DC backup power supply system and disk array using same

Details DC backup power supply system and disk array using same DC backup power supply system and disk array using same

2008-07-29

2008-07-29

Puente, Emerson C (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S022000, C713S300000

Reexamination Certificate

active

10951613

ABSTRACT:
In the case where there coexist general loads requiring backup only for a short duration and a specific load requiring backup for a longer duration, uninterruptible power with higher reliability is supplied to the specific load with the adoption of a simple configuration. A DC backup power supply system comprises an AC/DC converter for normally supplying DC power to loads in while (the general loads and the specific load, included), and a control circuit for supplying DC output backing up the loads in whole for relatively short time only from a battery at the time of a power outage, while supplying DC output backing up the specific load, such as a cache memory and so forth, for relatively long time. Thus, it is possible to implement an uninterruptible power supply system small in size and low in cost, provided with a function for proper use depending on a prevailing situation.

REFERENCES:
patent: 5319571 (1994-06-01), Langer et al.
patent: 5381554 (1995-01-01), Langer et al.
patent: 5461263 (1995-10-01), Helfrich
patent: 5585677 (1996-12-01), Cheon et al.
patent: 5889933 (1999-03-01), Smith
patent: 2002/0186576 (2002-12-01), Kanouda et al.
patent: 2004/0073817 (2004-04-01), Liu et al.

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