One other thing that I should mention here is side panels. One big difference between most test equipment and most server-class computer equipment is where the actual air intakes are. On most (most!) server-class computer equipment, the air intakes are on the front. On most (again, most!) test equipment, the air intakes are along the sides. Both typically exhaust to the rear.
Some racks from the computer world have fairly tight-fitting side panels. You can almost always leave them on, but it pays to take a look in there to ensure that there's enough "breathing room" for the vented sides of (usually HP) test equipment to ingest air.
-Dave
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On 11/8/21 5:54 PM, Paul Bicknell wrote:
OK Dave
Regarding the air vents on top I stand corrected and was thinking of Audio
equipment and power supplies
Regarding 100% rack capacity OK for a rack with 1 KW consumption but a rack
with 2 Kw consumption we require a bit of space
And above 2 KW we require a bit of management such as Fans
I think the key line hear is as you say
Be consistent about front-to-back vs. back-to-front cooling, so that one
instrument doesn't ingest another instrument's exhaust, and it's perfectly
fine. (and very common)
Best Regards Paul
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Dave McGuire
Sent: 08 November 2021 22:24
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Placing Shelf on Casters for HP
Equipment
On 11/8/21 4:57 PM, Paul Bicknell wrote:
Plus you cannot pack a 19 inch rack 100 % ?and that is a different
subject if a unit has vent holes on the top you require 1 U space
above or sometimes a fan tray
Vertical cooling goes against every accepted standard for rack-mount
system design. In practice, almost nothing actually does it.
Now watch people will come out of the woodwork quoting one make/model of
thing that does, but my point stands.
For decades I have packed racks 100% full with 24/7-running equipment.
Be consistent about front-to-back vs. back-to-front cooling, so that one
instrument doesn't ingest another instrument's exhaust, and it's perfectly
fine. (and very common)
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
--
Dave McGuire, AK4HZ
New Kensington, PA
Dave McGuire