Key Considerations for Implementing UPS in Data Center Infrastructure

In data centers, UPS equipment provides backup power to protect against power disruptions, such as sags and surges that can damage connected hardware. It also bridges the short-term gap between commercial utility power and the onset of generator operation.

Datacenter UPS systems can be configured in various ways to provide redundancy and scale as load capacity grows. Systems engineers can help customers determine the correct configuration for risk tolerance and resiliency requirements.

Redundancy

Data centers rely on UPS systems to protect against power surges and fluctuations that can damage hardware or corrupt files. In addition to providing backup power, UPSs prevent downtime by maintaining connected equipment during a power disruption. UPS systems are available in various capacities, depending on the runtime requirements of critical equipment and the facility’s power quality needs. Power consumption for UPSs is usually measured in kVA or VA (volt-amperes), which can be determined by dividing total energy usage by the equipment’s power factor or multiplying wattage by voltage.

UPS systems can be configured with varying levels of redundancy, which helps minimize the impact of power interruptions and maintenance outages. A redundancy model, for example, ensures enough power, backup, and cooling of the facility at full IT load. To achieve this, redundant units that operate in parallel and share 80% of their capability are installed.

Many double-conversion online UPSs also feature an internal automatic static transfer switch that enables the system to automatically transfer to bypass in case of a problem or fault, preventing the need for a human technician to intervene and save equipment manually. An external maintenance bypass, a piece of switchgear that allows the critical load to be manually transferred from the UPS to a bypass source for safe maintenance work, is also commonly used.

Scalability

The scalability of UPS systems allows companies to tailor their power protection in concert with current and future growth. In addition, UPSs have evolved to attain high efficiency with smaller footprints and improved battery energy storage using new lithium-ion technology. Many UPSs also incorporate advanced monitoring and predictive maintenance capabilities, which can reduce operational costs and improve reliability.

In ensuring seamless operations, especially during power interruptions, it relies on critical infrastructure such as UPS for data centers, which provides an uninterrupted power supply to safeguard against potential disruptions.

A centralized UPS system is inserted between a commercial power source and the primary power input of IT equipment. It provides backup power in the event of a power outage. It may also regulate the incoming ability to smooth out fluctuations that could damage data center equipment or cause it to shut down unexpectedly, losing sensitive information.

Most UPSs are designed with a specific power capacity (measured in watts) that supports the load of all connected devices. A UPS with a higher wattage can support more devices and provide more protection against power outages and voltage spikes.

The scalability of UPS systems also extends to the level of redundancy, with options for N+1 and 2N solutions that guarantee uptime. With N+1 redundancy, an additional UPS module is added to the original design so that if one UPS fails, another can take over and prevent data loss. Many UPSs are also equipped with an external maintenance bypass, allowing manual transfer of critical power to a backup source for safe and efficient maintenance work.

Efficiency

Power-quality issues like surges, spikes, and dips can disrupt data center operations. UPS systems can be configured to detect these anomalies and automatically transfer critical loads to backup power before they cause any damage, which protects the equipment and allows IT staff to shut down other systems safely. They can also act as a filter, refining the electricity coming into the UPS and adjusting its output so that internal equipment gets a clean energy supply free of anomalies.

Most data centers rely on double-conversion online UPS systems that can deliver high reliability with a small footprint. They use batteries or flywheels to store energy and an inverter to convert DC power into AC power. These UPS systems can even work with the electrical grid in some regions, allowing them to balance the system’s power and earn money from tariff-based schemes.

Many older UPS systems were oversized for expected growth that never materialized, resulting in wasted electricity costs. Newer UPS systems can increase efficiency by 7-10%, saving thousands of dollars in running costs over the system’s lifespan. Some models have a modular design that can be scaled to accommodate future needs, further reducing upfront capital expenses and operating costs. They can also be integrated into data center infrastructure management systems to monitor and manage them remotely.

Maintenance

Having UPS in place prevents power fluctuations and outages that can cause equipment damage and lead to data loss. The centralized backup architecture of UPS systems helps keep power flowing during these disruptions and reduces the likelihood of data corruption.

Choosing the correct UPS capacity, measured in kVA (kilovolt-amperes) and watts, is critical to ensuring reliable power protection for data centers. This is done by calculating the total load of devices connected to the UPS system, including servers, storage systems, and networking gear. It’s often able to slightly oversize the capacity for future expansion.

Many single-phase UPS models feature a built-in LCD control panel for monitoring voltage, frequency, and other power-related conditions. Some network cards enable remote monitoring and management. These features make it easier for IT staff to respond to potential issues and ensure resiliency, efficiency, and regulatory compliance.

A UPS system intercepts small power fluctuations and provides even electricity, which extends the lifespan of equipment like servers and network cables. This is especially important for data center equipment, which is sensitive to fluctuations in power quality. Some UPS systems have RJ11 or RJ45 receptacles that provide surge protection to connected phones, networks, and coaxial equipment to protect against power line surges. This helps to prevent damaging power surges that could otherwise disrupt data-processing equipment and cause costly downtime.