I have done similar things on Linux for years and am now doing them on
OpenBSD.  Sounds like what you want to do can be done with a simple
rsync script.  OpenBSD ffs (ufs) should be stable, it has been around
for decades in various incarnations.  I have never noticed bit rot in
this system, though I imagine it could happen if a disk is gradually
going bad.  That's why multiple backups help.  You might want to set
up a raid5 backup, as this detects parity errors.  More complicated
though.  One weakness in such as system (ask me how I know!) is that
if the NAS goes gradually bad, the errors will propagate to the
backup.  Using rsync without the --delete option most of the time
alleviates this somewhat.  Only run with --delete when the backup
starts getting full and you are confident that your NAS drive is ok.

Dave

On 11/14/19, Jan Betlach <jbetl...@gmail.com> wrote:
>
> Hi guys,
>
> I am setting up a home NAS for five users. Total amount of data stored
> on NAS will not exceed 5 TB.
> Clients are Macs and OpenBSD machines, so that SSHFS works fine from
> both (no need for NFS or Samba).
> I am much more familiar and comfortable with OpenBSD than with FreeBSD.
> My dilema while stating the above is as follows:
>
> Will the OpenBSD’s UFS stable and reliable enough for intended
> purpose? NAS will consist of just one encrypted drive, regularly backed
> to hardware RAID encrypted two-disks drive via rsync.
>
> Should I byte the bullet and build the NAS on FreeBSD taking advantage
> of ZFS, snapshots, replications, etc? Or is this an overkill?
>
> BTW my most important data is also backed off-site.
>
> Thank you in advance for your comments.
>
> Jan
>
>


-- 
David J. Raymond
david.raym...@nmt.edu
http://physics.nmt.edu/~raymond

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