Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
177
18.10.9.2
Control Extension Subpage 02h
Table 144 Application Tag mode page:
Byte
Bit
7
6
5
4
3
2
1
0
0
PS
SPF=1
Page Code = 0Ah
1
Subpage Code = 02h
2-3
Page Length = n-4
4-15
Reserved = 0
16-39
Application Tag descriptor [first]
...
...
(n-24)-n
Application Tag descriptor [last]
Table 145 Application Tag descriptor format
Byte
Bit
7
6
5
4
3
2
1
0
0
Last
Reserved = 0
1-5
Reserved = 0
6-7
Logical Block Application Tag
8-15
Logical Block Address
16-23
Logical Block Count
- A LAST bit set to one specifies that this Application Tag descriptor is the last valid Application Tag descriptor in
the Application Tag mode page. A LAST bit set to zero specifies that the Application Tag descriptor is not the
last valid Application Tag descriptor in the Application Tag mode page.
- The LOGICAL BLOCK APPLICATION TAG field specifies the value to be compared with the LOGICAL LOCK
APPLICATION TAG field associated with data read or written to the LBA.
- The LOGICAL BLOCK ADDRESS field contains the starting LBA for this Application Tag descriptor. The
LOGICAL BLOCK ADDRESS field in the first Application Tag descriptor shall be set to
0000_0000_0000_0000h. For subsequent Application Tag descriptors, the contents of the LOGICAL BLOCK
ADDRESS field shall contain the sum of the values in:
a) The LOGICAL BLOCK ADDRESS field in the previous Application Tag descriptor; and
b) The LOGICAL BLOCK COUNT field in the previous Application Tag descriptor.
The sum of the LOGICAL BLOCK ADDRESS field in the Application Tag descriptor with the LAST bit set to one and
the LOGICAL BLOCK COUNT field in the Application Tag descriptor with the LAST bit set to one shall equal the
RETURNED LOGICAL BLOCK ADDRESS field in the READ CAPACITY (16) parameter data (see 18.23 “READ
CAPACITY (16)”).
If an invalid combination of the LAST bit, LOGICAL BLOCK APPLICATION TAG field, and LOGICAL BLOCK
ADDRESS field are sent by the application client, then the device server shall terminate the MODE SELECT
command(see SPC-4) with CHECK CONDITION status with the sense key set to ILLEGAL REQUEST and the