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Cost, Speed, and Reliability Tradeoffs between N+1 UPS Configurations

White Paper Published By: Schneider Electric
Schneider Electric
Published:  Nov 11, 2016
Type:  White Paper
Length:  12 pages

There is an increasing trend towards N+1 UPS architectures – rather than 2N – as IT fault tolerance through software continues to improve.

There are two common ways N+1 can be achieved: paralleling multiple unitary UPSs together or deploying a single UPS frame with multiple internal modules configured for N+1 redundancy. In this paper, we quantify key tradeoffs between an internal “modular” redundant UPS and parallel redundant UPSs, and show a 27% capital cost savings and a 1-2 week decrease in deployment time when internal redundancy is deployed.

Discussed here is the importance of fault tolerance within the UPS to ensure availability, reliability, and maintainability needs are met.



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