Reference Guide

Chapter 4 SCSI Commands
RELEASE UNIT Command (17h)
DLT-S4 Interface Reference Guide 281
Table 155 RELEASE UNIT
Command — Field Descriptions
Field Description
3rdPty The third-party release option for
RELEASE UNIT allows an initiator to release a logical
unit that was previously reserved using the third-party reservation option. When set to 0,
the third-party release option is not requested. When set to 1, the drive is released if the
same initiator originally reserved it using the third-party reservation option and if the
drive is the same SCSI device specified in the Third Party Device ID field.
Third Party
Device ID
Required if 3rdPty is set to 1. This field specifies the SCSI ID of the initiator whose third-
party reservation is being released. This field must be used if the initiator of the original
third-party
RESERVE is the source of the RELEASE.