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ERASE Command (19h) SDLT 600 SCSI Interface Guide

4-10 January 2005 81-81200-02 REV A01

4.3 ERASE Command (19h)

The ERASE command erases the data on the tape medium. The SDLT tape drive erases the data only if

the Long bit is set to 1 and the drive receives the ERASE command while it is at Beginning of Tape

(BOT). If the Long bit is set to 0, this command has no effect on the tape medium.

NOTE: The time required to completely erase a Super DLTtape II cartridge is

more than 3 hours.

Figure 4-1. ERASE Command Descriptor Block — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 Operation Code (19h)

1 Reserved Immed Long

2 – 4 Reserved

5 Control

Table 4-6. ERASE Command Descriptor Block — Field Descriptions

Field Description

Immed Immediate. If set to 0, the drive does not return status until the selected operation

has completed. If set to 1, the drive returns status as soon as it initiates the

operation.

Long Must be set to 1 to perform an erase operation. Issuing an ERASE command when

the tape is not at BOT is an ILLEGAL REQUEST. If set to 0, the drive performs no

operation—the ERASE command does not affect the tape.

SDLT 600

SCSI Interface Guide

SCSI Commands

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