{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521978","patent":{"patent_number":"US-8521978","title":"Storage apparatus and method for controlling storage apparatus","assignee":null,"inventors":[],"filing_date":"2010-04-27T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":15,"abstract":"A storage apparatus 10 implements Thin Provisioning functions by allocating a storage area of a physical drive 171 to a logical page in units of a physical page, the physical drive 171 being managed as a storage pool 93, the logical page being a management unit of a storage area of a virtual volume 52; performs tier arrangement processing to replicate data stored in a migration source physical page to a migration destination physical page; and performs replacement processing for the physical drive 171 upon receipt of a request to replace the physical drive 171 in units of a physical device (PDEV). In performing the replacement processing for the physical drive 171, when a first processing mode is designated as tier arrangement processing mode, the storage apparatus 10 cancels start of the tier arrangement processing, and then starts the replacement processing."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Storage apparatus and method for controlling storage apparatus","description":"A storage apparatus 10 implements Thin Provisioning functions by allocating a storage area of a physical drive 171 to a logical page in units of a physical page, the physical drive 171 being managed a","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521978","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-8521978","citation_suggestion":"Patentable. \"Storage apparatus and method for controlling storage apparatus\" (US-8521978). https://patentable.app/patents/US-8521978","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521978","json":"https://patentable.app/api/llm-context/US-8521978","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:14:00.249Z"}