Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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Powerloss might happen as I don't have a ups.
And when it comes to mdadm, it just happens to be the first and only redundancy tool I know. I am however open to learn and try new things.
ZFS seems interesting, but: I read that ZFS would require quite a lot of RAM, and I was going for 32 GBs only, would it be enough?
1 GB of RAM for every TB of storage is recommended but you can do with way less for ZFS.
ZFS doesn't require lots of RAM, more RAM just improves the caching (ARC) it can do. You can set ZFS to use all unused RAM as ARC, so it doesn't interfere with other services running on the same PC. I ran ZFS with lots of VMs on an old office PC with 16GB RAM and it was still able to max out a 10gig nic.
ZFS doesn't require a lot of RAM, but it will use more RAM if it's available. 32G would be plenty for a home setup. I think my home file server has 24 or 32G of RAM and ZFS. If it's important data then stick to what you know; there's nothing wrong with mdadm.