I'm using 1984 [1]. I'm writing a blog post on this soon [2], but in short I use Ubuntu Server LVM [3], unlock my system via Dropbear SSH (a very small SSH client)[4] and did move the entry point of incoming data to another server which will store the incoming data only when the main server is down. This is because I want to keep recording incoming data and my encrypted server can't boot without me entering a password. So in case of a power failure the data of my customers will still be recorded.

[1] https://1984.is

[2] https://blog.simpleanalytics.io

[3] https://en.wikipedia.org/wiki/Logical_Volume_Manager_%28Linu...

[4] https://matt.ucc.asn.au/dropbear/dropbear.html