As the objective is to share a slice between OSes, with ZFS you would be out of luck: not many OSes have an implementation.
AFAIK, best luck woul be with FAT32 (yeah) and ext2fs.
Not quite file systems I would use for TeraBytes
Besides, I would not dare, even to test, play with multiple OSes to access that amount of data.
I ould rather build a server and go the mOnOwall/FreeNAS way. This in order to have a small OS and networking.
Now the question: if you have an OpenSolaris (UFS/ZFS or whatever) based NFS, why don't you use NFS to access them? Why try to mount the directories under UFS?
fwiw:
Poposal for a Ext2fs project on OpenSolaris
http://www.opensolaris.org/jive/thre...82718&tstart=0
although there already are some ext2fs implementations. Go to OpenSolaris.org and enter ext2fs in the search.
Re: Slowaris.
I also have the feeling Solaris is less reponsive than OpenBSD. Maybe because OpenSolaris has everything and the kitchen sink installed and configured.
Downloaded Milax miniCD, the new kid on the block (128MB) to check what is included and what not
http://genunix.org/distributions/dss/index.shtml