Emc IP Holding Company LLC

Zion Drori

Jehuda Shemer

Maxim Drobachevsky

Lev Ayzenberg

One example method includes optimizing client-side deduplication. When backing up a client, a cadence and a change log resolution are determined. These values are evaluated alone or in combination with respect to various thresholds. Client-side deduplication is enabled or disabled based on whether any one or more of the thresholds are satisfied.

Optimized client-side deduplication

One example method includes optimizing client-side deduplication. When backing up a client, an overwrite ratio is determined based on a size of actual changes made to a volume and a size indicated by changes in a change log. Client-side deduplication is enabled or disabled based on a value of the overwrite ratio.

A method for storing progress data while replicating a snapshot is disclosed. The operations comprise: determining blocks in a storage object that are different between a first and a second snapshots, wherein the first snapshot corresponds to a first tree structure, and the second snapshot corresponds to a second tree structure; and replicating the second snapshot to a remote storage system, comprising replicating all the blocks in the storage object determined to be different between the first and the second snapshots, wherein the replicating further comprises: upon completion of replication of each data slice, determining nodes in the first tree structure that reference only already-replicated blocks; orphaning all such nodes in the first tree structure; and subsequently, updating the first tree structure, comprising merging the first tree structure and the second tree structure, wherein the first tree structure is updated upon completion of replication of each data slice.

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Herzliya, Israel

Zion Drori