RE: New Node0 Design - 3D images

["Nigel Giddings" <nigel@xxxxxxxxxxxxxx>]

As you have cabling from below rack you may want to consider racks
with cab=
le management at the sides. The racks are wider but may not be that much
of=
an issue? My racks are standard width and it=92s a bit of a struggle to ge=
t through the cabling at the rear to then get to the rear of whatever is
in=
stalled... By having the extra cable space at the sides of the racks you
ca=
n manage power up one side with signals up the other and not obscure the
ba=
ck of the equipment, which will have enough cabling over it anyway... This
=
may help if rear access is also limited.

Wall mounting kit is good but does limit space between rack and wall
mounte=
d kit. I would seriously consider open tray-work and metal trunking on the
=
wall to carry power and signal cables. Design the wall so these do not
pass=
over each other. You want to be able to run cables that don't have to loop=
over and under things...

I would look into the size of ventilation holes. I would suggest at least
1=
50mm will be required! As you say the effect of this when outside is 35C
is=
limited but hopefully less heat generated with new equipment. Its probably=
more important to maintain constant temperature rather than sudden changes=
. Running at 30C is not the end of the world. It is uncomfortable to work
i=
n for extended periods and UPS batteries will also suffer...

I would go with simple lighting, fluorescent fitted to slopping ceiling,
es=
pecially if RGB is controlled from this room... Maybe use the RGB to dress
=
it up? My Node Zero has a large fluorescent switched by a simple switch. I
=
also have a battery maintained light in case of power failure. My
Generator=
panel is located here and the main fuse board.

I have servers mounted in a data rack, an oversight initially on my
part...=
However would have done the same all things considered. I would suggest th=
e server (deep) equipment should be in the lower cabinet so that you don't
=
need to squeeze past it to get to the other rack... Getting heavy units
(UP=
S) out is an issue, you could need two people with space to stand either
si=
de (L/R) of rack.

As far as fire protection I am still considering the installation of
system=
that uses a pipe routed through the racks which leaks the extinguisher loc=
ally if a fault should occur... Not to many cases of PCs going up in
flames=
these days though.

Nigel

-----Original Message-----
From: Paul Gale [mailto:groups@xxxxxxx]=20
Sent: 07 August 2006 22:50
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] New Node0 Design - 3D images

Thanks Nigel,

I had thought about some of that - others still to think about:

No prices yet but glass will be expensive as it's all fire rated glass!
Tot=
al budget for this project is pretty high!

Cable routes to hopefully come up under the cabinets - maybe with option
of=
closing it off if I sell in the future and the room is needed as very smal=
l single room (bed will fit in there - for a triangular shaped person!)

Some kit will be wall mounted I think - if I decide to re-locate
HomeVision=
kit. I'll probably keep Comfort where it is though on wall of current Node=
0. Maybe allow some extra cable runs for future connectivity between
Comfor=
t and HomeVision.

Ventilation - had planned on forced air cooling into room from under eaves
=
using an in-line fan (quiet sort), expelling further down eaves so as to
no=
t suck in hotter air. Of course, hot days will be a problem but all CPU's
w=
ill be newer Intel Core 2 Duo, so won't generate too much. Still not sure
a=
bout this - don't want to put expensive air con in there!

Not sure about lighting - will be in keeping with the rest of the loft
whic=
h will have a full lighting design done (maybe using my RGB LED
controllers=
and nice sparkly lights!)

Didn't think about server rack  pull-out! Was thinking about access behind
=
(which I don't currently have). I'm limited though as the plan is to have
a=
s big an office as possible and this sets the stair location and hence
Node=
0 size) - so I have to work with what I've got.

Can you fit 4U server racks in data cabinets? Might give me more room.

Fire detection will be additional sensors into existing Comfort - anything
=
else recommended in Node0?

Thanks,

Paul.

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8/8/2006