User's Guide

Chapter 2 Emulated Medium Changer SCSI Commands
Request Volume Element Address (B5h)
Quantum DX-Series Software Interface Guide 91
•Export Enable
The Export Enable field indicates whether the element can export a
tape cartridge from the DX-Series system. It is set to 1 (01h).
• Access
• An access bit value of 1 indicates access to the element by a
medium transport element is allowed
• This is set to 0 (0h) if the load port door is open
• Except
• When the element is in a normal state, it is set to 0
• When that element is in an abnormal state it 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 - for the meaning of the codes contained in the
2 Sense Code fields, see
Appendix A, Sense Key Values.
• Import Export
•The Import/Export field is set to 0 if the tape cartridge contained
in the element is placed there by the transfer mechanism
• It is set to 1 if the cartridge is placed there by an operator or if its
source is unknown (e.g., after power cycle)
•Full
•The Full field is set to 1 whenever the element contains a tape
cartridge
• It is set to 0 when the element contains no tape or the load port
door is open
• Additional Sense Code and Additional Sense Code Qualifier
These fields are only valid if the Exception field is set to one.
Currently the only valid values for these fields indicate:
• Element Contents Unknown condition (ASC=80 ASCQ=22)
• Cleaning Cartridge Installed (ASC=30 ASCQ=03)
• Operator Medium Removal Request (ASC=5A ASCQ=01).
• SValid
•The SValid bit is set to one if the information in the Source
Storage Element Address field is valid