APC White Papers

The Different Types of UPS Systems

There is much confusion in the marketplace about the different types of UPS systems and their characteristics. Each of these UPS types is defined, practical applications of each are discussed, and advantages and disadvantages are listed. With this information, an educated decision can be made as to the appropriate UPS topology for a given need.

Sponsor: APC

Effect of UPS on System Availability

This white paper explains how system availability and uptime are affected by AC power outages and provides quantitative data regarding uptime in real-world environments, including the effect of UPS on uptime.

Sponsor: APC

Preventing Data Corruption in the Event of an Extended Power Outage

Despite advances in computer technology, power outages continue to be a major cause of PC and server downtime. Protecting computer systems with Uninterruptible Power Supply (UPS) hardware is part of a total solution, but power management software is also necessary to prevent data corruption after extended power outages. Various software configurations are discussed, and best practices aimed at ensuring uptime are presented.

Sponsor: APC

A Scalable, Reconfigurable, and Efficient Data Center Power Distribution Architecture

Significant improvements in efficiency, power density, power monitoring, and reconfigurability have been achieved in data center power distribution. The past techniques of massive transformer-based power distribution units feeding under-floor hardwired circuits via rigid or flexible conduit are shown to be obsolete. This paper explains some the newer approaches to power distribution including modular power distribution and overhead power busway, and shows their advantages when compared to the legacy approach.

Sponsor: APC