Re: ZFS vs. UFS

>
> On 24/07/2012 14:51, Laszlo Nagy wrote:
> >
> > Hello,
> >
> > Under FreeBSD 9, what filesystem should I use for PostgreSQL? (Dell
> > PowerEdge 2900, 24G mem, 10x2T SATA2 disk, Intel RAID controller.)
> >
> > * ZFS is journaled, and it is more independent of the hardware. So if
> > the computer goes wrong, I can move the zfs array to a different
> server.
> > * UFS is not journaled. Also I have to rely on the RAID card to build
> > the RAID array. If there is a hw problem with it, then I won't be
> > able to recover the data easily.
> >
> > I wonder if UFS has better performance or not. Or can you suggest
> > another fs? Just of the PGDATA directory.
>

Relying on physically moving a disk isn't a good backup/recovery strategy.
Disks are the least reliable single component in a modern computer. You
should figure out the best file system for your application, and separately
figure out a recovery strategy, one that can survive the failure of *any*
component in your system, including the disk itself.

Craig