ØHow can i find out what's been corrupting jrb files?
I would look for one of the rrd utilities, by example to export rrd data, and check if they return some usable error code
when they open a corrupted file.
Øcould it be a hardware problem (i've been using a 6 * SSD RAID 1+0) ?
In about ten years of using different opennms versions on different *x-systems I never observed this problem, even with "classical"
disks when they had block errors. So yes, it might be some hardware error, but I really don't know.