What Are the Ways to Implement Snapshot? What Are Differences Between Them? How Does the OceanStor 9000 Implement Snapshot?

MonicaUkumto · Created Apr 19, 2017 10:23:06

Copy On Write (COW) and Redirect On Write (ROW) are the two ways to implement snapshot.
COW copies data objects protected by a snapshot to other locations or objects before replacing these data objects with new data, so that the original data objects serve as snapshot data.
ROW writes new data to new locations or objects, instead of replacing the original data protected by a snapshot.
The OceanStor 9000 implements the snapshot function based on metadata COW and data ROW.

user_2919429 · Created Apr 20, 2017 00:50:23

thanks！

What Are the Ways to Implement Snapshot? What Are Differences Between Them? How Does the OceanStor 9000 Implement Snapshot?

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What Are the Ways to Implement Snapshot? What Are Differences Between Them? How Does the OceanStor 9000 Implement Snapshot?

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