<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
I notice my HP 1Us generate a lot more heat the my Supermicro 3U
& 4U systems. All have redundant PSU and similar CPUs. The
SMC have tons more memory and more PCIe cards. Has anyone else
noticed more heat from 1U systems?<br>
<br>
I'll probably will not buy 1Us in the future, because 1Us are a pain
to cable.<br>
<br>
IPMI is very cool. HP cripples, er, requires an extra cost license
to get full use out of the HP iLo.<br>
<br>
<div class="moz-cite-prefix">On 4/14/16 8:11 AM, Jim Kinney wrote:<br>
</div>
<blockquote
cite="mid:CAEo=5PwuZah7NE4Ud-mYDhEhJoq+BOZW_MYhvkyQ8W_ohG=kDA@mail.gmail.com"
type="cite">
<p dir="ltr">On the whole, I agree with all of what was said.
Server gear is designed to RUN FOREVER and desktop gear is
designed to SELL IN THE MILLIONS. Totally different engineering
viewpoints.</p>
<p dir="ltr">For the beginner Linux newbie, I would argue the
server is the hardware to learn on for the aspiring
professional. That said, any decent machine will provide
expertise in Linux skilz :-)</p>
<p dir="ltr">Buying a used server for $200 beats the used desktop
for the same price from a professional standpoint in most cases.
Unless the plan is to do big graphic processing for artists
doing 3D design, desktops are generally disposable crap
hardware. The server gear _is_ more costly not just because of
quantity price issues but because of engineered robustness. </p>
<p dir="ltr">Dual power supplies don't pull much more power that a
single one. The total load is split between the two plus a tiny
fraction for monitoring and inefficiency losses.</p>
<p dir="ltr">The power used by servers is what ever load is
required of them. The Intel systems will use more power per cpu
flop than the Opteron ones. All can throttle back clock speed to
cut power when unused.</p>
<p dir="ltr">Fan noise on 1U machines is a problem. Desktops have
huge fans and can turn slower to move the same amount of air and
thus less noise. </p>
<p dir="ltr">IPMI ports should NEVER be wired up to touch LAN or
certainly not Internet networks. Some Dells have a shared
ILO/nic which kills using one nic for much of anything.</p>
<p dir="ltr">But ipmi is really cool!</p>
<div class="gmail_quote">On Apr 14, 2016 7:27 AM, "DJ-Pfulio" <<a
moz-do-not-send="true" href="mailto:djpfulio@jdpfu.com"><a class="moz-txt-link-abbreviated" href="mailto:djpfulio@jdpfu.com">djpfulio@jdpfu.com</a></a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">"Server"
hardware has many downsides.<br>
* Power use - often these things have redundant PSUs; Server
power use has been<br>
reduced greatly, but is still higher than desktops (for good
reason).<br>
* Heat - more power become more heat. Think about the
July/August electric bill.<br>
* Noise - ever been inside a data center? Noise isn't **any**
consideration.<br>
* Higher cost of upgrades/replacement parts, usually.<br>
<br>
A few pluses:<br>
* Huge amount of RAM / ECC RAM<br>
* Server-class CPUs<br>
* Rack mounting (may not be a plus)<br>
<br>
But Jim is right. Sometimes there are things that only server
machines have<br>
which are worth having hands-on experience with - IPMI for
example. How do lock<br>
that down, since almost all IPMI has huge security issues.<br>
<a moz-do-not-send="true"
href="https://en.wikipedia.org/wiki/Intelligent_Platform_Management_Interface"
rel="noreferrer" target="_blank">https://en.wikipedia.org/wiki/Intelligent_Platform_Management_Interface</a><br>
<br>
Some of the Core i7 and multi-core AMD desktop CPUs are really
impressive, so<br>
getting a "server" CPU isn't that important for a home user.
Of course, they<br>
will use lots of power too, when a 53W system might be all
that is required.<br>
<br>
ECC RAM - if you run ZFS, get ECC RAM. Lots of it. Some
desktop MBs support ECC<br>
and I have a hard time thinking of what someone at home would
do with 32G of RAM<br>
inside a system. Met a guy with 96G of RAM in his box, but he
was running<br>
Windows. From what he described, sounded like 8G of RAM would
have been overkill<br>
to me. So he was stuck with this server-class box, 5+ yr old
CPUs and 96G of<br>
RAM that a new Core i7 would have blown away for $1K total
system cost.<br>
<br>
The point is that home server hardware to learn on isn't bad
when it is cheap,<br>
but if you spend $4k+ on it, you'll find that it is like an
albatross following<br>
you around for years.<br>
<br>
It is noisy and sucks 2x-4x more power than a desktop system.<br>
<br>
<br>
On 04/13/2016 11:23 PM, Scott M. Jones wrote:<br>
> Does it have a loud fan? That might be the down side...<br>
><br>
> On Apr 12, 2016, at 5:00 PM, Jim Kinney <<a
moz-do-not-send="true" href="mailto:jim.kinney@gmail.com"><a class="moz-txt-link-abbreviated" href="mailto:jim.kinney@gmail.com">jim.kinney@gmail.com</a></a><br>
> <mailto:<a moz-do-not-send="true"
href="mailto:jim.kinney@gmail.com">jim.kinney@gmail.com</a>>>
wrote:<br>
><br>
>> I don't push hardware unless it's mine or I'm just
drooling over it.<br>
>><br>
>> However....<br>
>><br>
>> <a moz-do-not-send="true"
href="http://ebay.to/1VSdviy" rel="noreferrer"
target="_blank">http://ebay.to/1VSdviy</a><br>
>><br>
>> That's a bitly link to an ebay listing for several
Dell 1U systems. They have<br>
>> the basics of everything to get jumping on Linux from
power management to<br>
>> virtualization all for $213 (including shipping).
These are reliable, solid<br>
>> machines that are out of date for current commercial
use (DDR2 RAM is far more<br>
>> costly that DDR3 per GB) but perfect for someone who
wants server-class gear<br>
>> at home to learn on.<br>
>><br>
>> I usually get supermicro but they all have odd quirks
that make them a pain.<br>
>> New ones are a great deal on that price/power/pain
curve. Dell is over priced<br>
>> when new. IBM is stupidly over priced new (and
used!).<br>
>><br>
>> Just my $0.02<br>
<br>
_______________________________________________<br>
Ale mailing list<br>
<a moz-do-not-send="true" href="mailto:Ale@ale.org">Ale@ale.org</a><br>
<a moz-do-not-send="true"
href="http://mail.ale.org/mailman/listinfo/ale"
rel="noreferrer" target="_blank">http://mail.ale.org/mailman/listinfo/ale</a><br>
See JOBS, ANNOUNCE and SCHOOLS lists at<br>
<a moz-do-not-send="true"
href="http://mail.ale.org/mailman/listinfo" rel="noreferrer"
target="_blank">http://mail.ale.org/mailman/listinfo</a><br>
</blockquote>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Ale mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Ale@ale.org">Ale@ale.org</a>
<a class="moz-txt-link-freetext" href="http://mail.ale.org/mailman/listinfo/ale">http://mail.ale.org/mailman/listinfo/ale</a>
See JOBS, ANNOUNCE and SCHOOLS lists at
<a class="moz-txt-link-freetext" href="http://mail.ale.org/mailman/listinfo">http://mail.ale.org/mailman/listinfo</a>
</pre>
</blockquote>
<br>
</body>
</html>