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US Patent 11892979 Storage system garbage collection and defragmentation

Patent 11892979 was granted and assigned to Cohesity on February, 2024 by the United States Patent and Trademark Office.

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Patent Applicant

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Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Anubhav Gupta1

Anirvan Duttagupta1

Date of Patent

February 6, 2024

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Patent Application Number

175495991

Date Filed

December 13, 2021

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Patent Citations

US Patent 9734051 Garbage collection and defragmentation for solid state drives (SSD) and shingled magnetic recording (SMR) drives

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US Patent 7996446 Scheduling and performing garbage collection in a real-time system with guaranteed space bounds

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US Patent 8788778 Garbage collection based on the inactivity level of stored data

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US Patent 9189392 Opportunistic defragmentation during garbage collection

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US Patent 9594674 Method and system for garbage collection of data storage systems using live segment records

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US Patent 10191914 De-duplicating distributed file system using cloud-based object store

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Patent Primary Examiner

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CPC Code

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Patent abstract

Metadata of each file of a group of files of a storage and chunk file metadata are analyzed to identify one or more file segment data chunks that are not referenced by the group of files of the storage. Fragmented chunk files to be combined together are identified based at least in part on the one or more identified file segment data chunks. The chunk file metadata is updated with an update that concurrently reflects the removal of at least a portion of the one or more file segment data chunks that are not referenced by the group of files and the combination of the identified fragmented chunk files.

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