As I understand it, ZFS would be too heavyweight for iOS. Its memory usage [1] is much higher than most other file systems.<p>iOS uses HFS+ in case sensitive mode (&quot;HSFX&quot;), by the way.<p>[1] <a href="https:&#x2F;&#x2F;wiki.freebsd.org&#x2F;ZFSTuningGuide" rel="nofollow">https:&#x2F;&#x2F;wiki.freebsd.org&#x2F;ZFSTuningGuide</a>