Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
174
18.10.9
Mode Page 0A (Control Mode Page Parameters)
Table 142 Page 0A (Control Mode Page Parameters)
Byte
Bit
Default
7
6
5
4
3
2
1
0
0
PS 0 Page Code = 0Ah
8Ah
1
Page Length = 0Ah
0Ah
2
TST=0 TMFonly=0 DPICZ D_Sense GLTSD=0 RLEC=0 00h
3
Queue Algorithm Modifier
RSVD=0
QErr
DQue
00h
4
RSVD=0
RAC=0
UA_INTLCK_CTRL=0
SWP=0
Obsolete
00h
5
ATO TAS=0 ATMPE RWWP RSVD=0
00h
6-7
Obsolete=0
00h
8-9
(MSB) Busy Timeout Period(LSB)
00h
10-11
(MSB)Extended Self-test Routine Completion Time(LSB)
XXh
Following are parameter options for Page 0A.
- DPICZ, Disable Protection Information Check if protect field is Zero, bit set to zero indicates that checking of
protection information bytes is enabled. A DPICZ bit set to one indicates that checking of protection
information is disabled on commands with:
- The RDPROTECT field (see SBC-3) set to zero;
- The VRPROTECT field (see SBC-3) set to zero; or
- The ORPROTECT field (see SBC-3) set to zero.
- D_Sense, Descriptor Sense Data, bit controls the format in which the drive returns sense data for
CHECK_CONDITION status:
- Setting the D_SENSE bit to 0 specifies that the drive shall return fixed format sense data for
CHECK_CONDITION.
- Setting the D_SENSE bit to 1 specifies that the drive shall return descriptor format sense data for
CHECK_CONDITION
- Queue Algorithm Modifier specifies restrictions on the algorithm used for reordering commands that are
tagged with the SIMPLE message.
- 0h: Restricted reordering. The Target shall reorder the actual execution sequence of the queued
commands from each Initiator such that data integrity is maintained for that Initiator.
- 1h: Unrestricted reordering allowed. The Target may reorder the actual execution sequence of the
queued commands in any manner it selects. Any data integrity exposures related to command
sequence order are explicitly handled by the Initiator through the selection of appropriate commands
and queue tag messages.
- 2h-7h: RESERVED.
- 8: Command reordering is disabled
- 9-Fh: RESERVED
- QErr (Queue Error Management) The queue error management (QERR) field specifies how the device
server shall handle blocked tasks when another task receives a Check Condition status.
- 00b: Specifies that all tasks from all Initiators are blocked from execution when a Continent