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5-80 Quantum DLT 7000 Tape System
MODE SELECT (6) / (10) Command (15h) / (55h) (continued)
5.9.5 Data Compression Page (0Fh)
The Data Compression page specifies parameters for the control of data
compression. This page allows the user to turn the tape drive’s compressed
format on and off independently of the tape medium’s position. Additionally, it
allows the user to enable or disable decompression of the tape drive compressed
data during WRITE operations.
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved Page Code (0Fh)
1 Page Length (0Eh)
2 DCE DCC (1) Reserved
3 DDE (1) RED (00) Reserved
4 - 7
(MSB)
Compression Algorithm (10)
(LSB)
8 - 11
(MSB)
Decompression Algorithm (10)
(LSB)
12 - 15 Reserved
Figure 5–40 Data Compression Page Format Descriptor - Data Format