Fixed that for you.
Now, I've since build a storage server for my homelab using ZFS, but mdadm is far more accessible. It also feels easier - I know what's on the drives and how it is stored. In case of something strange happening with ZFS, I don't have any hope except backups. Also, ZFS lacks support in most distributions and somewhat obscure encryption capability.
I don't mean to bash ZFS here - it's great. But the GP feels like it's saying "I don't see why would anyone not want to run a dedicated kubernetes cluster with HA for running a program on Linux".
Thats not quite right
Its more that the documentation, command line interface and general user setup is far more friendly than mdadm. I've been a sysadmin for many years, and looked after innumerable file servers, from clustered XFS (!) through many years of lustre, plain old XFS/ext2/3/5 on HWraid to netapps&isilons, and all sorts of flash in the pan appliances.
Barring GPFS, the only file system that has documentation and tooling that is simple to understand and doesn't immediately bite you in the arse is ZFS.
Kubernetes is neither simple, easy or quick to setup, or run.
ZFS works as well as any FS in places with 8 gigs of ram. Hell I even run a KVM node with just 16 gigs of ram. Its working just fine.
This is not what the documentation or the thousands of posts from ZFS experts out there imply. The direct implication is that ZFS REQUIRES that much memory for day to day mundane operation.
Google "zfs memory requirements" and pick one. Go argue with them, not with me. The top result is a Stack Overflow answer, perhaps you can start there.
That's not documentation, and the posts agree with me, counter to your original claim.
> Go argue with them, not with me. The top result is a Stack Overflow answer, perhaps you can start there.
The top result literally agrees with me. It links to a page talking about dedup.
So, Google actually proved you wrong. You're spreading FUD.
The "don't even dare to use ZFS without dedicating 8-16 GB of memory to it" warnings all over the ZFS documentation online has served as a very, very good reason for me to not use ZFS for anything at all.
I'll stick with tooling that lets my homelab actually have enough RAM to run the applications I want to run.