User's Guide
Appendix A Sense Key Values
280 Quantum DX-Series Software Interface Guide
3h MEDIUM ERROR. An unrecoverable AWRITE, READ, or positioning error has 
occurred. Detailed device-specific information may be available.
4h HARDWARE ERROR. The Additional Sense Code/Additional Sense Code Qualifier 
fields may present more specific information.
5h ILLEGAL REQUEST. The Command Descriptor Block or supplied parameter data 
had an unsupported or illegal operation specified. Check bytes 15, 16, and 17.
6h
UNIT ATTENTION. Unit Attentions are created after a device reset, if the medium asyn-
chronously becomes ready to the initiator, if another initiator changes Mode Parameters, 
and/or if the firmware is updated.
7h DATA PROTECTED. The current tape medium is write-protected. This can be 
because the Write Protect switch on the cartridge is in its enabled position or if the 
tape medium is not the appropriate type, or if a software write protect is issued.
8h BLANK CHECK. An End of Data or LongGap has been encountered.
Bh COMMAND ABORTED. This key is generated when a command has been aborted by 
the tape drive for some reason. Check the Additional Sense Code/Additional Sense 
Code Qualifier bytes.
Dh VOLUME OVERFLOW. This key indicates that the physical end of tape medium has 
been reached during writing. The initiator ignored the End of Medium condition and 
continued to write to tape.
Sense 
Key Message Name/Description










