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Zfs Alternatives
Similar projects and alternatives to zfs
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Moby
The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems
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zfsbootmenu
ZFS bootloader for root-on-ZFS systems with support for snapshots and native full disk encryption
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freebsd-src
The FreeBSD src tree publish-only repository. Experimenting with 'simple' pull requests....
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sanoid
These are policy-driven snapshot management and replication tools which use OpenZFS for underlying next-gen storage. (Btrfs support plans are shelved unless and until btrfs becomes reliable.)
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httm
Interactive, file-level Time Machine-like tool for ZFS/btrfs/nilfs2 (and even Time Machine and Restic backups!)
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promptfoo
Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.
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aero
Aero is a new modern, experimental, UNIX-like operating system following the monolithic kernel design. Supporting modern PC features such as long mode, 5-level paging, and SMP (multicore), to name a few.
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NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better zfs alternative or higher similarity.
zfs discussion
zfs reviews and mentions
Posts with mentions or reviews of zfs.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2026-07-07.
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How to Build a Minimal ZFS NAS Without Synology, QNAP, TrueNAS
> Running ZFS on anything but Solaris/Illumos/FreeBSD is asinine.
> ZFS is a permanent second-class citizen on Linux (due to usual open-source politics). This will never resolve.
Linux is the primary target of OpenZFS [0] [1], and has been since 2020 [2]. It may not be supported by the Linux kernel developers, but it's supported by the ZFS developers, and that's all that really matters.
> I don't want to trust my data to some half-assed out-of-tree solution that may or may not break in a week.
Sure, it's an out-of-tree module, but that doesn't mean that it will randomly break all the time; it just means that you may occasionally need to wait for a new OpenZFS release before upgrading your kernel.
> FreeBSD ZFS support has matured and is outstanding.
Agreed, but Linux and FreeBSD both use the same ZFS [3], so the I don't really see how the ZFS in FreeBSD can be better than the one in Linux. The tooling and install procedure is certainly better on FreeBSD, but the actual filesystem code is the same (and is probably slightly more robust on Linux since that's going to be where most of the testing occurs).
[0]: https://github.com/openzfs/zfs#supported-kernels-and-distrib...
[1]: https://github.com/openzfs/zfs/pull/8987
[2]: https://github.com/openzfs/zfs/releases/tag/zfs-2.0.0
[3]: https://docs.freebsd.org/en/books/handbook/zfs/
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Understanding ZFS Scrubs and Data Integrity
Two examples that I can find are https://github.com/openzfs/zfs/issues/7910, where very old versions of ZFS appear to have quietly written slightly incorrect ACL information, and https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/190... where Ubuntu 21.10 shipped with a bug that created corrupted ZFS filesystems. I believe https://www.illumos.org/issues/9847 may be another example of this, although less severe, where ZFS leaked disk space under some circumstances.
- OpenZFS 2.4.0: Encryption Performance Improvements
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DIY NAS: 2026 Edition
Have you considered "reflinks"? Supported as of [OpenZFS 2.2](https://github.com/openzfs/zfs/pull/13392).
Haven't used them yet myself but seems like a nice use case for things like minor metadata changes to media files. The bulk of the file is shared and only the delta between the two are saved.
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We're (now) moving from OpenBSD to FreeBSD for firewalls
> Ideally I'd want a read-only root FS with maybe an /etc and /var managed by an overlay.
OpenZFS 2.2 added support for overlays, so you can have the main pool(s) mounted as read-only:
* https://github.com/openzfs/zfs/releases/tag/zfs-2.2.0
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Learning to read Arthur Whitney's C to become Smart (2024)
ZFS has a very nice set of macros that work very well:
https://github.com/openzfs/zfs/blob/master/include/os/freebs...
See P2PHRASE() and friends. They were inherited from OpenSolaris.
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Are Hard Drives Getting Better?
The 990 Pros have a temperature sensor issue. See https://github.com/openzfs/zfs/discussions/14793#discussionc...
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Bcachefs Removed from the Mainline Kernel
I was curious how OpenZFS worked around that and found [0]
[0] https://github.com/openzfs/zfs/pull/8965
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Speed7811's September 22, 2025 comment in "Unsuitable SSD/NVMe hardware for ZFS"
Here is the direct link to the September 22, 2025 comment by Speed7811 (GitHub): https://github.com/openzfs/zfs/discussions/14793#discussionc... (github.com/openzfs/zfs/discussions/14793#discussioncomment-14473635)
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A Deep Dive into Debian 13 /Tmp: What's New, and What to Do If You Don't Like It
ZFS /tmp is probably fine, but swapping to ZFS on Linux is dicey AIUI; there's an unfortunate possibility of deadlock https://github.com/openzfs/zfs/issues/7734
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A note from our sponsor - SaaSHub
www.saashub.com | 11 Jul 2026
Stats
Basic zfs repo stats
784
12,308
9.8
8 days ago
openzfs/zfs is an open source project licensed under GNU General Public License v3.0 or later which is an OSI approved license.
The primary programming language of zfs is C.
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