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Measuring PUE with Shared Resources, Part 1 of 2
Measuring PUE with Shared Resources Last week I wrote a little about measuring the total power in a data center, when all facility infrastructure are dedicated to supporting the data center. Another common situation is a data center in a mixed environment, such as a corporate campus or an office tower, at which the facility resources are shared. The most common shared resource is the chilled-water system, often referred to as the “mechanical yard.” As difficult as it sometimes can be to set up continuous power monitoring for a stand-alone data center, it is considerably trickier when the mechanical yard is shared. Again, simple in principle, but often surprisingly painful […]
Measuring PUE with Shared Resources, Part 2 of 2
PUE in an Imperfect World Last week I started discussing the instrumentation and measurement of PUE when the data center shares resources with other facilities. The most common shared resource is chilled water, such as from a common campus or building mechanical yard. We looked at the simple way to allocate a portion of the power consumed by the mechanical equipment to the overall power consumed by the data center. The approach there assumed perfect sub-metering of both the power and chilled water, for both the data center and the mechanical yard. Lovely situation if you have it or can afford to quickly achieve it, but not terribly common out […]
