{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9665291","patent":{"patent_number":"US-9665291","title":"Migration of hot and cold data between high-performance storage and low-performance storage at block and sub-block granularities","assignee":null,"inventors":[],"filing_date":"2014-02-26T00:00:00.000Z","publication_date":"2017-05-30T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":8,"abstract":"A method and an apparatus for tiered storage processing of data, and a storage device. The method includes: splitting the migration unit into multiple migration subunits when a migration unit of low-tier disks is migrated to high-tier disks, and detecting a data access frequency of each migration subunit respectively; migrating the migration subunit to the low-tier disk when detecting that the data access frequency of the migration subunit is lower than a set threshold; and combining the multiple migration subunits into the migration unit when detecting that the multiple migration subunits are all migrated to the lower-tier disk. The present invention improves usage of storage media, and controls metadata storage resource consumption effectively."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Migration of hot and cold data between high-performance storage and low-performance storage at block and sub-block granularities","description":"A method and an apparatus for tiered storage processing of data, and a storage device. The method includes: splitting the migration unit into multiple migration subunits when a migration unit of low-t","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9665291","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9665291","citation_suggestion":"Patentable. \"Migration of hot and cold data between high-performance storage and low-performance storage at block and sub-block granularities\" (US-9665291). https://patentable.app/patents/US-9665291","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9665291","json":"https://patentable.app/api/llm-context/US-9665291","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:56:18.145Z"}