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SCSI Commands
5-224
Quantum DLT 8000 Tape System
WRITE BUFFER Command (3Bh) (continued)
Table 5–102 WRITE BUFFER Command Data — Field Descriptions (continued)
Field Name
Description
Buffer ID
For all of the modes described for the Mode field, only a Buffer ID of
0 is supported. If the Buffer ID field is a value other than 0, the
command is rejected. The target detects and rejects commands that
would overrun the buffer.
Buffer Offset
See Sections 5.32.1 through 5.32.4 for the appropriate settings.
5.32.1 Write Combined Header and Data Mode (000b)
The data to be transferred is preceded by a 4-byte header consisting entirely of reserved
bytes. This header is discarded (not stored within the buffer).
The buffer offset field must be 0 for this mode.
5.32.2 Write Data Mode (010b)
Similar to Header and Data Mode, except there is no header in the data passed to the
target. Any potential buffer overruns are detected and the command is rejected.
CAUTION
During the actual reprogramming of the FLASH EEPROM, if any type of powerfail
occurs, or if the reprogramming fails before completion, the tape drive subsystem
becomes unusable and the tape drive must be replaced.
5.32.3 Download Microcode Mode (100b)
Using buffer offsets, the host can download the firmware image into the target’s buffer
in pieces. These commands do not cause the new image to become active. A Download
and Save Mode WRITE BUFFER command must be issued for the image to become
active.
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...
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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...
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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...
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