Apple will use flash memory optimized for Apple File System

Jun

15

2016

Apple has announced a new file system that will be used for iOS, MacOS, and tvOS watchOS. The file system is optimized according to Apple for flash memory and encryption.

Apple File System can be used as a Developer Preview of Mac OS Sierra 10:12 and should be released in 2017. Eventually Apple wants iOS too, tvOS and watchOS be based on the file system. The manufacturer announced at WWDC that the file system is optimized for use with flash memory or SSD and functionality as “strong encryption” copy-on-write metadata space sharing, cloning of files and folders, and provides snapshots.

Apple put on a page of the differences with respect to APFS HFS + on a row . HFS +, Apple is now used for OS X is based on the thirty year old Hierarchical File System . So APFS 64bit inode numbers will support rather than 32bit. Also supports the file system unlike HFS + trim asynchronous operations when deleting files and free up storage space.

Regarding encryption supports APFS singlekey- and MultiKey encryption with separate keys for data files and metadata. Apple will use AES-XTS or aes-cbc, depending on the hardware.

There are still some stumbling blocks for use. So APFS can not startup disks are used, file names are case-sensitive, backups from Time Machine is not supported yet, file volumes can not be encrypted with FileVault and can not handle Fusion Drives Apple computers .

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