Re: Server hardware advice.

From	Reco <recoverym4n@enotuniq.net>
Newsgroups	linux.debian.user
Subject	Re: Server hardware advice.
Date	2019-08-08 17:30 +0200
Message-ID	<ysSwx-6VL-3@gated-at.bofh.it> (permalink)
References	<ysmQ1-3Sj-1@gated-at.bofh.it> <ysKIF-28K-7@gated-at.bofh.it> <ysQXL-5Rz-1@gated-at.bofh.it> <ysRAt-6kT-1@gated-at.bofh.it> <ysS3v-6w2-21@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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	Hi.

On Thu, Aug 08, 2019 at 04:54:17PM +0200, Jonas Smedegaard wrote:
> > > > 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!

... with the only problem being the quantity of such RAM.

A typical Helios4 board has whopping 2Gb of RAM, which is about 4 times
lower than needed for comfortable ZFS usage (assuming that zpool size is
measured in terabytes) and a user intends to run something more than a
OS kernel and sshd.
That estimation deliberately excludes all advanced ZFS features (such as
compression, encryption and deduplication).

IMO for such RAM sizes it's better to use old trusted MDRAID, LVM, ext4
and a new kid on the block - dm-integrity (all the needed tools are in
buster, but some assembly is required).

Reco

Thread

Server hardware advice. Steven Mainor <steve@degga.net> - 2019-08-07 07:40 +0200
  Re: Server hardware advice. Richard Hector <richard@walnut.gen.nz> - 2019-08-07 08:00 +0200
    Re: Server hardware advice. Steven Mainor <steve@degga.net> - 2019-08-07 08:10 +0200
      Re: Server hardware advice. Nektarios Katakis <nektarios@mail.nektarioskatakis.xyz> - 2019-08-07 12:20 +0200
        Re: Server hardware advice. mick crane <mick.crane@gmail.com> - 2019-08-07 14:10 +0200
      Re: Server hardware advice. deloptes <deloptes@gmail.com> - 2019-08-07 17:00 +0200
        Re: Server hardware advice. Michael Stone <mstone@debian.org> - 2019-08-07 17:10 +0200
          Re: Server hardware advice. deloptes <deloptes@gmail.com> - 2019-08-07 17:20 +0200
            Re: Server hardware advice. Michael Stone <mstone@debian.org> - 2019-08-07 17:40 +0200
            Re: Server hardware advice. ghe <ghe@slsware.net> - 2019-08-07 17:50 +0200
            Re: Server hardware advice. Celejar <celejar@gmail.com> - 2019-08-08 00:20 +0200
        Re: Server hardware advice. Steven Mainor <steve@degga.net> - 2019-08-07 18:50 +0200
          Re: Server hardware advice. deloptes <deloptes@gmail.com> - 2019-08-08 07:50 +0200
            Helpful attitude (was: Server hardware advice.) Nicolas George <george@nsup.org> - 2019-08-08 11:00 +0200
              Re: Helpful attitude (was: Server hardware advice.) Kenneth Parker <sea7kenp@gmail.com> - 2019-08-08 12:50 +0200
                Re: Helpful attitude (was: Server hardware advice.) Jonas Smedegaard <jonas@jones.dk> - 2019-08-08 14:10 +0200
                Re: Helpful attitude (was: Server hardware advice.) Dan Ritter <dsr@randomstring.org> - 2019-08-08 16:20 +0200
                Re: Helpful attitude (was: Server hardware advice.) Jonas Smedegaard <jonas@jones.dk> - 2019-08-08 17:00 +0200
                Re: Helpful attitude (was: Server hardware advice.) deloptes <deloptes@gmail.com> - 2019-08-08 17:20 +0200
                Re: Helpful attitude (was: Server hardware advice.) Jonas Smedegaard <jonas@jones.dk> - 2019-08-08 18:00 +0200
                Re: Helpful attitude (was: Server hardware advice.) Judah Richardson <judahrichardson@gmail.com> - 2019-08-08 21:50 +0200
                Re: Helpful attitude (was: Server hardware advice.) deloptes <deloptes@gmail.com> - 2019-08-09 00:50 +0200
                [OT] Helpful attitude (was: Server hardware advice.) <tomas@tuxteam.de> - 2019-08-09 10:00 +0200
                Re: [OT] Helpful attitude (was: Server hardware advice.) Étienne Mollier <etienne.mollier@mailoo.org> - 2019-08-09 11:20 +0200
                Re: [OT] Helpful attitude (was: Server hardware advice.) <tomas@tuxteam.de> - 2019-08-09 11:50 +0200
                Re: [OT] Helpful attitude (was: Server hardware advice.) Étienne Mollier <etienne.mollier@mailoo.org> - 2019-08-09 12:30 +0200
                Re: [OT] Helpful attitude (was: Server hardware advice.) tomas@tuxteam.de - 2019-08-09 14:40 +0200
                Re: [OT] Helpful attitude (was: Server hardware advice.) Étienne Mollier <etienne.mollier@mailoo.org> - 2019-08-09 15:50 +0200
                Re: [OT] Helpful attitude John Hasler <jhasler@newsguy.com> - 2019-08-09 15:50 +0200
                Re: [OT] Helpful attitude The Wanderer <wanderer@fastmail.fm> - 2019-08-09 16:00 +0200
                Re: [OT] Helpful attitude Larry Martell <larry.martell@gmail.com> - 2019-08-09 16:10 +0200
                Re: [OT] Helpful attitude Étienne Mollier <etienne.mollier@mailoo.org> - 2019-08-09 16:10 +0200
                Re: [OT] Helpful attitude John Hasler <jhasler@newsguy.com> - 2019-08-09 17:30 +0200
                Re: [OT] Helpful attitude Étienne Mollier <etienne.mollier@mailoo.org> - 2019-08-09 19:00 +0200
                Re: [OT] Helpful attitude deloptes <deloptes@gmail.com> - 2019-08-09 18:30 +0200
                Re: [OT] Helpful attitude Brian <ad44@cityscape.co.uk> - 2019-08-09 20:50 +0200
                Re: Helpful attitude (was: Server hardware advice.) Curt <curty@free.fr> - 2019-08-08 22:20 +0200
                Re: Helpful attitude Richard Owlett <rowlett@cloud85.net> - 2019-08-09 16:10 +0200
                Re: Helpful attitude (was: Server hardware advice.) ghe <ghe@slsware.net> - 2019-08-09 08:20 +0200
                Re: Helpful attitude (was: Server hardware advice.) Gene Heskett <gheskett@shentel.net> - 2019-08-09 09:20 +0200
                Re: Helpful attitude (was: Server hardware advice.) "Bob Crochelt" <rfc56@fastmail.com> - 2019-08-09 14:00 +0200
                Re: Helpful attitude (was: Server hardware advice.) Gene Heskett <gheskett@shentel.net> - 2019-08-09 16:20 +0200
                Re: Helpful attitude (was: Server hardware advice.) "Bob Crochelt" <rfc56@fastmail.com> - 2019-08-10 00:00 +0200
              Re: Helpful attitude (was: Server hardware advice.) rhkramer@gmail.com - 2019-08-08 14:10 +0200
  Re: Server hardware advice. Reco <recoverym4n@enotuniq.net> - 2019-08-07 09:00 +0200
    Re: Server hardware advice. john doe <johndoe65534@mail.com> - 2019-08-07 09:40 +0200
      Re: Server hardware advice. Jonas Smedegaard <jonas@jones.dk> - 2019-08-07 10:50 +0200
    Re: Server hardware advice. Jonas Smedegaard <jonas@jones.dk> - 2019-08-07 10:30 +0200
      Re: Server hardware advice. Reco <recoverym4n@enotuniq.net> - 2019-08-07 11:00 +0200
        Re: Server hardware advice. Jonas Smedegaard <jonas@jones.dk> - 2019-08-07 11:10 +0200
      Re: Server hardware advice. Steven Mainor <steve@degga.net> - 2019-08-07 12:10 +0200
        Re: Server hardware advice. Jonas Smedegaard <jonas@jones.dk> - 2019-08-07 12:50 +0200
      Re: Server hardware advice. jochen-2019-q2@ozark.de - 2019-08-07 22:40 +0200
      Re: Server hardware advice. Andrei POPESCU <andreimpopescu@gmail.com> - 2019-08-08 09:30 +0200
        Re: Server hardware advice. John Hasler <jhasler@newsguy.com> - 2019-08-09 05:20 +0200
          Re: Server hardware advice. Steven Mainor <steve@degga.net> - 2019-08-09 08:00 +0200
            Re: Server hardware advice. John Hasler <jhasler@newsguy.com> - 2019-08-09 15:40 +0200
              Re: Server hardware advice. deloptes <deloptes@gmail.com> - 2019-08-09 18:20 +0200
                Re: Server hardware advice. Reco <recoverym4n@enotuniq.net> - 2019-08-09 19:00 +0200
                Re: Server hardware advice. Celejar <celejar@gmail.com> - 2019-08-09 19:20 +0200
                Re: Server hardware advice. Reco <recoverym4n@enotuniq.net> - 2019-08-09 20:30 +0200
                OT "x times cheaper", was: Re: Server hardware advice. Richard Hector <richard@walnut.gen.nz> - 2019-08-10 10:00 +0200
                Re: OT "x times cheaper", was: Re: Server hardware advice. deloptes <deloptes@gmail.com> - 2019-08-10 11:20 +0200
                Re: OT "x times cheaper", was: Re: Server hardware advice. Richard Hector <richard@walnut.gen.nz> - 2019-08-10 11:30 +0200
                Re: OT "x times cheaper", was: Re: Server hardware advice. David Wright <deblis@lionunicorn.co.uk> - 2019-08-10 17:10 +0200
                Re: OT "x times cheaper", was: Re: Server hardware advice. Richard Hector <richard@walnut.gen.nz> - 2019-08-11 00:50 +0200
                Re: OT "x times cheaper", was: Re: Server hardware advice. mick crane <mick.crane@gmail.com> - 2019-08-11 09:50 +0200
                Re: OT "x times cheaper", was: Re: Server hardware advice. Curt <curty@free.fr> - 2019-08-11 12:00 +0200
                Re: Server hardware advice. John Hasler <jhasler@newsguy.com> - 2019-08-09 19:50 +0200
                Re: Server hardware advice. Steven Mainor <steve@degga.net> - 2019-08-10 04:00 +0200
    Re: Server hardware advice. Steven Mainor <steve@degga.net> - 2019-08-07 12:00 +0200
      Re: Server hardware advice. Reco <recoverym4n@enotuniq.net> - 2019-08-07 13:00 +0200
  Re: Server hardware advice. David Christensen <dpchrist@holgerdanske.com> - 2019-08-08 09:10 +0200
    Re: Server hardware advice. John Hasler <jhasler@newsguy.com> - 2019-08-08 15:20 +0200
    Re: Server hardware advice. Celejar <celejar@gmail.com> - 2019-08-08 15:50 +0200
      Re: Server hardware advice. Dan Ritter <dsr@randomstring.org> - 2019-08-08 16:30 +0200
        Re: Server hardware advice. Jonas Smedegaard <jonas@jones.dk> - 2019-08-08 17:00 +0200
          Re: Server hardware advice. Reco <recoverym4n@enotuniq.net> - 2019-08-08 17:30 +0200
            Re: Server hardware advice. Jonas Smedegaard <jonas@jones.dk> - 2019-08-08 18:20 +0200
              Re: Server hardware advice. Steven Mainor <steve@degga.net> - 2019-08-08 22:50 +0200
                Re: Server hardware advice. Dan Ritter <dsr@randomstring.org> - 2019-08-08 23:10 +0200
                Re: Server hardware advice. Michael Stone <mstone@debian.org> - 2019-08-08 23:20 +0200
        Re: Server hardware advice. David Christensen <dpchrist@holgerdanske.com> - 2019-08-09 00:10 +0200
  Re: Server hardware advice. Igor Cicimov <icicimov@gmail.com> - 2019-08-09 12:20 +0200

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