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Unified Redundant Battery Backup Unit

IP.com Disclosure Number: IPCOM000237003D
Publication Date: 2014-May-26
Document File: 2 page(s) / 60K

Publishing Venue

The IP.com Prior Art Database

Abstract

Battery based cache and capacitor based flash write back mechanism are prevalent cache data protection technology on non-volatile DIMM and RAID controllers. Every single cache controller of non-volatile DIMM or RAID controllers uses its own battery/capacitor for its own data protection. However, this simple and straight forward mechanism brings following problems to server system from a top to bottom of view. Disclosed is a technology related to unified redundant battery backup unit.

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Unified Redundant Battery Backup Unit

Battery based cache and capacitor based flash write back mechanism are prevalent cache data protection technology on non-volatile DIMM and RAID controllers. Every single cache controller of non-volatile DIMM or RAID controllers uses its own battery/capacitor for its own data protection. However, this simple and straight forward mechanism brings following problems to server system from a top to bottom of view.


1. Any battery/capacitor failure causes data lost of the cache controller.

2. Multiple batteries/capacitors creates capacity and thermal issues in system chassis, especially for 1U server.

3. Loading of each battery/capacitor cannot be balanced to achieve higher efficiency.

All the common write back cache controllers should be parallel connected electronically to stay in the same power zone. Common batteries/capacitors should also be parallel connected to share their power loading and organize a power pool. The power pool is handled via a battery manager module to offer redundant power support capability and to sustain the power consumption of the power zone.

The advantages of the disclosure brings.

1. Common batter/capacitor pool provides more robust protection to each write back cache when battery failure occurs.

2. Provide N+M redundant backup power capability to all cache controllers.

3. Consolidated battery manager module provides better power balance and efficiency on charging.

4. Staking batteries/capacitors stru...