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Tagging onto this - does the same go for your out-of-band equipment?
(those that have it)<br>
<br>
Cheers, <br>
Ken<br>
<br>
<div class="moz-cite-prefix">On 29/08/17 09:23, Nick Pratley wrote:<br>
</div>
<blockquote
cite="mid:F1BD7112-C4DD-4EE2-B4F4-235767723724@sauintra.net"
type="cite">
<style>
@-ms-viewport {
width: device-width;
}
</style>Hey James,
<br>
<br>
We do something similar and have found that if you mount the
switches in the middle of the racks at the back – at least with
the APC PDUs we use there is nothing in the way – tend to mount
them where the screen is on the rails. Just enough room for 3
switches there.
<br>
<br>
Top switch for servers in the top half, middle switch for IPMI /
drac and the bottom switch for the servers in the bottom half. It
works quite well, the cabling is nice and neat and doesn’t get in
the way of anything.
<br>
<br>
Regards,
<br>
Nick
<br>
<br>
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<span style="font-family: arial, helvetica,
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<span style="font-family: arial, helvetica,
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15px;"><strong>Senior Network Operator</strong></span></p>
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On 29/8/17, 9:11 am, "AusNOG on behalf of Peter Tiggerdine"
<a class="moz-txt-link-rfc2396E" href="mailto:ausnog-bounces@lists.ausnog.netonbehalfofptiggerdine@gmail.com"><ausnog-bounces@lists.ausnog.net on behalf of
ptiggerdine@gmail.com></a> wrote:
<br>
<br>
Depends on the way the fans spins and what's best for thermal
dynamics.
<br>
<br>
Some of the Cisco, juniper and Brocade kit you can get fans that
spin
<br>
in either direction. if so then I tend to put ports in the cold
isle
<br>
and suck the air through the switch by preference. This is largely
to
<br>
carter for hot SFP's like QSFP's, XENpacks etc.. and the like.
Also
<br>
working in the cold isle tends to be easier.
<br>
<br>
Cables passing through the racks isn't a bad thing as long as rack
<br>
dimensions carter for it (yes Fuj I'm looking at you >:( ).
<br>
<br>
Regards,
<br>
<br>
Peter Tiggerdine
<br>
<br>
GPG Fingerprint: 2A3F EA19 F6C2 93C1 411D 5AB2 D5A8 E8A8 0E74 6127
<br>
<br>
<br>
On Tue, Aug 29, 2017 at 9:02 AM, James Cunningham
<a class="moz-txt-link-rfc2396E" href="mailto:jjazza26@gmail.com"><jjazza26@gmail.com></a> wrote:
<br>
> Hi Guys,
<br>
>
<br>
> This is an age old discussion that I have had with many
people over the
<br>
> years, but am keen to find out what other people think about
installing
<br>
> switches into data centre racks.
<br>
>
<br>
> Say for example you have 4 network switches to install into a
rack (standard
<br>
> 600mm rack), along with 20-30 1RU and 2RU servers.
<br>
>
<br>
> Would you install the switches facing forwards, or install
the switches
<br>
> facing backwards?
<br>
>
<br>
> The way I see it, there are various pros and cons of each
approach:
<br>
>
<br>
> FORWARD FACING
<br>
> PROS
<br>
> Easy to install and remove the switch from the front of the
rack, as power
<br>
> cords are not in the way
<br>
> Most switches expect this installation for air flow, but some
switches do
<br>
> have reversible fans.
<br>
>
<br>
> CONS
<br>
> You must route the cables from the front of the rack, to the
back of the
<br>
> rack where the server network ports are, leading to cable
clutter within the
<br>
> rack.
<br>
>
<br>
> REAR FACING
<br>
> PROS
<br>
> Cable distance and cable mess going from the switches to the
servers is alot
<br>
> less.
<br>
>
<br>
> CONS
<br>
> When it comes to removing the switch, it's very difficult
with a fully
<br>
> loaded rack, as the power cables tend to get in the way from
the vertical
<br>
> PDUs at the back.
<br>
>
<br>
> Has anyone else had some detailed thoughts about the best way
to rack mount
<br>
> data centre network switches?
<br>
>
<br>
> Thanks in advance.
<br>
>
<br>
> James
<br>
>
<br>
>
<br>
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