Re: What is difference between zfs and ufs?

> Silent corruption (rare).
> Need to "fsck -y" in single user mode (caused by external factors like 
> crashes or power failure and getting less frequent with newer releases, but 
> still).

this is not silent corruption but normal corruption.
i recommend setting for SATA drives
kern.cam.ada.write_cache=0

which thanks to NCQ does not produce any noticable slowdown but allows UFS 
to work really well with softupdates. With that setting when UFS gets 
information that data was writted it is actually writted.

> Deadlocks when using snapshots (see #244048).
will see but i never had a problem. I use at most one snapshot for backups 
- what i think is real use of snapshot.