General Purpose Log Directory; Extended Comprehensive Smart Error Log - Hitachi T7K250 - Deskstar - Hard Drive Specifications

Table 90: Log Address Definition
Log Address
00h Log directory
03h Extended Comprehensive SMART error log SMART error logging
06h SMART self-test log
07h Extended SMART self-test log
80h-9Fh Host vendor specific
Note: If log address 06h is accessed using the Read Log Ext or Write Log Ext commands, command abort shall be
returned.
The Extended SMART self-test log sector shall support 48-bit and 28-bit addressing. All 28-bit entries contained in
the SMART self-test log sector shall also be included in the Comprehensive SMART self-test log sector with the
48-bit entries.
If the feature set associated with the log specified in the Sector Number register is not supported or enabled, or if
the values in the Sector Count, Sector Number or Cylinder Low registers are invalid, the device shall return com-
mand aborted.

12.18.1 General Purpose Log Directory

The figure below defines the 512 bytes that make up the General Purpose Log Directory.
Table 91: General Purpose Log Directory
General purpose logging version
Number of sectors in the log at log address 01h (7:0)
Number of sectors in the log at log address 01h (15:8)
Number of sectors in the log at log address 01h (7:0)
Number of sectors in the log at log address 01h (15:8)
...
10h sectors in the log at log address 80h (7:0)
00h of sectors in the log at log address 80h (7:0)
...
Number of sectors in the log at log address FFh (7:0)
Number of sectors in the log at log address FFh (15:8)
The value of the General Purpose Logging Version word shall be 0001h. A value of 0000h indicates that there is no
General Purpose Log Directory.
The logs at log addresses 80-9Fh shall each be defined as 16 sectors long.
Content
Description
Deskstar T7K250 Hard Disk Drive Specification
150
Feature set
N/A
SMART self-test
SMART self-test
SMART
Bytes
2
1
1
1
1
1
1
1
1
512
Type
Read Only
Ready Only
See Note
Read Only
Read/Write
Offset
00h
02h
03h
04h
05h
100h
101h
1FEh
1FEh