The recommended OS for operating a storagenode seem to be quite out of date :
CentOS - A maintained version of CentOS 7
Debian - 64-bit version of one of these Debian or Raspbian versions:
- Buster 10
- Stretch 9 (stable) / Raspbian Stretch
Fedora - 64-bit version of one of these Fedora versions:
Ubuntu - 64-bit version of one of these Ubuntu versions:
- Cosmic 18.10
- Bionic 18.04 (LTS)
- Xenial 16.04 (LTS)
Its the minimum supported versions so keeping them up to date does not make sense. I know clients that still use Windows XP (irrelevant here) 
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Well, in particular, CentOS 7 goes EOL June 2024. So no more updates.
Fedora is only supported for 6/12 months? So that should be versions 39 or 40
Ubuntu 18.10 isn’t an LTS version so it will be impossible to update it
I don’t know about debian, I’ll check … debian stretch is EOL too
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