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101

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.

1 2 ... 153 154 155 156 157 158 159 160 161 162 163 ... 299 300

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