Data Center Setup

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Introduction to Data Centers

Overview: What is a Data Center?

A data center (per ANSI/TIA-942) is a building or portion of a building whose primary function is to house a computer room and its support areas. A data center’s main functions are to consolidate, manage, and disseminate information technology (IT) or information communication technology (ICT) resources. This includes housing and supporting a network for data processing and operational hosting that provides services such as application and internet access, content distribution, database management, file storage, and data backup. All these services work together to facilitate e-Business among various businesses, consumers, and other administrations (e.g., government agencies). Some typical software services include:
In addition to traditional data center services, modern data centers lead the market in search technologies, social networking, and mobile applications, as well as e-commerce. These services extend into the more general world of “cloud computing,” as delineated by Infrastructure-, Platform-, and Software-as-a-Service (IaaS, PaaS, and SaaS), where traditional aspects of onpremises services can be outsourced. Figure 1 demonstrates the level of control and management each e-Business service type requires from its target customer. These services run the gamut and include applications, data management, runtime optimization, middleware, O/S, virtualization, server hosting, storage, and complete networking.
Beyond information services, data centers also exist as a physically secure facility for uninterrupted service to mission-critical operations. As a result, data centers must ensure the following to provide overall system reliability, resiliency, and redundancy: ■ Around-the-clock network availability ■ Fail-safe power ■ Environmental (including HVAC) controls ■ Fire suppression ■ Fault detection and monitoring ■ Access control, security, and surveillance ■ A high-performance fiber optic cabling infrastructure Data centers were traditionally designated as either enterprise (e.g., corporate) or carrier (e.g., internet) hosting facilities, depending on if they existed to support the private or public domain. Enterprise data centers are privately owned and operated by companies, institutions (e.g., universities), governments, or other business entities and organizations. Enterprise facilities provide internal data transactions and processing, web-based services through either intranets or extranets, and are supported and managed by internal IT support. Carrier data centers are traditionally owned and operated by “TELCOs,” traditional telephone companies or telecommunications service providers, or unregulated competitive service providers who serve the greater public and offer outsourced IT services through internet access. These facilities are usually either colocation (co-lo) or multitenant data centers (MTDC), where space is rented out to various clients to host services and/or provide networking equipment to connect to a service provider. Space can be allocated according to need, whether it’s just a server rack or cabinet, a complete purpose-built cage, or an entire data hall.

Data Center Functional Areas

Returning to the architectural aspects of a data center facility, the functional areas and typical components of a data center can be broken down into the following zones with their respective physical and logical network communication roles:.
1. Wide Area Network (WAN) Connectivity
■ Physical: Service/access provider network demarcation ■ Logical: Network (“internet”) packet routing
2. Local Area Network (LAN) Connectivity
■ Physical: Customer/client server front-end access ■ Logical: Data link frame switching and routing
3. Storage Area Network (SAN) Connectivity
■ Physical: Data volume device back-end access ■ Logical: Data link frame switching and block-level transfers

Data Center Design Considerations

Common requirements for data centers are influenced by all of the following considerations: ■ Architectural ■ Electrical ■ Environmental ■ Fire protection ■ Water infiltration ■ Access and physical security ■ Overall energy efficiency, which might be the single-most critical factor in successful data center design
To better understand these considerations, consult the ANSI/TIA-942-B Telecommunications Infrastructure Standard for Data Centers and other industry available resources, such as BICSI’s data center design and implementation best practices and standards.*
Organizations such as ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) can also offer overall insights on energy standards and commissioning for data centers. ASHRAE provides verification and documentation methods for ensuring that the facility and all of its systems and assemblies are planned, designed, installed, tested, operated, and maintained to meet owner requirements.
Other sources of information for the design, installation, and operation of data centers include the Uptime Institute, LEED (Leadership in Energy and Environmental Design), and AFCOM (Advancing Data Center and IT Infrastructure Professionals).
This guide is not intended to be a comprehensive handbook on facility construction and planning or the design and maintenance of the relevant systems. These are comprehensive and coordinated project management and professional engineering undertakings that bear on multiple industry standards, codes, and regulations
Rather, this guide focuses on the relevant telecommunications aspects, including data center pathways, spaces, and related topologies, as well as prevailing fiber optic cabling systems. Adequate planning and consideration during facility construction or renovation are crucial, however, to cost-effectively support growth and changes in the data center telecommunications infrastructure.
Lastly, this guide is not intended to guide the complete cost analysis for a data center. There are data center capital cost calculators that allow users to input physical infrastructure parameters toward exploring different cost scenarios. These tools utilize load, redundancy, density, key power, and cooling requirements to determine rack quantities, floor space, and total capital costs. The calculations are usually used to compare how various architectures will operate for specific locations and configurations. Such analyses are typically carried out through the normal bidding process by general construction contractors, subcontractors, and equipment vendors at the design documentation completion levels. For data center project stakeholders or design and construction teams, the cost is naturally the paramount consideration.
All data centers have four key items to consider when evaluating infrastructure with network efficiency as the ultimate goal: 1. Manageability 2. Flexibility 3. Scalability 4. Reliability and Availability

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