Self-Test Log Data Structure - IBM DARA-206000 - Travelstar 12 GB Hard Drive Specifications

12.31.5 Self-test log data structure

The following defines the 512 bytes that make up the Self-test log sector. All multi-byte fields shown in
these data structures follow the ATA/ATAPI-4 specifications for byte ordering.
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
S e l f t e s t n u m b e r
S e l f t e s t e x e c u t i o n s t a t u s
L i f e t i m e p o w e r o n h o u r s
S e l f t e s t f a i l u r e c h e c k p o i n t
L B A o f f i r s t f a i l u r e
V e n d o r s p e c i f i c
. . .
V e n d o r s p e c i f i c
S e l f t e s t l o g p o i n t e r
R e s e r v e d
D a t a s t r u c t u r e c h e c k s u m
N o t e : n i s 0 t h r o u g h 2 0
Figure 123. Self-test log data structure
The data structure contains the descriptor of Self-test that the device has performed. Each descriptor is 24
bytes long and the self-test data structure is capable to contain up to 21 descriptors.
After 21 descriptors has been recorded, the oldest descriptor will be overwritten with new descriptor.
Self-test log pointer points the most recent descriptor. When there is no descriptor the value is 0. When there
is descriptor(s) the value is 1 through 21.
172
O E M Specifications of DARA-2xxxxx 2.5 inch H D D Rev 2.1
B y t e s O f f s e t
2 0 0 h
1 n * 1 8 h + 0 2 h
1 n * 1 8 h + 0 3 h
2 n * 1 8 h + 0 4 h
1 n * 1 8 h + 0 6 h
4 n * 1 8 h + 0 7 h
1 5 n * 1 8 h + 0 B h
2 1 F A h
1 1 F C h
2 1 F D h
1 1 F F h
5 1 2