Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
158
18.10.1.3
Page Descriptor
Table 133 Mode Parameter Page Format
Byte 0
PS
SPF
Page Code
Byte 1
Page Length
Byte 2-n
Mode Parameters
Each mode page contains a page code, a page length, and a set of mode parameters.
When using the MODE SENSE command, a Parameter Savable (PS) bit of one indicates that the mode page can be
saved by the drive in the reserved area of the drive. A PS bit of zero indicates that the supported parameters cannot
be saved. When using the MODE SELECT command, the PS bit is reserved (zero).
SPF (Sub-Page Format) is set to zero to indicate the short page format is used. The bit is set to one to indicate the
long format is used, supporting sub-pages. The drive supports the following mode page codes:
Table 134 Mode Parameter Page Format
Page
Description
PS
00
Vendor Unique Parameters
1
01
Read-Write Error Recovery Parameters
1
02
Disconnect/Reconnect Control Parameters
1
03
Format Device Parameters
0
04
Rigid Disk Geometry Parameters
0
07
Verify Error Recovery Parameters
1
08
Caching Parameters
1
0A
Control Mode Page
1
0C
Notch Parameters
1
19
Port Control Page
1
1A
Power Control Parameters
1
1C
Informational Exceptions Control
1
The page length field specifies the length in bytes of the mode parameters that follow. If the Initiator does not set this
value to the value that is returned for the page by the MODE SENSE command, the drive will terminate the
command with Check Condition status.