Patent ID: 7617369
Filing Date: 2009-11-10
Classification: G06F,Y10S

Abstract:
1. A method comprising: identifying a plurality of secondary nodes; sending an update from a primary node to the plurality of secondary nodes, wherein in response to receiving the update from the primary node, causing the at least one secondary node to insert the update in a respective log of updates, wherein in response to inserting the update in the respective log of updates, causing the update to be copied from the respective log of updates to a storage area at the least one secondary node; sending an acknowledgement from the at least one secondary node to the primary node, wherein determining that all of the plurality of secondary nodes have acknowledged the update; and in response to the determining, causing each secondary node of the at least one secondary node to clear the update from the respective log of updates by sending a notification to each of the plurality of secondary nodes once all of the plurality of secondary nodes have acknowledged the update, wherein the clearing is performed in response to receiving the notification.