User's Guide

Chapter 2 Emulated Medium Changer SCSI Commands
Read Element Status (B8h)
68 Quantum DX-Series Software Interface Guide
• Access
An access bit value of 1 indicates access to the element by a medium
transport element is allowed.
• Except
• When the element is in a normal state, field is set to 0
• When the element is in an abnormal state, field is set to 1
• Information on the abnormal state is available in the Additional
Sense Code and Additional Sense Code Qualifier fields in that
element descriptor -
Sense Key Values on page 295 for the
meaning of the codes contained in the two Sense Code fields
•Full
•The Full field is set to 1 whenever the element contains a tape
cartridge
• It is set to 0 otherwise
• Additional Sense Code and Additional Sense Code Qualifier
These fields are only valid if the Exception field is set to 1. Currently
the only valid values for these fields indicate:
• Element Contents Unknown condition (ASC=80 ASCQ=22)
• Tape Drive Requires Cleaning (ASC=80 ASCQ=01)
• Cleaning Cartridge Installed (ASC=30 ASCQ=03)
• Any tape drive error (ASC=8D or ASC=F3)
•Not Bus
This field is sent as 0. The data transfer element is on the same bus as
the media changer device.
•ID Valid
When set to 1, it indicates that the SCSI BUS address field contains
valid information.
• LU Valid
When set to 1, it indicates that the Logical Unit Number field contains
valid information.
• SCSI Bus Address
If valid, it provides the SCSI address of the primary device served by
the media changer at this element address.