I deployed RocketChat on two different client installations (didn’t check the licensing you’re mentioning, I’ll have to look into that) and I run a Prosody instance (XMPP) on my own; tried Matrix for a short while and ran away from that mess as fast as I could. anyhow, although the messengers work without any significant issues or downtime, the amount of flak I get from non-tech normies about the client apps is staggering.

the apps just aren’t up to current UX standards. they’re used to Twitter and iMessage and Telegram quality UX, and getting used to these PoC-quality apps - both on mobile and desktop - makes them “feel icky”. I’ve had to intervene on a number of occasions when some of them transferred their business-related comms to other platforms because they just can’t/won’t get used to these apps.

regarding the pricy enclosures, there are vastly cheaper eGPU solutions especially if you’re able to utilise the on-board M.2 or mini-PCI slot. if you don’t move the laptop around, it’s a viable option. this would be an example - not an endorsment. you’d need a $15 PSU to power the graphics and it works well in linux, with the hotpluggability being the primary issue; if you’re willing to shutdown before attaching the eGPU, close to no issues.

you can run it as graphics card (i.e. utilize its display outputs) or just use the laptop’s display with optionally switching between the onboard and discrete graphics.

using rsync:

why not btrfs send | btrfs receive? is there some advantage to rsync?

did you hotswap the drives after each btrfs replace or shutdown and then swap?

what’s your host OS and do the drives spin down if inactive?

thanks for the writeup!

I’ve set up a local mail archive with just dovecot + imap plugin. you don’t need the full mail server with postfix and whatnot, as it’s not intended to send anything anywhere, or even receive anything for that matter. it just sits there ready to be searched with thunderbird, no need for other complex solutions you’ve mentioned.