User's Guide

Chapter 2 Emulated Medium Changer SCSI Commands
Read Element Status (B8h)
66 Quantum DX-Series Software Interface Guide
• Information on the abnormal state is available in the Additional
Sense Code and Additional Sense Code Qualifier fields in that
element descriptor.
Appendix A, Sense Key Values for the
meaning of the codes contained in the two Sense Code fields
• Import Export
•The Import/Export field is set to 0 if the tape cartridge contained
in the element was placed there by the transfer mechanism
• It is set to 1 if the tape was 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 1. 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 1 if the information in the Source Storage
Element Address field is valid
• If the information is unknown, the SValid bit is set to 0
•Invert
The Invert field is not supported and is set to 0.
• Source Storage Element Address
The Source Storage Element Address represents the address of the
last storage element that held the cartridge. The SValid field indicates
if this information is valid.
The format of an element descriptor for an element of the data transfer
element type is shown in
table 46.