IBM Ultrium Internal Tape Drive T200, Reference Manual

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The header is followed by one or more REPORT DENSITY SUPPORT descriptor
blocks with the format in Table 74.
Table 74. REPORT DENSITY SUPPORT Descriptor Block
7 6 5 4 3 2 1 0
0 Primary Density Code
1 Secondary Density Code
2 WRTOK DUP(0) DEFLT Reserved
3 Reserved
4 Reserved
5
:
7
Bits per mm
8
Media Width
9
10
Tracks
11
12
:
15
Capacity
16
:
23
Assigning Organization
24
:
31
Density Name
32
:
51
Description
56
Ultrium Internal Tape Drive and 3580 Ultrium Tape Drive: SCSI Reference