Attribute entry in the Device Attri-
bute Data Structure.
D e s c r i p t i o n
A t t r i b u t e I D N u m b e r ( 0 1 h t o F F h )
S t a t u s F l a g s
P r e F a i l u r e / A d v i s o r y b i t
O n l i n e C o l l e c t i o n b i t
V e n d o r S p e c i f i c ( 4 b i t s )
R e s e r v e d ( 1 0 b i t s , a l l 0 )
A t t r i b u t e V a l u e ( v a l i d v a l u e s f r o m 0 1 h t o F E h )
0 0 h i n v a l i d f o r a t t r i b u t e v a l u e
0 1 h m i n i m u m v a l u e
6 4 h i n i t i a l v a l u e f o r a l l a t t r i b u t e s p r i o r t o
a n y d a t a c o l l e c t i o n
F D h m a x i m u m v a l u e
F E h v a l u e i s n o t v a l i d
F F h i n v a l i d f o r a t t r i b u t e v a l u e
V e n d o r S p e c i f i c
T o t a l B y t e s
Figure 115. Individual Attribute Data Structure
12.31.2.2.1 Attribute ID Numbers: Any non-zero value in the Attribute ID Number indicates an active
attribute. The device supports following Attribute ID Numbers. Those marked with (*) indicate that corre-
sponding Attribute Values can be collected only during off-line test.
ID Attribute Name
0 Indicates that this entry in the data structure is not used
1 Raw Read Error Rate
2 Throughput Performance (*)
3 Spin Up Time
4 Start/Stop Count
5 Reallocated Sector Count
7 Seek Error Rate
B y t e s O f f s e t
1
2
1
n o t t o b e u s e d
n o t t o b e u s e d
8
1 2
F o r m a t
0 0 h b i n a r y
0 1 h b i t f l a g s
0 3 h b i n a r y
0 4 h b i n a r y
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