Cactus Technologies, Limited
Byte(s)
Description
2+n*24
Self-test number
3+n*24
Self-test status
4+n*24 - 5+n*24
timestamp
6+n*24
Self-test failure checkpoint
7+n*24 - 10+n*24
LBA of first failure
11+n*24 - 25+n*24
Vendor specific
----
----
506-507
Vendor specific
508
Self-test log pointer
509-510
Reserved
511
Checksum
n is 0 through 20.
The data structure contains the descriptor of the 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 the new descriptor. The self-test log pointer points to the most recent
descriptor. When there is no descriptor, the value is 0. When there are descriptor(s), the
value is 1 through 21.
6.5.3.
SelectiveSelf-test Log Structure
Byte(s)
Description
Read/Write
0-1
Log version
R/W
2-9
Starting LBA for test span 1
R/W
10-17
Ending LBA for test span 1
R/W
18-25
Starting LBA for test span 2
R/W
26-33
Ending LBA for test span 2
R/W
34-41
Starting LBA for test span 3
R/W
42-49
Ending LBA for test span 3
R/W
50-57
Starting LBA for test span 4
R/W
58-65
Ending LBA for test span 4
R/W
66-73
Starting LBA for test span 5
R/W
74-81
Ending LBA for test span 5
R/W
Cactus Technologies Limited
Commercial Grade -250SH Series SSD Product Manual
v2.1
25
