What is a redundant power solution? Well it’s one where you have more UPS than you actually need to power the load. Typically referred to as an ‘n+1′ redundant solution, where ‘n’ is the number of systems you ordinarily require.
It’s achieved in the main with UPS systems that communicate with each other and effectively share the load. Such systems are usually in the high power three phase category. It is unusual to find any systems at low power ratings that can do this. What’s more, you will need a special output distribution circuit to be able to accommodate this.
For the small business owner, whose dependence on IT is no less valid than major data centre operators this leads to a dilemma, as he needs critical load power protection, but doesn’t have the infrastructure or budget to put in a fully configured n+1 solution.
The answer – the KTS redundant switch from Kehua. This is a rackmounted device occupying no more than 1U of height. It accepts two inputs and provides a single power output that is provided from a primary source. If the primary source should fail, the system will automatically transition to the secondary source within 4 mseconds which is fast enough not to be noticed by any computer type loads.
The primary source should be an online UPS system, and the secondary source can either be another UPS (for full protection) or fed from the mains so you can cover in case anything untoward should happen to the UPS. Of course, there is still the single point of failure on the KTS, but built with reliability in mind it has extremely high MTBF to ensure peace of mind.
Coupled with a KR1000J online double conversion 2U rack mount UPS, you can have a redundant solution for under £350, protecting up to 4 servers and occupying only 3U of rack space. Available in 2KVA, 3KVA and 6KVA modules the KTS redundant switch is an ideal method of achieving redundancy without breaking the bank.
KTS Redundancy Switch Available in 10A, 16A and 32A versions
