You are using top-of-rack switches? if so, wire the server at rack
elevation 1 to switch port 1, second to 2 and so on. Consistency is your
friend. Do you have KVM/LOM on each? Get a second cheap switch for that
(I like HP procurve 10/100 - they are managed, but inexpensive, why
waste a gigabit port - uplink it to your gige switch).
color code the LOM/KVM cable and the data cable.
Run 208V or 220V power to everything.
Labelling the cables doesn't hurt, but if you have port 1 going to
server 1, it's just extra niceness. The top is more important than the
bottom. You might have to replace one server at a time, so it's easy
that the cable is right there, or you might have to replace the whole
switch in which case you have 40 cables, and they should be labelled.
Since the fans all blow in the same direction, I don't think hottest
server at the top makes much difference. It more depends upon your
cooling architecture than anything. Heavy on the bottom is important.
On 7/5/2011 6:26 PM, Paul Graydon wrote:
Hi all,
So I've got a great opportunity, and a day of fun ahead. We're going to
be moving from our current co-lo facility to one that's far superior
(what.. you mean I'll actually get an SLA on power and cooling?!) We're
also taking the opportunity to expand out to two cabs instead of one,
something that's looking rather necessary.
So with the new opportunity I've got a chance to lay things out
according to best practices, which I'm aware are rather fluid. So I'm
curious to hear what peoples "I wish I'd done xyz" advice is. For
example, recently I've heard people talking about racking hottest
servers near the top of the cab.
Mostly I think my predecessors have got it right, neat cabling, clear
labeling, colour coded based on network (e.g. DMZ red, internet white
etc.) but there are a few possibilities to improve on things.
Paul
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