Quantum DLT 4000 Manuel Page 158

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SCSI Commands
5-58 Quantum DLT 4000 Tape Drive
LOG SENSE Command (4Dh) (continued)
5.8.7 Device Status Page (3Eh)
The Device Status Page describes the current status of the tape drive. Three
parameters are defined in this page; each is four bytes in length.
Parameter Code Description
0000h Device Type (for sequential devices such as tape drives,
this value is always 00010000h)
0001h Device Cleaning-Related Status
0002h Number of “loads” over the life of the tape drive.
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved Page Code (3Eh)
1 Reserved
2 - 3
(MSB)
Page Length
(LSB)
Figure 5–26 Device Status LOG SENSE Header Format
Table 5–29 Device Status LOG SENSE Header Field Descriptions
Field Name Description
Page Code The Page Code echoes the page code that was specified in the
LOG SENSE command descriptor block.
Page Length The Page Length field specifies the number of bytes available
and depends on the parameters requested.
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