{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11474901","patent":{"patent_number":"US-11474901","title":"Reliable RAID system with embedded spare capacity and flexible growth","assignee":null,"inventors":[],"filing_date":"2020-09-02T00:00:00.000Z","publication_date":"2022-10-18T00:00:00.000Z","cpc_codes":["G06F","G06F","G06F","G06F","G06F","G06F"],"num_claims":20,"abstract":"A subset of drives with protection groups that have D data members and P parity members is created with (D+P+1) drives each having (D+P) partitions. One of the protection groups is used for spare capacity. (D+P) sequentially numbered protection groups are created by distributing protection group members such that members of protection group (X+Y) modulo (D+P+1) are located on the partition at drive X of partition Y. Alternatively, members of protection group (X−Y) modulo (D+P+1) are located on the partition at drive X of partition Y. New drives are added in single drive increments. When a new drive is added the first (D+P) protection group members of the lowest numbered unrotated partition of the (D+P) lowest numbered drives are rotated onto the new drive. Members are rotated in ascending order by drive to locations in ascending order by partition. A new protection group is created in the partitions made available due to rotation. When there are enough drives in the drive subset to enable a split, then the drive subset is split into two drive subsets, e.g. a first drive subset of (D+P) drives and a second drive subset of (D+P+1) drives."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Reliable RAID system with embedded spare capacity and flexible growth","description":"A subset of drives with protection groups that have D data members and P parity members is created with (D+P+1) drives each having (D+P) partitions. One of the protection groups is used for spare capa","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11474901","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-11474901","citation_suggestion":"Patentable. \"Reliable RAID system with embedded spare capacity and flexible growth\" (US-11474901). https://patentable.app/patents/US-11474901","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11474901","json":"https://patentable.app/api/llm-context/US-11474901","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T16:24:27.007Z"}