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SCSI Commands
Quantum DLT 7000 Tape System
5-171
WRITE BUFFER Command (3Bh) (continued)
Table 5–83 WRITE BUFFER Command Data - Field Descriptions
Field Name
Description
Mode
The tape drive supports the following values within the field. If any other value is
set, the drive terminates the command with CHECK CONDITION status and an
ILLEGAL REQUEST sense key set.
Mode
Description
000b
WRITE combined header and data (Section 5.26.1)
010b
WRITE data (Section 5.26.2)
100b
Download Microcode (Section 5.26.3)
101b
Download Microcode and Save (Section 5.26.4)
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 5.26.1 through 5.26.4 for the appropriate settings.
5.26.1 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.
5.26.2 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.
Summary of Contents for 7000DLT Series
Page 1: ...DLT 7000 Tape System Product Manual November 10 2003 81 60000 06...
Page 5: ...USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT continued...
Page 6: ......
Page 38: ...General Description and Specifications 1 14 Quantum DLT 7000 Tape System...
Page 292: ...Appendix C Updating the Firmware C 6 Quantum DLT 7000 Tape System...
Page 310: ...Index Index 6 Quantum DLT 7000 Tape Drive...
Page 311: ......