Redundant 500W 80 PLUS® PSU:
Redundant power supplies are commonly used in high end computing servers that cannot afford to go offline.
A redundant power supply consists of an active enclosure that contains two or more adjacent, hot-swappable power supply modules. These modules operate independently of one other and only one of them actively powers the server while the other stands by. Should a module fail the companion module seamlessly takes over without power interruption. Because of its modular design, the failed module can then be replaced with a new one, also without power interruption. This feature protects the system from the damage, data loss, and business interruption that can result from an unexpected shutdown.
Advatronix Systems recommends a redundant power supply for best performance and relability.