Hitachi HUS154530VLF400 User Manual

                   

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.

No fields in the Control Extension subpage are currently changeable.  The page is supported for compatibility only.

 

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.