{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9606734","patent":{"patent_number":"US-9606734","title":"Two-level hierarchical log structured array architecture using coordinated garbage collection for flash arrays","assignee":null,"inventors":[],"filing_date":"2014-12-22T00:00:00.000Z","publication_date":"2017-03-28T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":20,"abstract":"A mechanism is provided in an array controller of a two-level hierarchical log structured array architecture for a non-volatile memory array for coordinated garbage collection. The two-level hierarchical log structured array (LSA) architecture comprises an array-level LSA in the array controller and a node-level LSA in each node of the non-volatile memory array. The array controller maintains host logical block address (LBA) to node LBA mapping in an array controller connected to a plurality of nodes. A host data processing system issues access requests to host LBA. The mapping maps the host LBA space to a node LBA space of a plurality of nodes. The mechanism makes overprovisioned space in the node LBA space of the plurality of nodes available to the array-level LSA. The mechanism adds additional overprovisioned space at each node LBA space. The array controller initiates array-level garbage collection at the array-level LSA."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Two-level hierarchical log structured array architecture using coordinated garbage collection for flash arrays","description":"A mechanism is provided in an array controller of a two-level hierarchical log structured array architecture for a non-volatile memory array for coordinated garbage collection. The two-level hierarchi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9606734","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-9606734","citation_suggestion":"Patentable. \"Two-level hierarchical log structured array architecture using coordinated garbage collection for flash arrays\" (US-9606734). https://patentable.app/patents/US-9606734","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9606734","json":"https://patentable.app/api/llm-context/US-9606734","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:19:31.763Z"}