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MacZFS is free data storage and protection software for all Mac OS users. It's for people who have Mac OS, who have any data, and who really like their data. Whether on a single-drive laptop or on a massive server, it'll store your petabytes with ragingly redundant RAID reliability, and it'll keep the bit-rotted bleeps and bloops out of your iTunes library.

The completely free MacZFS provides absolutely all functionality, speed, and data integrity guarantee which are needed for personal and small enterprise use. We believe it to be one of the most advanced storage solutions for most Mac OS users, at any price.

What's New

Version 74.3.3:
  • Updated MacZFS 74.3 with support for OS X 10.9
  • Installer supports OS X 10.9
  • Kernel module and all binaries include full version info
  • Protected kernel module against calls from wrong user land tools
  • Re-added man pages


OS X 10.5 or later

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MacZFS User Discussion

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Awado Member IconComment+100

New version 74.3.0 available at the developer's website.

"This installer is a feature release of the MacZFS-74.x code line. It provides the same pool and file system revision as MacZFS-74.0 to MacZFS-74.2, but adds full support for the "ashift" property (for zpool create and add), a working ztest and zdb utilities, updated manpages and support for more than 80 columns in zpool iostat output. It will install on MacOSX Leopard, Snow Leopard, Lion and Mountain Lion."

Reply0 replies
Version 74.2.0
Mike666 Member IconComment+25

FYI, this is only an update for Mountain Lion installation - the code base is the same as 74.1.0 otherwise. If you don't have Mountain Lion, you don't need to install this.

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Version 74.2.0
Mdognrdog Member IconComment+152

It's a giant shame that ZFS never made it into OS X. ZFS is wildly superior to HFS+.

Because I can't use MacZFS to create bootable partitions, or partitions supporting Spotlight, it doesn't make much sense for me to install it. But for bulk storage of data, especially spanning multiple volumes, this is a great solution.

Eventually, Apple will *have to* phase out HFS+. Maybe by then, they'll have so much money they can just get Oracle to sell them the rights to ZFS. A man can dream.

Reply0 replies
Version 74.2.0
Libertyforall1776 Member IconComment+1130

Also see ZEVO for commercially supported ZFS:

Reply2 replies
Version 8.0

Ten's Complement has been bought by GreenBytes - a company with a lame name that has no consumer-oriented products - and is no longer in existence. For GreenBytes's propaganda re ZEVO, go to:



Much netter than nothing:


Xenophon Member IconComment+26

I'm puzzled. Dustin in on the Google code MacZFS project team, yet this "8.0" update does not appear on the official wiki page (http://code.google.com/p/maczfs/).

Where exactly does this release fit in?

Reply1 reply
Version 8.0

Does it matter? If it does, then Visit Developer's Site. That which is hidden will be made open unto thee.

user icon+0
Version 74.2.0
user icon+15
Version 74.2.0
> 5 2


Current Version (74.x)


Downloads 5,607
Version Downloads 1,376
License Free
Date 24 Feb 2014
Platform Intel 64 / OS X / PPC 32 / Intel 32 / PPC 64
Price Free
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