SCSI Commands

MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)

Table 5–51 MODE SENSE Block Descriptor - Field Descriptions

Field Name

Description

 

 

 

Density Code

The contents of this field match the density of the media, or 0 if the density is

 

unknown:

 

 

Density Code

Description

 

00h

Use default density.

 

0Ah

6667 bpi MFM serial cartridge tape X3B5/86-199 (read only).

 

16h

10000 bpi MFM serial cartridge tape X3.193-1990 (read only).

 

17h

42500 bpi MFM serial cartridge tape X3B5/91- 2.6 GB (DLTtape III

 

 

only).

 

18h

Same as 17h, but with 56 track pairs vs. 24 - 6.0 GB (DLTtape III

 

 

only).

 

19h

62500 bpi, 64 track pairs, serial cartridge tape - 10.0 GB (DLTtape

 

 

III only) /15.0 GB (DLTtape IIIxt only)

 

1Ah

81633 bpi, 64 track pairs, serial cartridge tape - 20.0 GB (DLTtape

 

 

IV only)

 

1Bh

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 codes listed below may be used, though use of the Data

 

Compression Page is preferred (these codes are only returned if they were set using

 

the MODE SELECT command; note that the codes may be different than the code

 

set using MODE SELECT if the selection was made while the tape was not at BOT):

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

Quantum DLT 7000 Tape System

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Quantum Instruments DLT 7000 manual Mode Sense Block Descriptor Field Descriptions

DLT 7000 specifications

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