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Method and means for managing DASD array accesses when operating in degraded mode 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06F-011/00
출원번호 US-0562188 (1990-08-03)
발명자 / 주소
  • Mattson Richard L. (San Jose CA) Ng Spencer (San Jose CA)
출원인 / 주소
  • International Business Machines Corporation (Armonk NY 02)
인용정보 피인용 횟수 : 103  인용 특허 : 0

초록 ▼

A method and apparatus are disclosed which minimize the additional read and write loading for each remaining DASD in a DASD array occasioned by a single point of failure where subsets of DASDs may accessed asynchronously (RAID 4 or RAID 5). In this method, parity groups are written across the array

대표청구항 ▼

In a storage subsystem having C controllers each attaching a counterpart string of S direct access storage devices (DASD\s) in a C*S array, and means for accessing the C*S array and for attaching said array to a computing system, a plurality of N parity groups of data blocks being defined onto the D

이 특허를 인용한 특허 (103)

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