> > Also, it would seem that Apple really can't push ZFS into Mac OS X > > until evacuation of data and removal of vdevs is supported for pools. > > Does hfs+ support this? I see no evidence that it does.
HFS+ isn't a file system with integrated volume management. Any disks where no operating system resides on can be yanked out at will, not causing problems. Data movement, if necessary, has to be done by hand though, but at least you can remove disks. It's the usual home user scenario, where a disk breaks but can't be replaced immediately (usually financial or time constraints). Considering that the typical home user pools will be JBODs and not RAID-Z, I also think that vdev removal is necessary in these scenarios. -mg
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