Re: Homebuilt NAS Advice

From	Leslie Rhorer <lesrhorer@att.net>
Newsgroups	linux.debian.user
Subject	Re: Homebuilt NAS Advice
Date	2020-08-02 22:10 +0200
Message-ID	<AzssW-1VH-13@gated-at.bofh.it> (permalink)
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On 8/1/2020 8:06 PM, David Christensen wrote:
> On 2020-08-01 16:30, Leslie Rhorer wrote:
>> I am a big proponent of having a separate boot drive
> 
> +1
> 
> 
>> no matter what the file system, I would definitely up the memory to 
>> the 16GB max,
> 
> 1.  I try very hard not to spend money on obsolete technology.

	What is "obsolete"?  If a system does its job adequately, it isn't 
"obsolete", no matter how old it might be or how many newer bells and 
whistles it may fail to have.  What's more, why spend $2000 or more on 
unnecessary hardware when $70 for a minor upgrade to older hardware will 
do the job perfectly well?  To be sure, there comes a point where money 
spent on an older system that can no longer easily meet newer demands is 
poorly spent - maybe.  Memory is often an example, as newer systems 
often cannot use older memory.  Other upgrades, such as newer, larger 
drives, a new display, etc, can easily be used with a new system when 
the old one is finally retired.

	I will admit one should be very cognizant of exactly how much one is 
actually saving in the long run by spending money on old technology.

> 2.  I would wait until the computer is put into use and measurements 
> indicate memory is insufficient.

	I won't quibble with this.  It's not the way I would probably handle 
it, but it is not an unreasonable position.

> 3.  One or more small, fast SSD's used as a ZFS cache devices and/or 
> intent log devices can dramatically improve performance of ZFS.

	Or lots of other things.  On something like a laptop, it is virtually 
insane not to employ an SSD.  Even a high-powered server is very well 
served to boot from SSDs, however, and the cost has come down so 
drastically, there is little justification not to employ SSDs.  If I 
were running ZFS, I definitely would employ SSDs as cache and intent log 
devices.  For that matter, putting md intent bitmaps on SSDs is a pretty 
good idea, and booting from SSDs is a really good idea no matter what 
the mix of file systems.

> 4.  ZFS and non-ECC memory risk the "scrub of death" scenario, which has 
> been debated endlessly.

	Yes.  As I said, ZFS has many great features, especially for an 
enterprise server.  For a simple NAS, not so much, I think.

> I also ran desktop hardware as servers for many years, but decided to 
> buy a "real" server (with ECC memory) when building a ZFS file server. 
> The ECC is invisible, but the combination of Xeon processor, 
> dual-channel memory, and server chips throughout provide obvious 
> performance.

	Or not.  No matter how mighty, the server will not be able to 
out-perform the infrastructure.  My fairly humble desktop servers can 
easily pump out more than 4Gbps to clients, and indeed the nightly sync 
between the main array and the backup array proceeds at just such a rate 
across the two 10G optical links into my servers from the switch.  The 
links from the switch to the hosts, however, are all either 1G or 100M. 
While technically, all the hosts banging out full bore together might 
just be able to reach the transfer limit of the server, in practical 
terms, there is no way that amount of data could be digested or 
regurgitated from the limited number of hosts on the LAN.  The fact the 
two motherboards are not server class and are over 16 years old really 
doesn't matter.

Thread

Homebuilt NAS Advice Patrick Bartek <patrick.bartek@gmail.com> - 2020-07-29 22:00 +0200
  Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-07-29 22:20 +0200
    Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-07-29 22:30 +0200
      Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-07-29 23:40 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <patrick.bartek@gmail.com> - 2020-07-30 02:50 +0200
      Re: Homebuilt NAS Advice Tom Dial <tddial@comcast.net> - 2020-07-30 22:50 +0200
        Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 01:40 +0200
          Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-02 03:10 +0200
            Re: Homebuilt NAS Advice Keith Bainbridge <ke1th3216@gmail.com> - 2020-08-02 04:50 +0200
              Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-02 06:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 21:30 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 22:10 +0200
          Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 06:10 +0200
            Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-03 17:30 +0200
              Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-08-03 17:40 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 18:40 +0200
                Re: Homebuilt NAS Advice <tomas@tuxteam.de> - 2020-08-03 19:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-03 22:00 +0200
                Re: Homebuilt NAS Advice <tomas@tuxteam.de> - 2020-08-03 22:20 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 23:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:50 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:40 +0200
    Re: Homebuilt NAS Advice Anssi Saari <as@sci.fi> - 2020-07-30 10:00 +0200
      Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-07-30 13:20 +0200
  Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-07-30 01:50 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-07-30 23:40 +0200
    Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-08 01:30 +0200
      Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 03:30 +0200
        Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 14:40 +0200
  Re: Homebuilt NAS Advice Peter Ehlert <peter@sdi-baja.com> - 2020-07-30 19:00 +0200
    Re: Homebuilt NAS Advice Charles Curley <charlescurley@charlescurley.com> - 2020-07-30 21:50 +0200
      Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-07-31 13:10 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-07-30 23:30 +0200
      Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 01:50 +0200
        Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-08-02 17:50 +0200
  Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-03 17:20 +0200
    Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:10 +0200
      Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-04 01:20 +0200
        Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-04 10:40 +0200
          Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-04 11:30 +0200
            Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-04 16:00 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-04 16:30 +0200
              Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 05:50 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-05 16:20 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 17:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-05 17:40 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 12:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 16:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 17:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 18:10 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-07 18:30 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-07 19:40 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-08 00:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 04:30 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-09 11:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 17:00 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 18:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 19:20 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-09 23:50 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-10 00:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:50 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 18:40 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 23:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 05:30 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-07 18:30 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-06 17:20 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 18:20 +0200
        Re: Homebuilt NAS Advice Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-04 17:20 +0200
          Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 06:20 +0200
        Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 04:30 +0200
          Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 09:20 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 11:00 +0200
              Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 21:00 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 03:50 +0200
                Re: Homebuilt NAS Advice Kushal Kumaran <kushal@locationd.net> - 2020-08-06 06:20 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 04:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 05:50 +0200
            Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 12:30 +0200
      Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 12:30 +0200
        Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 21:10 +0200
          Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 23:30 +0200
            Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 00:30 +0200
              Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 01:20 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-08 09:10 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 04:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 04:50 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 06:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 07:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 07:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 18:10 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 03:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-07 03:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 05:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 05:40 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 08:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-07 08:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 09:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 17:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 01:40 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-08 04:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 22:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 00:20 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-09 01:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 22:40 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-10 01:30 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-08-04 06:30 +0200

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