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Subject: complete 2N UPS systems и UPS modules per side (N) Подскажите, пожалуйста:complete 2N UPS systems A facility with two complete 2N UPS systems of three UPS modules per side (N), six UPS modules per 2N system, and a total of twelve UPS modules in the entire facility would have one 2N UPS system of six UPS modules in the RBD. |
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What is “N”? UPS Design configurations are often described by nomenclatures using the letter “N” in a calculation stream. For instance, a parallel redundant system may also be called an N+1 design, or a system plus system design may be referred to as 2N. “N” can simply be defined as the “need” of the critical load. In other words, it is the power capacity required to feed the protected equipment. IT equipment such as RAID (Redundant Array of Independent Disks) systems can be used to illustrate the use of “N”. For example, if 4 disks are needed for storage capacity and the RAID system contained 4 disks, this is an “N” design. On the other hand, if there are 5 disks and only 4 are needed for storage capacity that is an N+1 design. |
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