| US 7,490,205 B2 | ||
| Method for providing a triad copy of storage data | ||
| Michael T. Benhase, Tucson, Ariz. (US); Michael H. Hartung, Tucson, Ariz. (US); Yu-Cheng Hsu, Tucson, Ariz. (US); Carl E. Jones, Tucson, Ariz. (US); William G. Verdoorn, Jr., Rochester, Minn. (US); and Andrew D. Walls, San Jose, Calif. (US) | ||
| Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
| Filed on Mar. 14, 2005, as Appl. No. 11/79,791. | ||
| Prior Publication US 2006/0203718 A1, Sep. 14, 2006 | ||
| Int. Cl. G06F 12/00 (2006.01) | ||
| U.S. Cl. 711—162 | 7 Claims |
| 1. A method for increasing data reliability in a storage system, comprising:
storing first primary data at a first primary node;
mirroring a copy of the first primary data to a first redundancy partner node and to a first backup partner node;
storing second primary data at said first redundancy partner node operating also as a second primary node; and
mirroring a copy of the second primary data to said first primary node operating also as a second backup partner node, and
to said first backup partner node operating also as a second redundancy partner node.
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