I know that ZFS is available on variety of operating systems Solaris, Illumos, Linux, BSD etc.

Suppose I have a bunch of disks that are part of ZFS raid file system that was created on Linux, could those drives be taken out of the Linux machine and put into a machine running BSD or Illumos and just work? Are there any OS specific things that are written to ZFS file systems that would make moving a disk between different implementations of ZFS a problem?

What about if the ZFS formatted disks were moved across CPU architectures say from a machine running SPARC to x86. Would the ZFS metadata be affected by endianess of the CPU architecture?