Adjusting timestamps to preserve update timing information for cached data objects

Adjusting timestamps to preserve update timing information for cached data objects

In a system including a host, a primary storage subsystem coupled to the host, a cache coupled to the host and separate from the primary storage system, a secondary storage subsystem, and a data mover coupling the primary and secondary storage systems, data is temporarily cached for future storage i...

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Bibliographische Detailangaben
Hauptverfasser: Geiner, Robert Vaughn, Kern, Ronald Maynard, McBride, Gregory Edward, Micka, William Frank, Nick, Jeffrey Mark, Perry, Larry Richard, Petersen, David B, Shackelford, David Michael, Slone, Harold Glen, Yudenfriend, Harry Morris, Zobre, Douglas M
Format: Patent
Sprache:eng
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Zusammenfassung:In a system including a host, a primary storage subsystem coupled to the host, a cache coupled to the host and separate from the primary storage system, a secondary storage subsystem, and a data mover coupling the primary and secondary storage systems, data is temporarily cached for future storage in the primary storage subsystem so as to preserve timestamp information and maintain data consistency for asynchronously mirroring the data at a secondary subsystem.