Druva Inc.

A resource allocation map generator generates a resource allocation map for a current data backup and/or restore based on a mathematical model, real-time operating data corresponding to operating states of one or more resources, and historical data corresponding to data back-up and restore of one or more historical datasets. A resource allocation recommender generates a recommendation for resource allocation for the current data backup and/or restore based on the resource allocation map and a threshold value corresponding to a particular resource. A resource allocator dynamically initiates a change in resource allocation based on the generated recommendation.

A file system and a related method are presented. The file system includes a data storage including a plurality of data blocks; a merge index including a plurality of namespace entries, wherein the plurality of namespace entries include a plurality of blockmap entries and a plurality of local reference entries; a deduplication database including a plurality of deduplication indices and a plurality of global reference entries for a plurality of datasets; and an indexing system configured to generate the plurality of namespace entries and the plurality of global reference entries.

System for delivering an event journal during a back-up session in a distributed file system is presented. The system includes an event intake module, a load balancer, a plurality of object creation modules, a journal manager, and a journal service module. Each object creation module of the plurality of object creation modules further includes an ingestor and a drainer. A related method is also presented. The system and method provide for reliable and time-ordered delivery of events in the event journal.

A data management system manages concurrent readers and writers for large file scans. The data management system may read a plurality of data chunks of the file starting from different offsets and generate a bounded number of read requests, which causes a data chuck identifiable by a data offset to be loaded into a data buffer. The system may queue the loaded data chunks for generating write requests to release the loaded data chunks. One or more write requests are generated responsive to one or more data chunks being associated with a consecutive order of data offsets being successfully loaded to data buffers. The system may write data chunks released from the buffer-rounded reading stage to the data storage in a checkpointed writing stage. The checkpointed writing stage creates a checkpoint based on the data offset of the data chunks that have been completely transferred to the data storage.

A data back-up system configured to back-up one or more data sets from one or more devices to a data back-up server by using a proxy pool is presented. The data back-up system includes a load-balancer configured to distribute the one or more data sets across the proxy pool. The load balancer includes a data receiver configured to receive types of files, number of files, and total size of each file in the one or more data sets; a load estimator configured to estimate a weighted average load of each data set based on the number of files, the total size of each file, a compressibility factor for each file type, and an encryption factor for each file type; and a load distributor configured to distribute the one or more data sets as a plurality of workloads across the proxy pool.

A data restore system is provided. The data restore system includes a backup data storage configured to store data for a client and a data restore module configured to receive a restore trigger from the client and to initiate restore operation for selected data from the backup data storage in response to the received trigger. The data restore module is further configured to receive information regarding the selected data to be restored and access a metadata store to receive metadata information for the selected data and provide the metadata information and the downloaded data blocks to a controller to facilitate sorting of the downloaded data blocks based on the files they belong to and store the downloaded restored data to a target data storage. The data restore module is further configured to interact with the checkpointing module to track the progress of restore operation in persistent storage and to minimize rework when restore operation is restarted from interrupt.

A system and a method for client-side deduplication system for a plurality of backup streams, generated by a backup and recovery client from a client database, is presented. The system includes a stream handler configured to generate a unique file name for an underlying file of each backup stream of the plurality of backup streams based on one or more data blocks in each backup stream. The system further includes a file creator configured to create a data file corresponding to each backup stream of the plurality of backup streams in a local cache of a client database server, wherein each data file has a file name corresponding to the unique file name generated by the stream handler. The client-system furthermore includes a dedupe module configured to dedupe subsequent backup streams based on the data files in the local cache.

A system for reference-aware application recreation in a container deployment environment is presented. The system includes a reference detection module configured to detect and store one or more reference paths corresponding to each resource type of a plurality of resources in the container deployment environment; a resource ordering module configured to generate a recreation sequence by ordering the plurality of resources based on corresponding references at the reference paths, such that a referenced resource is recreated before the referring resource; and an application recreation module configured to recreate an application based on the recreation sequence. A related method is also presented.

A file system and a related method are presented. The file system includes a data storage including a plurality of data blocks; a merge index including a plurality of namespace entries, wherein the plurality of namespace entries include a plurality of blockmap entries and a plurality of local reference entries; a deduplication database including a plurality of deduplication indices and a plurality of global reference entries for a plurality of datasets; and an indexing system configured to generate the plurality of namespace entries and the plurality of global reference entries.

A data management system may maintain a total-size counter for the file system. The total-size counter represents a sum of data size related to snapshots backed up to the file system. The data management system may perform data operation cycles to the file system. Each data operation cycle corresponds to a snapshot that includes files. Each data operation cycle may include incrementing the total-size counter by the data size of the files in the snapshot exchanged with the file system and adding, to a snapshot record, the amount of increment in incrementing the total-size counter as an increment-size counter. A data management system may perform a correction operation to correct the total-size counter. The correction operation may change the total-size counter by a difference between the total of the increment-size counters in the snapshot records and the total data size of file data exchanged with the file system.