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READ ATTRIBUTE Command (8Ch) SDLT 600 SCSI Interface Guide
4-156 January 2005 81-81200-02 REV A01
4.15 READ ATTRIBUTE Command (8Ch)
The READ ATTRIBUTE command (see Figure 4-84) allows an application client to read attribute
values from Enhanced Medium Auxiliary Memory (EMAM).
Figure 4-84. READ ATTRIBUTE Command Descriptor Block — Data Format
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation Code (8Ch)
1 Reserved Service Action
2 – 4 Restricted (00h)
5 Volume Number
6 Reserved
7 Partition Number
8 – 9
(MSB)
First Attribute Identifier
(LSB)
10 – 13
(MSB)
Allocation Length
(LSB)
14 Reserved
15 Control
Table 4-89. READ ATTRIBUTE Parameter Data — Field Descriptions
Field
Name
Description
Service
Action
See “READ ATTRIBUTE Service Action Codes” on page 4-158.
Volume
Number
Specifies a volume within the medium auxiliary memory. Must be set to 0.
Super DLTtape media comprises a single volume.
Partition
Number
Specifies a partition within a volume. Must be set to 0. Super DLTtape media
comprises a single partition.
SDLT 600
SCSI Interface Guide
SCSI Commands
81-81200-02
REV A01
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