Veritas Technologies LLC

Cohesity, Inc.

Vishal Thakur

Rushikesh Patil

Sunil Hasbe

A method and system for data consistency across failure and recovery of infrastructure. In one embodiment of the method, copies of first data blocks stored in a source memory are sent to a target site via a data link. While sending one or more of the copies of the first data blocks to the target site, source hashes for second data blocks stored in the source memory are calculated, wherein the first data blocks are distinct from the second data blocks. While sending one or more of the copies of the first data blocks to the target site, target hashes of data blocks stored in a target memory of the target site are received. While sending one or more of the copies of the first data blocks to the target site, the source hashes are compared with the target hashes, respectively. After sending the first data blocks to the target site via the data link, copies of only those second data blocks are sent to the target site with source hashes that do not compare equally with respective target hashes.

Method and system for data consistency across failure and recovery of infrastructure

Methods, computer program products, computer systems, and the like are disclosed that provide for scalable deduplication in an efficient and effective manner. For example, such methods, computer program products, and computer systems can include determining, at a source site, whether metadata has been received from a target site, and, in response to a determination that the metadata has been received at the source site, retrieving the at least one unit of the source data from the source data store using the metadata and sending, from the source site, the at least one unit of source data to the target site.

Methods and systems for data resynchronization in a replication environment

Methods, computer program products, computer systems, and the like are disclosed that provide for scalable deduplication in an efficient and effective manner. For example, such methods, computer program products, and computer systems can include tracking one or more write operations executed on a target data store and sending metadata regarding the one or more write operations to a source site. The tracking comprises storing information regarding the one or more write operations in a data structure. The one or more write operations cause one or more units of data to be written to the target data store. The target data store is at a target site. The metadata comprises the information.

The disclosed computer-implemented method for replicating information with information retention systems may include (1) queueing information communicated between a virtual machine and a source storage device, (2) initiating creating a clone of the virtual machine, (3) sending update information sets, (4) inserting a flush marker into a network queue, (5) stopping the queueing of the information communicated between the virtual machine and the source storage device, (6) sending, after sending the update information sets, the flush marker via a source replication gateway to the target server computing device, (7) pausing replication of the source storage device, (8) resuming replication of the source storage device responsive to completing creating the clone of the virtual machine, and (9) sending, to the target server computing device, additional information communicated between the virtual machine and the source storage device after stopping the queueing. Various other methods, systems, and computer readable media are also disclosed.

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Pune, India

Vishal Thakur