We use Expensify and everyone is pretty happy with it.

why are you attacking it?...

Check the app store for new updates. There's an update available to fix this one.

Same OVH that went down today, because they lost power and none of their generators (if they had any) powered on?...

@wrx7m
No reason. It will work just fine.

@shuey
Don't buy new. Buy Dell refurb from xbyte

Also it's RAID1, not RAID10 if there are only 2 drives involved.

Is it worth such a hassle?..
Servers and storage are so cheap these days. Why bother with old hardware (and software as in your case...).

Depends on the things you want to monitor and the simplicity. Lots of solutions.
It can be anything as easy to set-up as PRTG (free for up to 100 monitors) or a little bit more (a lot more actually...) involved as nagios.

If it's really because of the signal strength - get a Ubiquiti and forget about it.