Quantum 1200 Series DAT Autochanger Guía de usuario descargar pdf (Pagina 66)

INQUIRY Command (12h) SDLT 600 SCSI Interface Guide

4-24 January 2005 81-81200-02 REV A01

Logical Unit NAA Identifier

Figure 4-9 shows the format of the Logical Unit NAA Identifier.

Figure 4-9. Logical Unit NAA Identifier — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 Protocol Identifier Code Set (1)

1 PIV (0) Rsv’d Association (0) Identifier Type (3h)

2 Reserved

3 Identifier Length (08h)

4 – 11

(MSB)

NAA Identifier (binary)

(LSB)

Table 4-13. Logical Unit NAA Identifier — Field Descriptions

Field Name Description

Protocol

Identifier

Set to 0.

Code Set Indicates the type of data found in the Identifier field. Set to 1h, indicating

binary data.

PIV Protocol Identifier Valid. Set to 0, indicating that the value returned in the

Protocol Identifier field should be ignored.

Association Set to 0, indicating that the Identifier is associated with the logical unit.

Identifier Type Type of identifier.

Value Description

3h NAA identifier

Identifier

Length

Specifies the length in bytes of the Identifier field. If the Allocation Length

field of the CDB is too small to transfer the entire identifier, the Identifier

Length value is not adjusted to reflect the truncation.

NAA Identifier Contains the Name Address Authority (NAA) identifier for the logical unit.

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 293 294

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Quantum 1200 Series DAT Autochanger Guía de usuario Pagina 66