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12.21.14.1.4 DEVICE INTERNAL STATUS DATA AREA 2 LAST LOG PAGE field
The DEVICE INTERNAL STATUS DATA AREA 2 LAST LOG PAGE field contains the value of the last page of Device
Internal Status data area 2 within the Device Internal Status data pages.
The value in the DEVICE INTERNAL STATUS DATA AREA 2 LAST LOG PAGE field shall be greater than or equal
to the value in the DEVICE INTERNAL STATUS DATA AREA 1 LAST LOG PAGE field. If the DEVICE INTERNAL
STATUS DATA AREA 2 LAST LOG PAGE field is not cleared to zero, then the Device Internal Status data area 2
begins at page one; and ends at the page indicated in DEVICE INTERNAL STATUS DATA AREA 2 LAST LOG PAGE
field.
12.21.14.1.5
DEVICE INTERNAL STATUS DATA AREA 3 LAST
LOG PAGE field
The DEVICE INTERNAL STATUS DATA AREA 3 LAST LOG PAGE field contains the value of the last page of Device
Internal Status data area 3 within the Device Internal Status data pages.
The value in the DEVICE INTERNAL STATUS DATA AREA 3 LAST LOG PAGE field shall be greater than or equal
to the value in the INTERNAL STATUS DATA AREA 2 LAST LOG PAGE field. If the DEVICE INTERNAL STATUS
DATA AREA 3 LAST LOG PAGE field is not cleared to zero, then the Device Internal Status data area 3 begins at
page one; and ends at the page indicated in DEVICE INTERNAL STATUS DATA AREA 3 LAST LOG PAGE field.
12.21.14.1.6
SAVED DATA AVAILABLE field
If the Saved Device Internal Status Data log is supported, the SAVED DATA AVAILABLE field shall contain the value
of the SAVED DATA AVAILABLE field in the Saved Device Internal Status Data log. If the Saved Device Internal
Status Data log is not supported, the SAVED DATA AVAILABLE field shall be reserved.
12.21.14.1.7
SAVED DATA GENERATION NUMBER field
If the Saved Device Internal Status Data log is supported, the SAVED DATA GENERATION NUMBER field shall
contain the value of the SAVED DATA GENERATION NUMBER field in the Saved Device Internal Status Data log.
If the Save Device Internal Status Data log is not supported, the SAVED DATA GENERATION NUMBER field shall
be reserved.
12.21.14.1.8
REASON IDENTIFIER field
The REASON IDENTIFIER field contains a vendor specific identifier that describes the operating conditions of the
device at the time of capture. The REASON IDENTIFIER field should provide an identification of different unique
operating conditions of the device.
12.21.14.2 Current Device Internal Status data pages
The Current Device Internal Status Data log pages shall represent the device internal state.
Table 154 Current Device Internal Status Data header (pages 1..n)
Offset
Type
Description
0..511
Bytes
Vendor Specific
12.21.15
Saved Device Internal Status Data log (log page 25h)
The Saved Device Internal Status Data Log consists of the Saved Device Internal Status Data header page (i.e., log
page 0); and zero or more Saved Device Internal Status Data pages (i.e., log pages 1..n). The saved device internal
status data in the Saved Device Internal Status Data log is a device initiated capture of the device internal state. The
contents of the Saved Device Internal Status Data log shall persist across all resets. The saved device internal status
data log consists of three areas.
220
Hard Disk Drive Specification