'Unrecognized Option' usually means that your version of Media agent is not the same version of DP as the Cell Manager. AN older version of BMA is sending options to the cell manager that it doesn't recognize
On your Cell manager, run
cd \Program Files\omniback\bin
bsm -ver
and, on the media agent
bma -ver
These should return identical values
This error
" illegal arguments in request"
may also be the result of what version of Data Protector that you are running. I found a couple of lab cases where thsi was caused by having a Invalid or Unreachable volume on a NetApps NAS, which caused the backup to fail. The correct behavior would be to skip the Invalid volume with a Warning instead of a Major error
It looks like this was fixed with a Media Agent patch for DP 6.11
I also found for DP 6.2, that this could be caused by dumping the catalog to the Internal Database, in this case, over 5 million files were on the NAS. Depending on your version of Data Protector, you can add this to your 'omnirc' file on your Media Agent
OB2NDMPMEMONLY=0
and save the file. If you are unfamiliar with the 'omnirc' file, it does not exist by default. You can open a blank Notepad, add the line and save the file as
Program Files -> Omniback -> omnirc Windows 2003
or
ProgramData -> Omniback -> omnirc Windows 2008
Make sure that the filename has no extension, like 'txt' or 'tmpl'. You must stop, and restart the Data Protector INET service on Windows servers after editing the 'omnirc' file
I had written a few Tech Tips that referenced how to work with 'omnirc'. Also, from your GUI, click on Help -> Help Topics, and search for 'omnirc', this will give you much more information