US Patent Application 17722649. REPLICATION TECHNIQUES USING A REPLICATION LOG simplified abstract

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REPLICATION TECHNIQUES USING A REPLICATION LOG

Organization Name

Dell Products L.P.


Inventor(s)

Vladimir Shveidel of Pardes-Hana (IL)


Vamsi K. Vankamamidi of Hopkinton MA (US)


REPLICATION TECHNIQUES USING A REPLICATION LOG - A simplified explanation of the abstract

  • This abstract for appeared for US patent application number 17722649 Titled 'REPLICATION TECHNIQUES USING A REPLICATION LOG'

Simplified Explanation

The abstract describes a technique for replicating data from a source system to a destination system. When a write operation is directed to a logical device on the source system that is configured for remote replication, the technique performs processing to flush a transaction log entry for the write. It then uses a replication queue to store the write and create a replication log entry. If the content of the write is not already in cache, it retrieves the content from a storage location using a reference obtained from the replication log entry or the replication queue entry.


Original Abstract Submitted

Data replication techniques can include receiving, at a source system, a write directed to a source logical device configured for asynchronous remote replication to a destination system; performing processing that flushes a transaction log entry for the write; and performing replication processing that uses a replication queue including a replication queue entry corresponding to the write that stores the first content to a logical address. The processing can create a replication log entry in a replication log for the write responsive to determining that the write is directed to the source logical device configured for asynchronous remote replication and that the first content has not been replicated. Responsive to the first content not being in cache, the first content can be retrieved using the reference to a storage location storing the first content. The reference can be obtained from the replication log entry or the replication queue entry.

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