Data storage system and method

Details Data storage system and method Data storage system and method

2011-07-26

2011-07-26

Rutz, Jared I (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S161000, C713S324000

Reexamination Certificate

active

07987318

ABSTRACT:
Disclosed are a redundant data storage system (e.g., a RAID system) and a method of operating such a redundant data storage system that provides significant power savings with minimal reduction in reliability. The system and method allow up to half of the memory devices in any of the memory arrays in the system to be placed in standby without significantly impacting the read accesses. The system and method further designate reserved areas in the active memory devices as write-journals, which have at least the same level of protection as the main arrays. The write-journals allow data to be written without powering up a standby memory device. Thus, power consumption is minimized without impacting reliability.

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