An Economical Power Redundancy Solution for Single Inlet Network Devices

Power redundancy is becoming an increasingly important element in many network applications. The reason for this is simple; an intelligently deployed power redundancy solution with automatic power fallback capabilities helps to minimize network downtime and ensure that critical network elements are always available when needed. An effective power redundancy solution helps to reduce the risk of network outages by providing a means to automatically switch over to a back-up power supply in the event that the primary power supply fails, or becomes unstable.

If your existing network equipment includes dual power inlet devices, then implementing a power redundancy or power fallback solution is relatively simple; all you need to do is connect your network devices to a primary power source and a back up power source. Note however, that if your network equipment rack includes single power inlet network devices, then the task of deploying a power redundancy solution can be a little bit more of a challenge. For applications that include existing single inlet network devices, there are generally only two power redundancy solutions available; you can either bite the budget bullet and spend big bucks to replace existing single inlet devices with brand new dual inlet devices, or you can install a transfer switch, which will allow you to continue using your existing devices, but still reap the benefits of an effective power redundancy solution.

Operation of a transfer switch is incredibly simple. Existing single inlet devices are first connected to outlets on the transfer switch and the transfer switch’s two power supply cables are then connected to your primary power supply and backup power supply. After installation, the transfer switch will constantly monitor the primary power supply. If the transfer switch detects that the power supply is unstable or unavailable, the transfer switch will quickly switch over to the back up power supply; in most cases, switching is so rapid that it’s transparent to both users and effected devices alike. A high quality transfer switch can often provide switchover times as rapid as eight microseconds.

In most cases, the transfer switch requires no set up or configuration, other than connecting the switch to your power supplies and single inlet network devices. There is generally no need to reconfigure network devices to be compatible with the transfer switch, and unlike cases where single inlet devices are replaced with dual inlet devices, no need to configure new dual inlet devices to fit existing applications.

An effective power redundancy solution with automatic power fallback capabilities is an important element of any network application that requires continuous user access, regardless of local power conditions. Unfortunately, the high cost of replacing existing single power inlet network devices with dual inlet network devices often leads to a situation where a power redundancy solution is either delayed or overlooked, due to budgetary constraints, resulting in avoidable network outages due to simple power supply problems. A high quality transfer switch enables budget-conscious network administrators to add power fallback and redundancy support to existing network applications, without the high costs and inconvenience associated with changing out single inlet network devices.

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