Table 4-41. Mode Sense (6/10) Block Descriptor - Field Descriptions - Quantum DLT 1 Interface Manual

Chapter 4: SCSI Commands
Table 4-41. MODE SENSE (6/10) Block Descriptor — Field Descriptions
Field Name
Density Code
Number of Blocks
Block Length
4-72
Description
This field matches the current density of the media, or 0 if the density is unknown.
Density Code
00h
1Ah
40h
82h
83h
86h
87h
This field is sent as 0, indicating that all of the remaining logical blocks on the
medium have the medium characteristics specified by the block descriptor.
This 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 used for
READ, WRITE, and VERIFY type commands that specify a "Fixed" bit of 1
(Fixed Block Mode).
July 2004
Description
Use default density
DLT 4000 format, 20 GB (READ-ONLY)
DLT1 format, DLTtape IV – 40 GB
DLT 4000 format, 20 GB without compression
(READ-ONLY)
DLT 4000 format, 40 GB with compression (READ-
ONLY)
DLT1 format, DLTtape IV – 40 GB without
compression
DLT1 format, DLTtape IV – 80 GB with compression
81-81276-01 Rev A01