<story><title>Apple File System</title><url>https://developer.apple.com/library/prerelease/content/documentation/FileManagement/Conceptual/APFS_Guide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40016999</url></story><parent_chain><item><author>cpr</author><text>Siracusa will finally be happy. ;-)&lt;p&gt;Sounds an awful like like ZFS (zero-cost clones, read-only snapshots) but could it be? I would imagine they&amp;#x27;d start from scratch to due IP issues.&lt;p&gt;Clearly this is immature technology they want to get out for testing&amp;#x2F;evaluation before it&amp;#x27;s fully adopted even into their own products. (See below.)&lt;p&gt;- - - from the release notes - - -&lt;p&gt;As a developer preview of this technology, there are currently several limitations:&lt;p&gt;Startup Disk: APFS volumes cannot currently be used as a startup disk.&lt;p&gt;Case Sensitivity: Filenames are currently case-sensitive only.&lt;p&gt;Time Machine: Time Machine backups are not currently supported.&lt;p&gt;FileVault: APFS volumes cannot currently be encrypted using FileVault.&lt;p&gt;Fusion Drive: Fusion Drives cannot currently use APFS.</text></item></parent_chain><comment><author>legulere</author><text>Another reason is that ZFS just isn&amp;#x27;t fitting for Apple devices. It&amp;#x27;s memory hungry and energy hungry and has several limitations compared to HFS+ like not being able to be resized.</text></comment>
<story><title>Apple File System</title><url>https://developer.apple.com/library/prerelease/content/documentation/FileManagement/Conceptual/APFS_Guide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40016999</url></story><parent_chain><item><author>cpr</author><text>Siracusa will finally be happy. ;-)&lt;p&gt;Sounds an awful like like ZFS (zero-cost clones, read-only snapshots) but could it be? I would imagine they&amp;#x27;d start from scratch to due IP issues.&lt;p&gt;Clearly this is immature technology they want to get out for testing&amp;#x2F;evaluation before it&amp;#x27;s fully adopted even into their own products. (See below.)&lt;p&gt;- - - from the release notes - - -&lt;p&gt;As a developer preview of this technology, there are currently several limitations:&lt;p&gt;Startup Disk: APFS volumes cannot currently be used as a startup disk.&lt;p&gt;Case Sensitivity: Filenames are currently case-sensitive only.&lt;p&gt;Time Machine: Time Machine backups are not currently supported.&lt;p&gt;FileVault: APFS volumes cannot currently be encrypted using FileVault.&lt;p&gt;Fusion Drive: Fusion Drives cannot currently use APFS.</text></item></parent_chain><comment><author>TillE</author><text>ZFS gobbles RAM and almost certainly couldn&amp;#x27;t be made to run acceptably on the Apple Watch. No, this seems like something developed from scratch to meet their particular needs.</text></comment>