Scsi Status Byte - IBM Ultrastar 36LZX Specifications

9.0 SCSI Status Byte

Upon the completion of a command a status byte is sent to the initiator. Additional sense information
may also be available depending on the contents of the status byte. The following section describes the
possible values for the status byte and sense data. All Reserved fields (R) are set to zero.
7 6
Reserved = 0
Figure 165. SCSI Status Byte. Format of the SCSI STATUS byte.
STATUS BYTE Description
00h GOOD
The command has been successfully completed.
02h CHECK CONDITION
An error, exception, or abnormal condition has been detected. The sense data is set
by the drive. The REQUEST SENSE command should be issued to determine the
nature of the condition.
08h BUSY
This condition is returned when disconnect privilege is not granted while the drive is
BUSY processing the other command for the other initiator. The normal initiator
recovery action is to issue the command at a later time or to reissue the command
and grant the disconnect privilege.
10h INTERMEDIATE/GOOD
This status is returned for every command in a series of linked commands (except
the last command), unless an error, exception, or abnormal condition causes a
CHECK CONDITION status or a RESERVATION CONFLICT status to be set. If this
status is not returned, the chain of linked commands is broken and no further com-
mands in the series are executed.
18h RESERVATION CONFLICT
This status is returned whenever an SCSI device attempts to access the drive, but it
has been reserved by another initiator. (See RESERVE (16) on page 164.)
28h QUEUE FULL
This status indicates that the target's command queue is full. If a tagged command
queuing feature is enabled and there is no room on the command queue, this status
is returned when the initiator sends a command. For this status sense is not valid.
Bit
5 4 3
Status Code
Ultrastar 36LZX hard disk drive specifications
2 1 0
RSVD
189