The importance of UPS
power for data centers cannot be emphasized more. When most businesses rely on
online connectivity these days, the servers, software and hardware’s central
location is the data centers, which requires uninterrupted power supply. The
traditional UPS systems have used a double conversion system where they take on
alternating current and change it back to direct current. This charges the
batteries and re converts the current back to AC. The traditional UPS systems
use large modules in order to create systems of high capacity.
Today the trend is moving
towards modular UPS. These consist of smaller
modules that make up the larger system of UPS. There are distinct advantages
and disadvantages of the modular approach. The main advantage for which the
modular approach has become popular is that the growth capacity can be adjusted
as per requirement. Indeed, every data center has a varying requirement for
power and usually, with time, the need for power supply increases. The modular
approach reduces the cost of maintenance as well. There is also the matter of efficiency
in the modular design of UPS. The UPS systems run at high efficiency when the maximum
capacity is being utilized. Efficiency drops as the load level is reduced.
Energy saving is a crucial
concern for most data centers. Hence, the UPS systems need to run at optimal
efficiency at all times in order to ensure optimal usage of power. The drop of efficiency
does pose a concern for the data center administrators. As there is increasing
stress on making the data centers energy efficient and eco friendly, choosing
UPS systems that are unable to minimize the use of power can become a concern.
Hence, one needs to weigh the different options available and accordingly they
need to take the decision on the UPS system design that is optimal for the data
center’s operations.