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SDLT 600 SCSI Interface Guide Chapter 4: SCSI Commands

81-81200-02 REV A01 January 2005 4-21

Device Identification Page (83h)

Figure 4-7 shows the format of the Device Identification page the drive returns.

Figure 4-7. Device Identification Page — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 Peripheral Qualifier Peripheral Device Type

1 Page Code (83h)

2 Reserved

3 Page Length

4 – n Identification Descriptors

Table 4-11. Device Identification Page — Field Descriptions

Field Name Description

Peripheral

Qualifier

Contains 000b if the command is directed to a valid device. Contains 011b if

there is no device at the selected LUN.

Peripheral

Device Type

Contains 01h if the LUN is 0h, 8h if the LUN selects an attached library, or

1Fh if there is no device at the selected LUN.

Page Code A value of 83h identifies this as the Device Identification page.

Page Length Indicates the size of the returned Device Identification page.

Identification

Descriptors

The drive always returns the Vendor-unique Logical Unit Identifier and the

Logical Unit NAA Identifier. It may also return other identifiers. The

following identifiers are described in this section:

• Vendor-unique Logical Unit Identifier

• Logical Unit NAA Identifier

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 293 294

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Quantum 1200 Series DAT Autochanger Podręcznik Użytkownika Strona 63