Quantum DLT 8000 Product Manual page 257

MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)
Table 5–50 MODE SENSE Block Descriptor — Field Descriptions (continued)
Field Name
Number of Blocks
Block Length
Description
This field is sent as 0, indicating that all of the remaining logical
blocks on the tape have the medium characteristics specified by the
block descriptor.
This field specifies the length (in bytes) of each logical block
transferred over the SCSI bus. A block length of 0 indicates that the
length is variable (as specified in the I/O command). Any other value
indicates the number of bytes per block that are used for READ,
WRITE, and VERIFY type commands that specify a fixed bit of 1 (fixed
block mode).
Quantum DLT 8000 Tape System
SCSI Commands
5-113