Tagging onto this - does the same go for your out-of-band equipment?
(those that have it)
Cheers,
Ken
On 29/08/17 09:23, Nick Pratley wrote:
Hey James,
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.
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.
Regards,
Nick
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On 29/8/17, 9:11 am, "AusNOG on behalf of Peter Tiggerdine"
<[email protected] on behalf of [email protected]>
wrote:
Depends on the way the fans spins and what's best for thermal dynamics.
Some of the Cisco, juniper and Brocade kit you can get fans that spin
in either direction. if so then I tend to put ports in the cold isle
and suck the air through the switch by preference. This is largely to
carter for hot SFP's like QSFP's, XENpacks etc.. and the like. Also
working in the cold isle tends to be easier.
Cables passing through the racks isn't a bad thing as long as rack
dimensions carter for it (yes Fuj I'm looking at you >:( ).
Regards,
Peter Tiggerdine
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On Tue, Aug 29, 2017 at 9:02 AM, James Cunningham <[email protected]>
wrote:
> Hi Guys,
>
> This is an age old discussion that I have had with many people over the
> years, but am keen to find out what other people think about installing
> switches into data centre racks.
>
> Say for example you have 4 network switches to install into a rack
(standard
> 600mm rack), along with 20-30 1RU and 2RU servers.
>
> Would you install the switches facing forwards, or install the switches
> facing backwards?
>
> The way I see it, there are various pros and cons of each approach:
>
> FORWARD FACING
> PROS
> Easy to install and remove the switch from the front of the rack, as
power
> cords are not in the way
> Most switches expect this installation for air flow, but some
switches do
> have reversible fans.
>
> CONS
> You must route the cables from the front of the rack, to the back of
the
> rack where the server network ports are, leading to cable clutter
within the
> rack.
>
> REAR FACING
> PROS
> Cable distance and cable mess going from the switches to the servers
is alot
> less.
>
> CONS
> When it comes to removing the switch, it's very difficult with a fully
> loaded rack, as the power cables tend to get in the way from the
vertical
> PDUs at the back.
>
> Has anyone else had some detailed thoughts about the best way to
rack mount
> data centre network switches?
>
> Thanks in advance.
>
> James
>
>
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