Asynchronous remote replication of snapshots

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11755230
APP PUB NO 20220342549A1
SERIAL NO

17237171

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Abstract

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Snapshots may be remotely replicated asynchronously from a first LSU (R1) on a first storage system (A) to a second replica LSU (R2) on a second storage system (A2). The storage system A1 may open a consistency window to suspend initiating processing of new write operations received on A1. While the consistency window is open, A1 may: take a first snapshot, SS11, of R1; record, in association with the first replication cycle, an indication to replicate SS11 on A2; and initiate a next replication cycle to record write operations of the next new write requests to be received from hosts. After initiating a next replication cycle, A1 may close the consistency and transmit the first replication cycle to A2. A2 may apply the write operations of the first replication cycle to R2, and then take a second snapshot SS12 of R2, which should be a replica of SS11.

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Patent Owner(s)

  • EMC IP HOLDING COMPANY LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adams, Ian Cambridge, US 6 35
Bora, Bhaskar Shrewsbury, US 18 28
Wilson, Jeffrey Franklin, US 78 959

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