Invention Grant
US07818522B2 Apparatus, system, and method for incremental resynchronization in a data storage system 有权
用于数据存储系统中增量重新同步的装置,系统和方法

Apparatus, system, and method for incremental resynchronization in a data storage system
Abstract:
An apparatus, system, and method are disclosed for performing an incremental resynchronization between two unrelated volumes when a third volume fails. The apparatus, system, and method include initiating registration of changed tracks; keeping track of bytes in flight activities between a local volume and an intermediate volume; recording the changed tracks in bitmaps at the local volume; stopping the recording of the changed tracks; and starting a resynchronization process by sending the changed tracks to a recovery volume.
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