Equivalent Full Cabinets (EFC)


Equivalent Full Cabinets (EFC) is a metric used in the field of data center management to standardize and quantify the utilization of data center floor space. It represents the concept of measuring data center equipment and infrastructure density based on the equivalent number of fully populated server cabinets that occupy the available floor space. EFC is a valuable metric for understanding and optimizing data center capacity planning, resource allocation, and operational efficiency.

Key Aspects of EFC in Data Center Management:

  1. Standardization of Space Utilization: Equivalent Full Cabinets provides a standardized approach to gauge the utilization of data center floor space. By equating equipment deployment to the number of fully populated server cabinets, data center administrators can easily compare space utilization across different deployments and data center facilities.
  2. Calculating EFC: To calculate Equivalent Full Cabinets, data center operators consider the total occupied space on the data center floor and divide it by the space occupied by a fully loaded server cabinet. The result represents the equivalent number of fully populated cabinets that could fit within the available space.
  3. Flexibility in Equipment Deployments: Equivalent Full Cabinets allows data center managers to be flexible in configuring equipment deployments. Rather than requiring complete server cabinets for each deployment, data center resources can be utilized efficiently by adjusting the number of cabinets or using partial cabinets based on the equipment requirements.
  4. Capacity Planning: By using EFC, data center administrators can better plan for future growth and expansion. Understanding the capacity in terms of fully populated cabinets helps in estimating space requirements and making informed decisions regarding data center investments.
  5. Resource Optimization: Equivalent Full Cabinets enables data center managers to optimize resource allocation, ensuring that valuable floor space is utilized efficiently. It also aids in identifying underutilized areas, which can be consolidated or repurposed for other purposes.

Benefits of Equivalent Full Cabinets:

  1. Improved Efficiency: EFC helps data centers achieve higher equipment and infrastructure density, leading to improved operational efficiency and reduced energy consumption per unit of computing power.
  2. Simplified Capacity Management: By quantifying space utilization in terms of EFC, data center managers can easily monitor and manage capacity, avoiding potential over- or under-provisioning of resources.
  3. Cost Savings: Optimizing resource allocation and space utilization through EFC can lead to cost savings, as data centers can avoid unnecessary expansions or wasteful use of floor space.
  4. Scalability and Future-Proofing: EFC provides valuable insights for data center growth planning, allowing for better scalability and future-proofing of the data center infrastructure.


Equivalent Full Cabinets (EFC) is a significant metric in data center management that standardizes and quantifies the utilization of floor space based on fully populated server cabinets. By employing EFC, data center administrators can optimize resource allocation, enhance operational efficiency, and make informed decisions regarding capacity planning and facility expansion, resulting in a more efficient and effective data center environment.

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