{% set baseFontFamily = "Open Sans" %} /* Add the font family you wish to use. You may need to import it above. */

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{% set textColor = "#565656" %} /* This sets the universal color of dark text on the site */

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{% set baseFontWeight = "normal" %} /* More than likely, you will use one of these values (higher = bolder): 300, 400, 700, 900 */

{% set headerFontWeight = "normal" %} /* For Headers; More than likely, you will use one of these values (higher = bolder): 300, 400, 700, 900 */

{% set buttonRadius = '40px' %} /* "0" for square edges, "10px" for rounded edges, "40px" for pill shape; This will change all buttons */

After you have updated your stylesheet, make sure you turn this module off

Return Plenum Management: What You Need to Know

by Katy Plant on August 12, 2021
Upsite Technologies has provided this blog post about return plenum management as an educational resource for curious readers. Check it out below.
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Many years ago, it was important to stress the necessity of ignoring return air- at least, ignore it after it was isolated from the rest of the data center. It’s out of the room, so it may as well be forgotten about.

In those days, the concept of cooling was fairly simple and straightforward. There was no dichotomy of comfort cooling versus data center cooling.

Addressing the model of comfort cooling was an easy starting point: room temperature was controlled by a thermostat that responded to the return air temperature. 

Yet, the need to identify some distinctions between these two models appeared as data center cooling slowly became both an art and a science. The point of departure was that with better airflow management practices, return air could be isolated from the data center with no impact on its data communications hardware. 

This realization opened a door into new discussions between operators about the benefits of supply set-points and server inlet control points, as well as exploiting the periodically-relaxed, maximum-operating temperature thresholds of the equipment.


Best practices developed to separate supply and return air within each data center as completely as possible, and those practices extended into plenum as well.

If return plenum was just repurposed space above a suspended ceiling, then the ceiling barrier itself should have maintained the integrity of supply and return air separation.

There were no longer any mysteries present – no missing ceiling tiles or vents, other than in hot aisles and in some form of plenum extension attached to the CRACs or CRAHs.

This learned discipline meant that sealing unused rack units, cable access ports, and non-standard flow paths should have always been applied to the return plenum as well.

Continue reading on Upsite's webpage.


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Contact your local Accu-Tech representative to learn more about Upsite solutions, or check out their vendor page here. 




Topics: upsite plenum data center cooling comfort cooling

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