Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
187
•DQue (Disable Queuing) bit set at zero specifies that tagged queuing shall be enabled if the Target supports tagged queu-
ing. A DQue bit set at one specifies that tagged queuing shall be disabled. Command queuing is always enabled on
the drive, therefore this bit is ignored.
• ATO (Application Tag Owner) bit set to one specifies that the contents of the Logical Block Application Tag field in the
protection information, if any, shall not be modified by the drive. An ATO bit set to zero specifies that the contents of
the Logical Block Application Tag field in the protection information, if any, may be modified by the drive. If the
ATO bit is set to zero, the drive will ignore the contents of the Logical Block Application Tag field in the protection
information.
•Busy Timeout Period is not supported and is ignored.
•Extended Self-test Routine Completion Time is an advisory parameter that an Initiator may use to determine the time
in seconds that the Target requires to complete self-test routine when the Target is not interrupted by an Initiator and
no errors occur during execution of the self-test routine.
19.10.10 Control Extension Subpage
Table 155:Control Extension Subpage
No fields in the Control Extension subpage are currently changeable. The page is supported for compatibility only.
10b Reserved
11b Blocked tasks in the task set belonging to the Initiator to which a Check Condition status is
sent shall be aborted when the status is sent.
CByte Bit Default
765432 10
0 PS SPF=1 Page Code = 0Ah 5Ah
1 Subpage Code = 1 01h
2-3 Page Length = 001Ch 001Ch
4 Reserved = 0 TCMOS SCSIP IALUAE 00h
5 Reserved = 0 Initial Priority 00h
6-31 Reserved = 0 00h