> 1.  How stable is ZFS?

It's a new file system; there will be bugs.  It appears to be well-tested, 
though.  There are a few known issues; for instance, a write failure can panic 
the system under some circumstances.  UFS has known issues too....

> 2.  Recommended config.  Above, I have a fairly
> simple setup.  In many of the examples the
> granularity is home directory level and when you have
> many many users that could get to be a bit of a
> nightmare administratively.

Do you need user quotas?  If so, you need a file system per user with ZFS.  
That may be an argument against it in some environments, but in my experience 
tends to be more important in academic settings than corporations.

> 4.  Since all data access is via NFS we are concerned
> that 32 bit systems (Mainly Linux and Windows via
> Samba) will not be able to access all the data areas
> of a 2TB+ zpool even if the zfs quota on a particular
> share is less then that.  Can anyone comment?

Not a problem.  NFS doesn't really deal with volumes, just files, so the 
offsets are always file-relative and the volume can be as large as desired.

Anton
 
 
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