WWDCで一番のニュースは

個人的にはApple File Systemですね。やっとHFS＋とおさらばできそうですね。Flash / SSD Optimizationは別として、下記の特徴と制限を見てZFSを思い出すのは私だけでしょうか。

• Flash / SSD Optimization
• Space Sharing
• Cloning of Files and Directories
• Snapshots
• Fast Directory Sizing
• Atomic Safe-Save

• Startup Disk: APFS volumes cannot currently be used as a startup disk.
• Case Sensitivity: Filenames are currently case-sensitive only.
• Time Machine: Time Machine backups are not currently supported.
• FileVault: APFS volumes cannot currently be encrypted using FileVault.
• Fusion Drive: Fusion Drives cannot currently use APFS.