Messages
Quantum DLT 8000 Tape System
4-9
4.2.7 INITIATOR DETECTED ERROR Message (05h)
The INITIATOR DETECTED ERROR message is sent from an initiator to inform the
drive that an error has occurred that does not preclude the drive from retrying the
operation (a bus parity error, for example). The source of the error may either be related
to previous activities on the SCSI bus or may be only drive-related. When received, the
tape drive attempts to re-transfer the last command, data, or status bytes by using the
RESTORE POINTER message mechanism.
The drive’s response to and its handling of an INITIATOR DETECTED ERROR message
are based on when, in the I/O process, the initiator introduces the message. Table 4–7
summarizes the drive’s response.
Table 4–7 Drive Response to INITIATOR DETECTED ERROR Message
BUS Phase
Drive Response
SELECTION
The drive discards the INITIATOR DETECTED ERROR message and then goes
to the BUS FREE phase.
COMMAND
The drive discards any Command Descriptor Block bytes fetched from the
initiator, sets the Sense Key to ABORTED COMMAND, sets the Additional
Sense Code to INITIATOR DETECTED ERROR MESSAGE RECEIVED. It sends
the CHECK CONDITION status and the COMMAND COMPLETE message and
then goes to the BUS FREE phase.
DATA
The drive discards the INITIATOR DETECTED ERROR message and sets the
Sense Key to ABORTED COMMAND, sets the Additional Sense Code to
INITIATOR DETECTED ERROR MESSAGE RECEIVED. It sends the CHECK
CONDITION status and the COMMAND COMPLETE message and then goes
to the BUS FREE phase.
STATUS
The drive sends a RESTORE POINTERS message, returns to the STATUS
phase, resends the STATUS command, and continues the I/O process.
MESSAGE IN
The drive discards the INITIATOR DETECTED ERROR message and sets the
Sense Key to ABORTED COMMAND, sets the Additional Sense Code to
INITIATOR DETECTED ERROR MESSAGE RECEIVED. It sends the CHECK
CONDITION status and the COMMAND COMPLETE message and then goes
to the BUS FREE phase.
Summary of Contents for DLTtape DLT 8000
Page 1: ...DLTTM 8000 Tape System Product Manual Nov 10 2003 81 60118 06...
Page 5: ...USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT continued...
Page 6: ......
Page 26: ...Table of Contents xxiv Quantum DLT 8000 Tape System...
Page 36: ...About This Manual Quantum DLT 8000 Tape System xxxii...
Page 54: ...General Description and Specifications 1 18 Quantum DLT 8000 Tape System...
Page 102: ......
Page 372: ......
Page 376: ...Appendix A Definition of Vendor Unique Sense Data Information A 4 Quantum DLT 8000 Tape System...
Page 386: ...Appendix C Updating the Firmware C 6 Quantum DLT 8000 Tape System...
Page 396: ...Appendix E Visual Inspection Procedure for DLTtape Cartridges E 8 Quantum DLT 8000 Tape System...
Page 406: ...Appendix G DLT 7000 Emulation Feature G 8 Quantum DLT 8000 Tape System...
Page 407: ......