We've found that we've got the same files as Tim, and can't back them up
with RoadRunner (Tivoli).  After reading the thread, I contacted DISC and
got this reply:

Our index files use file codes -410 and -411.
File code -410 is used to signify the Omnidex root file (the file containing
a note of what is indexed in your database) but this is named <DB>0A where
<DB> is the name of your database, e.g. SALES0A.
File code -411 is used to signify the Omnidex indexes, the naming convention
for these being <DB>0B ... <DB>0Z ... <DB>1A ... <DB>1Z, etc.
As you can appreciate there is nothing to stop anyone else using these file
codes so I suspect that the QR files may not be Omnidex related as it does
not match the naming convention of our Omnidex root file.

Although I still haven't found out what the files are, the Tivoli support
desk has a work around for the backup problem - EXCLUDE them from the
backup!!.

Steve McKee
Technical Specialist
Scottish Legal Aid Board