# US 2021/0278977 A1 · Method and system for performing data deduplication and compression in a data cluster > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0278977 A1 - Document ID: US20210278977A1 - Status: Published application - Kind: A1 - Application number: 16/810,932 - Filed: 2020-03-06 - Published: 2021-09-09 - Earliest claimed: 2020-03-06 - Assignees: Dell Products L.P. - Applicants: Dell Products L.P. - Inventors: Dharmesh M. Patel; Ravikanth Chaganti; Rizwan Ali - Web page: https://patentgrep.com/patent/US20210278977A1 ## CPC - G06F 3/0619: {in relation to data integrity, e.g. data losses, bit errors} - G06F 3/0608: {Saving storage space on storage systems} - G06F 3/0641: {De-duplication techniques} - G06F 3/0652: {Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket} - G06F 3/067: {Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]} - G06F 3/0683: {Plurality of storage devices} - G06F 3/0689: {Disk arrays, e.g. RAID, JBOD} - G06F 11/1076: {Parity data used in redundant arrays of independent storages, e.g. in RAID systems} - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract In general, the invention relates to a method for storing data. The method includes obtaining data from a host, making a first determination that a data cluster comprises a plurality of non-volatile memory devices, based on the first determination: storing processed data corresponding to the data in at least one of the plurality of non-volatile memory devices, and making a second determination to de-stage at least a portion of the processed data to a persistent storage device, and based on the second determination, initiating a delayed compression operation on the processed data. ## Claims ### Claim 1 A method for storing data, the method comprising: obtaining host data from a host; making a first determination that a data cluster comprises a plurality of non-volatile memory devices; based on the first determination: storing processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices, wherein the processed data is generated based on a protection policy specifying requirements for generating and storing the processed data associated with the host data; and making a second determination to de-stage at least a portion of the processed data to a persistent storage device; and based on the second determination, initiating a delayed compression operation on the processed data. ### Claim 2 (depends on 1) The method of claim 1, wherein the delayed compression operation comprises: compressing at least a portion of the processed data to obtain compressed data; and initiating transmission of the compressed data to the persistent storage device. ### Claim 3 (depends on 1) The method of claim 1, wherein storing the processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices comprising: performing an erasure coding operation on at least a portion of the host data to generate processed data; and initiating transmission of the processed data to the at least one of the plurality of non-volatile memory devices. ### Claim 4 (depends on 3) The method of claim 3, wherein performing the erasure coding operation comprises generating at least one parity value using at least a portion of the host data. ### Claim 5 (depends on 1) The method of claim 1, wherein storing the processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices comprising: performing a replication operation on at least a portion of the host data to generated processed data; and initiating transmission of the processed data to the at least one of the plurality of non-volatile memory devices. ### Claim 6 (depends on 1) The method of claim 1, wherein the data cluster comprises at least one node, wherein the at least one of the plurality of non-volatile memory devices and the persistent storage device are located on the at least one node. ### Claim 7 (depends on 1) The method of claim 1, wherein making the second determination to de-stage at least a portion of the processed data to the persistent storage device comprises: making a third determination that a storage threshold for the at least one of the plurality of non-volatile memory devices has been exceeded. ### Claim 8 A system, comprising: a processor; a data processor, which when executed by the processor performs a method, the method comprising: obtaining host data from a host; making a first determination that a data cluster comprises a plurality of non-volatile memory devices; based on the first determination: storing processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices, wherein the processed data is generated based on a protection policy specifying requirements for generating and storing the processed data associated with the host data; and making a second determination to de-stage at least a portion of the processed data to a persistent storage device; and based on the second determination, initiating a delayed compression operation on the processed data. ### Claim 9 (depends on 8) The system of claim 8, wherein the delayed compression operation comprises: compressing at least a portion of the processed data to obtain compressed data; and initiating transmission of the compressed data to the persistent storage device. ### Claim 10 (depends on 8) The system of claim 8, wherein storing the processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices comprising: performing an erasure coding operation on at least a portion of the host data to generate processed data; and initiating transmission of the processed data to the at least one of the plurality of non-volatile memory devices. ### Claim 11 (depends on 10) The system of claim 10, wherein performing the erasure coding operation comprises generating at least one parity value using at least a portion of the host data. ### Claim 12 (depends on 8) The system of claim 8, wherein storing the processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices comprising: performing a replication operation on at least a portion of the host data to generated processed data; and initiating transmission of the processed data to the at least one of the plurality of non-volatile memory devices. ### Claim 13 (depends on 8) The system of claim 8, wherein the data cluster comprises at least one node, wherein the at least one of the plurality of non-volatile memory devices and the persistent storage device are located on the at least one node. ### Claim 14 (depends on 8) The system of claim 8, wherein making the second determination to de-stage at least a portion of the processed data to the persistent storage device comprises: making a third determination that a storage threshold for the at least one of the plurality of non-volatile memory devices has been exceeded. ### Claim 15 A non-transitory computer readable medium comprising computer readable program code, which when executed by a computer processor enables the computer processor to perform a method, the method comprising: obtaining host data from a host; making a first determination that a data cluster comprises a plurality of non-volatile memory devices; based on the first determination: storing processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices, wherein the processed data is generated based on a protection policy specifying requirements for generating and storing the processed data associated with the host data; and making a second determination to de-stage at least a portion of the processed data to a persistent storage device; and based on the second determination, initiating a delayed compression operation on the processed data. ### Claim 16 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the delayed compression operation comprises: compressing at least a portion of the processed data to obtain compressed data; and initiating transmission of the compressed data to the persistent storage device. ### Claim 17 (depends on 15) The non-transitory computer readable medium of claim 15, wherein storing the processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices comprising: performing an erasure coding operation on at least a portion of the host data to generate processed data; and initiating transmission of the processed data to the at least one of the plurality of non-volatile memory devices. ### Claim 18 (depends on 17) The non-transitory computer readable medium of claim 17, wherein performing the erasure coding operation comprises generating at least one parity value using at least a portion of the host data. ### Claim 19 (depends on 15) The non-transitory computer readable medium of claim 15, wherein storing the processed data corresponding to the host data in at least one of the plurality of non-volatile memory devices comprising: performing a replication operation on at least a portion of the host data to generated processed data; and initiating transmission of the processed data to the at least one of the plurality of non-volatile memory devices. ### Claim 20 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the data cluster comprises at least one node, wherein the at least one of the plurality of non-volatile memory devices and the persistent storage device are located on the at least one node.