High-performance log-structured RAID

Details High-performance log-structured RAID High-performance log-structured RAID

2006-05-16

2006-05-16

Bragdon, Reginald G. (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S112000, C711S138000, C711S203000, C707S793000, C707S793000, C714S013000

Reexamination Certificate

active

07047358

ABSTRACT:
This invention describes a high-performance, log-structured implementation of a RAID subsystem that can be efficiently implemented in software. The methods described here allow the RAID subsystem to achieve high performance without using specialized hardware such as non-volatile memory or hardware XOR/DMA engines. Furthermore, the RAID implementation described here is well suited for supporting many functions required for advanced storage virtualization such as virtual disks, graceful addition and removal of disks, tolerating multi-disk failures, and snapshots.

REFERENCES:
patent: 6052799 (2000-04-01), Li et al.
patent: 6256705 (2001-07-01), Li et al.
patent: 6732124 (2004-05-01), Koseki et al.
patent: 6865650 (2005-03-01), Morley et al.
patent: 2002/0062422 (2002-05-01), Butterworth et al.

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