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Saving money with smart data center design

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Finding efficient methods of deploying redundancy is paramount especially in multi-tenant and colocation data centers. Here we cover the importance of a design that allows for uptime and the ability to cost-effectively "grow as you go".

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Saving money with smart data center design

  1. 1. © 2015 Eaton. All Rights Reserved.. Saving money with smart data center design
  2. 2. © 2015 Eaton. All Rights Reserved.. 2 Finding efficient methods of deploying redundancy is paramount—especially in multi-tenant and colocation data centers. For sound infrastructure development, consider a design that allows uptime and the ability to cost-effectively “grow as you go”.
  3. 3. © 2015 Eaton. All Rights Reserved.. 3 One way to save money with your data center design is through the use of a UPS catcher system. It provides great levels of redundancy without the costs that come with a 2N system.
  4. 4. © 2015 Eaton. All Rights Reserved.. 4 What is a smart catcher system? • Includes an unloaded UPS in reserve that feeds the bypass of a primary UPS or series of UPSs • Traditionally has a fixed ratio of primary UPSs to catcher UPS not usually exceeding 3:1 due to fixed controls not allowing for intelligent operation
  5. 5. 5© 2015 Eaton. All Rights Reserved.. Traditional design: Isolated redundant • A single redundant system (the catcher UPS) backs multiple primary systems (UPSs 1-3) • Operates off a single bypass feed • Affordable, but with the potential for stranded redundancy • Requires SCADA/PLC control or expensive down-stream static switches for proper system operation Catcher UPS Utility UPS 1 UPS 2 UPS 3 The traditional catcher system operates with a 3:1 ratio. If the utility feed fails, it kicks into bypass mode, transitioning UPSs 1-3 to the catcher UPS.
  6. 6. © 2015 Eaton. All Rights Reserved.. 6 An improvement to the traditional system • A built-in control system (the catcher’s brain) can allow catchers to achieve ratios in excess of 10:1 and use unlike-sized primary UPSs • Using this “brain,” the catcher evaluates power consumption of the primary units and calculates which loads can be supported • This adds logic and redundancy decision making to the bypass switchover
  7. 7. 7© 2015 Eaton. All Rights Reserved.. Logic and redundancy decision making Example • Catcher UPS is a 500 kVA unit • UPSs 1 and 2 are loaded with 200 kVA each • UPSs 3 and 4 are loaded with 400 kVA each • UPS 1 fails and its 200 kVA load is now supported by the catcher UPS BIB – Bypass input breaker CIB – Catcher input breaker UPS 1 UPS 2 UPS 3 UPS 4 Catcher UPS 500 kVA 400 kVA400 kVA200 kVA200 kVA Utility X BIB CIB BIB CIB BIB CIB BIB CIB
  8. 8. 8© 2015 Eaton. All Rights Reserved.. Logic and redundancy decision making • UPSs 3 and 4 transfer their sources from CIB to BIB, phase locking with their utility sources • CIB to BIB state change happens automatically because the loads from either UPS 3 or 4, in addition to the 200 kVA already supported, will overload the catcher UPS • UPS 2 maintains its support from the catcher UPS—this reserve unit has available capacity to support the load from UPS 2 in addition to the load it is already supporting BIB – Bypass input breaker CIB – Catcher input breaker UPS 1 UPS 2 UPS 3 UPS 4 400 kVA400 kVA200 kVA200 kVA Utility X CIB BIB CIB BIB CIB Catcher UPS 500 kVA BIB CIB BIB
  9. 9. © 2015 Eaton. All Rights Reserved.. 9 Benefits of smart catcher • Can use a graphical user interface to depict system status and operation, allowing for manual control during maintenance or repair • Supports data center expansion over time by deferring capital and limiting maintenance costs to just what’s needed • Provides maximum operational flexibility since none of the UPSs need to be the same capacity or fed from the same source • Eliminates the need for downstream dual source static transfer switches, saving money on equipment cost, real estate and maintenance
  10. 10. © 2015 Eaton. All Rights Reserved.. 10 Eaton’s catcher systems are highly reliable thanks to: • The Power Xpert 9395 UPS’s built-in redundancy • A redundant controller for determining primary UPS operations • If the controller goes out, UPSs close their bypass input breakers and open their catcher input breakers • This makes them independent of system control and the other UPSs
  11. 11. © 2015 Eaton. All Rights Reserved.. 11 A smart catcher with logic decision making can go a long way in providing a flexible, reliable and expandable system that can deliver the highest availability in the market. For other smart data center designs that can help save money, check out our prefabricated power solutions.

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