Another turn in the Apple-ZFS saga. Apple has made available a developer preview of ZFS for Mac OS X with read/write capability. The preview is available to all ADC members. From the readme file: "ZFS is a new filesystem from Sun Microsystems which has been ported by Apple to Mac OS X. The initial (10.5.0) release of Leopard will restrict ZFS to read-only, so no ZFS pools or filesystems can be modified or created. This Developer Preview will enable full read/write capability, which includes the creation/destruction of ZFS pools and filesystems." Update: Will it ever end? The release has been pulled from ADC by Apple.