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AssigneeNetApp, Inc.
InventorsRachita Kothiyal, Atul Ramesh Pandit, Abhishek Naidu, Anil Kumar Ponnapur, Tijin George
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Techniques are provided for performing a resync transfer to recover from a storage site failure. During normal operation of a first site hosting a first volume, data is replicated to a second volume hosted by a second site. If the first site fails, when clients are redirected to the second volume at the second site. When the first site recovers, data modifications made to the second volume are resynced back to the first volume. As part of synchronizing the first volume, a data warehouse is rebuilt at the first site in order to track the location of blocks present on the replication destination. Typically, the data modifications are transferred after the data warehouse is rebuilt, which results in significantly long resync times. The techniques provided herein decrease the resync time by either rebuilding the data warehouse in parallel with resyncing the data modifications or circumvent the need for rebuild.
A method, comprising:
A computing device comprising:
A non-transitory machine readable medium comprising instructions for performing a method, which when executed by a machine, causes the machine to perform operations comprising:
Dependencies are inferred from the claim text.