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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">howard@leadmon.net</a>
PBW Communications, LLC
<a class="moz-txt-link-freetext" href="http://www.pbwcomm.com">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>
</div>
<blockquote type="cite"
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>
<br class="Apple-interchange-newline">
</div>
<br class="">
<br>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
Dxspider-support mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Dxspider-support@tobit.co.uk">Dxspider-support@tobit.co.uk</a>
<a class="moz-txt-link-freetext" href="https://mailman.tobit.co.uk/mailman/listinfo/dxspider-support">https://mailman.tobit.co.uk/mailman/listinfo/dxspider-support</a>
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