by Neil Rasmussen
High density IT equipment stresses the power density capability of modern data centers. Installation and unmanaged proliferation of this equipment can lead to unexpected problems with power and cooling infrastructure including overheating, overloads, and loss of redundancy. The ability to measure and predict power and cooling capability at the rack enclosure level is required to ensure predictable performance and optimize use of the physical infrastructure resource. This paper describes the principles for achieving power and cooling capacity management.
Capacity management is an essential part of the efficient planning and operation of data centers. The need for capacity management grows with the density, size, and complexity of the data center. A methodology for capacity management has been described. It has been shown that capacity management is not dependant on detailed information about the IT devices at the rack level and requires less effort to implement and maintain, compared to traditional detailed inventory management systems, while still providing most of the key benefits. If capacity management is implemented as described in this white paper, it can provide critical information about the state of the data center which is not provided by traditional monitoring systems. When combined with network power and cooling instrumentation, today’s newer DCIM software systems provide the necessary tools for efficient and effective capacity management “out of the box”.