Quantum DAT 24 Drive Guia do Utilizador descarregar pdf (Página 128)

Page 116 DDS-4 SCSI Interface Manual, Rev. B

Byte

Bits

7 6 5 4 3 2 1 0

0 Element Type Code

1 0 0 0 0 0 0 0 0

2 MSB Element Descriptor Length

3 LSB Element Descriptor Length

4 0 0 0 0 0 0 0 0

5 MSB—Byte Count of Descriptor Available

6 Byte Count of Descriptor Available

7 Byte Count of Descriptor Available—LSB

8 Element Descriptor

n Element Descriptor

The element type code field indicates the element type reported in this field. The

following table defines the element type codes.

Code Element Type Number of Descriptors

01h Medium Transport (changer) 1

02h Storage 6

04h Data Transfer (drive) 1

The byte count of descriptor data available field indicates the number of bytes of

element descriptor data available for elements of this element type meeting the

request in the CDB. This value is not adjusted to match the allocation length

available.

If the magazine is not mounted, both Medium Transport Element Type Page and the

Storage Element Type Page are not returned.

Medium Transport Element (Changer) Descriptor

The Autoloader has only one medium transport element (the changer). The following

table shows the medium transport element descriptor.

Byte

Bits

7 6 5 4 3 2 1 0

0 0 0 0 0 0 0 0 0

1 0 0 0 0 0 0 0 0

2 0 0 0 0 0 0 0 0

3 0 0 0 0 0 0 0 0

4 0 0 0 0 0 0 0 0

5 0 0 0 0 0 0 0 0

6 0 0 0 0 0 0 0 0

7 0 0 0 0 0 0 0 0

8 0 0 0 0 0 0 0 0

9 0 0 0 0 0 0 0 0

10 0 0 0 0 0 0 0 0

11 0 0 0 0 0 0 0 0

1 2 ... 123 124 125 126 127 128 129 130 131 132 133 ... 180 181

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Quantum DAT 24 Drive Guia do Utilizador Página 128

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