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Quantum DLT 7000 Tape System 5-71
MODE SELECT (6) / (10) Command (15h) / (55h) (continued)
Table 5–38 MODE SELECT Mode Parameter Block Descriptor - Field Descriptions
Field Name Description
Density
Code
This field should match the current tape medium density; it is set to 0 if the density is
unknown.
Density Code
00h
0Ah
16h
17h
18h
19h
1Ah
1Bh
Description
Use default density.
6667 bpi MFM serial cartridge tape X3B5/86-199 (read only).
10000 bpi MFM serial cartridge tape X3.193-1990 (read only).
42500 bpi MFM serial cartridge tape X3B5/91- 2.6 GB (DLTtape III
only).
Same as 17h, but with 56 track pairs vs. 24 - 6.0 GB (DLTtape III
only).
62500 bpi, 64 track pairs, serial cartridge tape - 10.0 GB (DLTtape
III only) /15.0 GB (DLTtape IIIxt only)
81633 bpi, 64 track pairs, serial cartridge tape - 20.0 GB (DLTtape
IV only)
85937 bpi, 52 quad pairs, serial cartridge tape - 35.0 GB
The density codes above are the preferred codes used to define density.
Additionally, the following codes may be used, though use of the Data Compression
Page is preferred:
7Fh No change from previous density (No Operation)
80h 62500 bpi, 64 track pairs, serial cartridge tape - 10.0 GB (DLTtape III) /15.0
GB (DLTtape IIIxt) without compression
81h 62500 bpi, 64 track pairs, serial cartridge tape - 20.0 GB (DLTtape III) /30.0
GB (DLTtape IIIxt) with compression
82h 81633 bpi, 64 track pairs, serial cartridge tape - 20.0 GB (DLTtape IV)
without compression
83h 81633 bpi, 64 track pairs, serial cartridge tape - 40 GB (DLTtape IV) with
compression
84h 85937 bpi, 52 quad tracks, serial cartridge tape - 35 GB (without
compression)
85h 85937 bpi, 52 quad tracks, serial cartridge tape - 70 GB (with compression)