Quantum DLT 4000 Handbuch PDF herunterladen (Seite 131)

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101

SCSI Commands

Quantum DLT 4000 Tape Drive 5-31

LOCATE Command (2Bh) (continued)

Table 5–15 LOCATE Command Descriptor Block - Field Descriptions

Field Name Description

BT Block Type. The Block Type bit indicates how the Block Address field is

interpreted. The first recorded object (block or filemark) is at address 0, and

Block Addresses count both data blocks and filemarks.

CP Change Partition. Since multiple partitions are not supported, this bit must be set

to 0.

Immed Immediate. If this bit is set to 1, status is returned as soon as the operation is

started. If set to 0, status is returned after the operation has completed.

Block Address The Block Address field defines the SCSI Logical Block Address to which the

media will be positioned. These addresses start at address 0 and include data

blocks and filemarks. They could also be considered an object address.

Partition Not applicable (see Change Partition field above).

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