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<div class="moz-cite-prefix">I agree with Howard, especially as
regards the SD cards. After all a 32GB Samsung Pro Endurance is
currently £13 on Amazon and a 64GB one is £26. But, if you retain
the smaller SD card as the root file system - on a DXSpider system
it is effectively read only except for system log files - and then
connect an SSD of these parts:<br>
<br>
<a class="moz-txt-link-freetext" href="https://www.amazon.co.uk/gp/product/B010SEARPU">https://www.amazon.co.uk/gp/product/B010SEARPU</a> into a<br>
<a class="moz-txt-link-freetext" href="https://www.amazon.co.uk/gp/product/B01N5RLG2C">https://www.amazon.co.uk/gp/product/B01N5RLG2C</a> containing
something like a <br>
<a class="moz-txt-link-freetext" href="https://www.amazon.co.uk/gp/product/B07G3L3DRK">https://www.amazon.co.uk/gp/product/B07G3L3DRK</a><br>
<br>
and you do that BEFORE you boot up your pristine SD card, Raspbian
will suggest you set that up as the /home partition and suddenly
you get a lot more storage which is much faster than the builtin
SD card. It works fine for me. Remember that even with the correct
SD card it will still wear out "quicker" than a bigger SSD,
especially on a busy site with lots of connections and normal
logging.<br>
<br>
I also put the RPi4 into this case which a) keeps it cool and b)
is enough of a "case" to just stick it on a shelf somewhere and
then just forget about. <br>
<br>
<a
href="https://shop.pimoroni.com/products/aluminium-heatsink-case-for-raspberry-pi-4">https://shop.pimoroni.com/products/aluminium-heatsink-case-for-raspberry-pi-4</a><br>
<br>
Hope this helps.<br>
<br>
73 Dirk G1TLH<br>
<br>
<br>
On 30/12/2019 01:35, Howard Leadmon via Dxspider-support wrote:<br>
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Well I am sure some wouldn't agree, and I will admit that I
haven't used a Pi4 to run a cluster node, as I have my cluster on
a real rackmount server. That said I have built dozens of Pi4's
to put out in the field for network testing, so have a few dozen
under my hat at this time.<br>
<br>
What I have done as far as storage is to use the built in MicroSD
slot, as it just boots, but I have been using the Samsung Pro
Endurance cards to buid the Pi's, and this is my reasoning behind
this choice. If you look they can take a lot more writes before
they fail than the typical card, as they are designed for video
recording. Also when you look at the Pro or EVO models, they
have fast reads, but in moments the writes throttle back. With
the Pro Endurance they will sustain an 80mb read rate, but unlike
most cards they will sustain a 30mb write rate pretty much
non-stop, as I write out images to the cards to start out each new
one ready to run, so kick it 64gb to start. This has worked
fantastic for me on about a dozen Pi4's so far, and yes you can do
other things that will run even faster, but for simple and
reliable which I need at remote locations, it just works!<br>
<br>
Also if your setting up a Pi4, make sure that you load the
firmware updater for Raspbian (debian) that will update your
firmware if it's behind, as it will make your pi4 run cooler, and
be less likely to throttle, which is always a good thing....<br>
<br>
<br>
73's de WB3FFV...<br>
<br>
<br>
<pre class="moz-signature" cols="72">---
Howard Leadmon - <a class="moz-txt-link-abbreviated" href="mailto:howard@leadmon.net" moz-do-not-send="true">howard@leadmon.net</a>
PBW Communications, LLC
<a class="moz-txt-link-freetext" href="http://www.pbwcomm.com" moz-do-not-send="true">http://www.pbwcomm.com</a>
</pre>
<div class="moz-cite-prefix">On 12/29/2019 7:14 PM, Joe Reed via
Dxspider-support wrote:<br>
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cite="mid:F02D2D29-3414-4A08-8AFE-A92B9C9BDE16@n9jr.com">
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<div class="">In anticipation of the failure of the Class 10 SD
card that has been running my DX Cluster for a number of years
I decided to bite the bullet and move from a Pi 2B to a Pi 4 B
with 4 GB of Ram and use a USB 3 compatible SSD drive. Wow,
the Internet is filled with bad information. I found some
hits that had me change the fstab which made no sense. And a
number of other interesting posts which provided a great deal
of entertainment and opportunities to reformat the SD.</div>
<div class=""><br class="">
</div>
<div class="">Then I found this You Tube video: <a
href="https://www.youtube.com/watch?v=2rglzPdsvYg" class=""
moz-do-not-send="true">https://www.youtube.com/watch?v=2rglzPdsvYg</a>
OMG! Copy the SD card to the SDD with unique partition IDs,
execute blkid to get the partUUID for the SSD and edit
/boot/cmdline.txt to change the root file system partUUID to
that of the SSD. So simple, so logical.</div>
<div class=""><br class="">
</div>
<div class="">Posted as an informational reference.</div>
<br class="">
<div class="">
<div>Joe Reed</div>
<div><a href="mailto:joe@n9jr.com" class=""
moz-do-not-send="true">joe@n9jr.com</a></div>
<div class=""><br class="">
</div>
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<br class="">
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