Minimizing data loss in asynchronous replication solution using distributed redundancy
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United States of America Patent
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Mar 15, 2011
Grant Date -
Dec 31, 2009
app pub date -
Jun 26, 2008
filing date -
Jun 26, 2008
priority date (Note) -
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Abstract
Architecture that reduces data loss resulting from failover in an asynchronous log shipping deployment, but leveraging mid-tier and frontend servers to fill in lost data. In an asynchronous log shipping operation, a replication component asynchronously replicates messaging data to a backend server in accordance with one or more replication operations, which can be updates to databases on the backend server. These databases can include messaging data, such as email address books, mailboxes, etc. A history component maintains a history of replication operations on a frontend server. In the event of a lossy failover, a replay component is used for replaying the replication operations from the history to the backend server.
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