Hey everyone! I've been running Proxmox for a few months now on my homelab setup, and I'm starting to hit some limits with my current storage configuration. I'm using LVM right now, which works fine for basic stuff, but I keep seeing people rave about ZFS in the Proxmox community. Before I commit to rebuilding my entire setup, I'd love to get some real-world perspective from folks who've actually lived with both options.
Here's my situation: I'm running a modest homelab with about 8 VMs and a few containers, mostly for learning and experimentation. I've got a couple of 4TB drives and I'm thinking about adding more storage soon. The appeal of ZFS is pretty obvious and things like snapshots, compression, data integrity are what are appealing about it. But I'm also hearing it can be resource-hungry and has a steeper learning curve. Meanwhile, LVM feels stable and straightforward, even if it's a bit more "vanilla."
I'm curious about a few specific things:
- For homelab setups specifically, does the overhead of ZFS actually matter? Are we talking noticeable performance hits?
- How much easier is management and troubleshooting with LVM compared to ZFS?
- If you've migrated from one to the other, was it worth the hassle?
- Are there any gotchas with ZFS on Proxmox that the documentation doesn't really highlight?
Also, I'm wondering if there's a middle ground I'm missing like using ZFS for specific VMs while keeping LVM for less critical stuff? Or would that just create a maintenance nightmare?
Would love to hear what you all are running and why you made those choices. Are you team ZFS all the way, or do you think people sometimes overcomplicate things when LVM does the job just fine?
Jeffrey,
Great questions here! For a home lab your size, I'd probably go with ZFS if you're already considering a storage rebuild. The performance overhead is generally overblown these days unless you're really tight on RAM. I think you will really benefit from the snapshots, compression, replication, and data integrity it provides. lThat said, LVM is definitely simpler. There's less to learn, less to troubleshoot, and it requires less RAM. It also works perfectly fine if you have a solid backup strategy.
One thing many people don't realize is you don't have to choose one or the other. Proxmox can happily run both. You could keep your existing LVM storage and add a ZFS pool with your new drives, and then decide which VMs you want to run on which storage which is pretty cool. My biggest ZFS advice: skip deduplication, run regular scrubs, and spend some time planning your pool layout before creating it. That's where most people make mistakes I think most often.
Personally, after using both, I prefer ZFS and wouldn't build a new Proxmox host on LVM today unless I had a very specific reason to do so due to the advantages that it offers across the board.