[Xymon] I just can't figure out a data channel feed

I'm trying to write a data collector to deliver data to Xymon through the data channel. From my reading, it should be as simple as (from *xymoncmd*):

$XYMON --merge $XYMSRV "data $MACHINE.mytest" <<EOD x:3 y:7 EOD

But I can't find a corresponding *mytest.rrd* file on my server.

I haven't found any documentation that indicates I need to prepare the server to receive the new data feed, nor that the collector must be run from *xymonlauncher*. I'd like to prove the script before I attempt to add it as a client task.

Help?

-- *Steve Coile *Senior Network and Systems Engineer, McClatchy Interactive<http://www.mcclatchyinteractive.com/> Office: 919-861-1247 | Mobile: 919-622-5369 | Fax: 919-861-1300