Table 97 Log Address Definition - Hitachi HDS723020BLA642 Specifications

Output Parameters To The Device
Feature
Sector Count Current
Sector Count Previous
Sector Number Current
Cylinder Low Current
Cylinder Low Previous
Log address Content
00h Log directory
03h Extended Comprehensive SMART error log
06h SMART self-test log
07h Extended SMART self-test log
08h Power Conditions log
10h Command Error
11h Phy Event Counters
20h Streaming Performance log
21h Write Stream Error log
22h Read Stream Error 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.
Note: Please see 9.17.3 about Phy Event Counter.

Table 97 Log Address Definition

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
command aborted.
Log Address Specific
The number of sectors to be read from the specified log low order, bits (7:0).
The log transferred by the drive shall start at the sector in the specified log at the
specified offset, regardless of the sector count requested.
The number of sectors to be read from the specified log high orders, bits (15:8).
The log to be returned as described in 0.
The first sector of the log to be read low order, bits (7:0).
The first sector of the log to be read high order, bits (15:8).
Hitachi hard disk drive specifications
Feature set
N/A
SMART error logging
SMART self-test
SMART self-test
Extended Power Condition
Native Command Queuing
Serial ATA
Streaming
Streaming
Streaming
SMART
149
Type
Read Only
Read Only
See Note
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read/Write