Quantum 7000DLT Series, Руководство по эксплуатации продукта

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SCSI Commands
Quantum DLT 7000 Tape System 5-105
MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)
Table 5–50 MODE SENSE Data Header - Field Descriptions
Field Name Description
Mode Sense Data
Length This field specifies the length (in bytes) of the MODE SENSE data that is
available to be transferred during the DATA IN phase. Note that the
Mode Sense Data Length does not include itself.
Media Type The media type is determined by the drive and can be one of the
following:
Media Type - Description
00h - Unknown or not present
81h - Cleaning tape
82h - DLTtape I or DLTtape II
83h - DLTtape III
84h - DLTtape IIIxt
85h - DLTtape IV
WP Write Protect. If 0, this field indicates that the tape is write-enabled. If set
to 1, it indicates that the tape is write-protected.
Buffered Mode This mode implements Immediate Reporting on WRITE commands via
the Buffered Mode.
If the field is 0, then the drive does not report a GOOD status on WRITE
commands until the data blocks are actually written to tape.
If the field is 1, then the drive reports GOOD status on WRITE commands
as soon as the data block has been transferred to the buffer. This is the
default configuration of the drive. Note that if Buffered Mode is not
used, the tape drive will suffer a degradation in performance, but not in
capacity.
Speed The tape drive supports only one speed. This is the default speed (0).
Block Descriptor Length This field specifies the length (in bytes) of all of the block descriptors.
Since the drive only supports one block descriptor, this value is 08h.