| US 7,542,986 B2 | ||
| System and method for maintaining order for a replicated multi-unit I/O stream | ||
| Clark Lubbers, Colorado Springs, Colo. (US); Susan Elkington, Colorado Springs, Colo. (US); Randy Hess, Colorado Springs, Colo. (US); Stephen J. Sicola, Palmer Lake, Colo. (US); James McCarty, Colorado Springs, Colo. (US); Anuja Korgaonkar, Colorado Springs, Colo. (US); and Jason Leveille, Colorado Springs, Colo. (US) | ||
| Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US) | ||
| Filed on Mar. 26, 2002, as Appl. No. 10/106,905. | ||
| Prior Publication US 2003/0187861 A1, Oct. 02, 2003 | ||
| Int. Cl. G06F 17/00 (2006.01) | ||
| U.S. Cl. 707—102 [707/100; 707/101; 707/103 R] | 12 Claims |
| 1. A method of communicating between storage controllers in a storage area network, the method comprising:
receiving into a first storage controller a data operation from a host computer;
associating a sequence number atomically with the data operation; and
marking the data operation as valid for transmission from the first storage controller to a second storage controller after
the sequence number is atomically associated with the data operation.
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