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Re: Server hardware advice.



Quoting Dan Ritter (2019-08-08 16:22:07)
> Celejar wrote: 
> > On Wed, 7 Aug 2019 23:59:44 -0700
> > David Christensen <dpchrist@holgerdanske.com> wrote:
> > 
> > ...
> > 
> > > Get at least four internal SATA 6 Gbps ports -- boot disk, optical 
> > > disk, two data disks (mirrored).  I prefer six.
> > 
> > Do most people running servers really want / need an optical disk? 
> > As long as the machine can boot via USB, is an optical disk really 
> > important for a server?
> > 
> > ...
> > 
> > > Then Intel stopped making desktop boards and I wanted ZFS. ZFS 
> > > wants ECC memory.  It was time to migrate to server hardware.
> > 
> > My understanding is that ZFS's need / desire for ECC is something of 
> > a myth. It's certainly true that many ZFS / FreeNAS *users* have 
> > such a need, but the filesystem itself apparently doesn't:
> > 
> > https://jrs-s.net/2015/02/03/will-zfs-and-non-ecc-ram-kill-your-data/
> 
> To summarize: if you're running ZFS, it can protect you from lots of 
> sources of data corruption. It can't protect you from RAM errors 
> without ECC, so you should opt for ECC if integrity is your goal.
> 
> None of the other filesystems protect you against RAM errors either, 
> so this is not a special requirement of ZFS.

ECC memory is rare among ARM SBCs, but Helios4 uses ECC memory!

 - Jonas

-- 
 * Jonas Smedegaard - idealist & Internet-arkitekt
 * Tlf.: +45 40843136  Website: http://dr.jones.dk/

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