Check if you get big memory spikes when transferring, or OOM entries in dmesg.

Had some trouble with a new samba install on Debian causing OOM issues recently (this was admittedly in LXC). Resulted in files apparently transfered but were not. This was due to optimistic locks, which are apparently poorly implemented (according to the 2-year old open bug) but on by default. I haven’t done due diligence to say what’s the best solution, I just turned oplocks off.

https://bugzilla.samba.org/show_bug.cgi?id=15261

Seconded. Netdata has a generic and forgettable name but is powerful and easy to set up.

Open source, runs in docker or LXC. Web UI with more metrics than you will ever want, plus plugins. Support for alerts and some log aggregation, though I have not tried logging yet.

Who’s going to peer review that?

Guys you’re all wrong.

It’s PornHub.

Media failure isn’t the only reason to back up. If you delete a file on a RAID array, it’s gone on all disks. If you need to recover that deleted file, you can’t recover from RAID. The same goes for formatting/damage of the file system, recovery from something wrong inside a database, etc.

The Good Place, season 2.