DE69523124D1 - Fehlererkennungssystem für einen gespiegelten Speicher in einer duplizierten Steuerung eines Plattenspeicherungssystems - Google Patents

Fehlererkennungssystem für einen gespiegelten Speicher in einer duplizierten Steuerung eines Plattenspeicherungssystems

Info

Publication number
DE69523124D1
DE69523124D1 DE69523124T DE69523124T DE69523124D1 DE 69523124 D1 DE69523124 D1 DE 69523124D1 DE 69523124 T DE69523124 T DE 69523124T DE 69523124 T DE69523124 T DE 69523124T DE 69523124 D1 DE69523124 D1 DE 69523124D1
Authority
DE
Germany
Prior art keywords
disk storage
fault detection
mirrored memory
storage system
detection system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69523124T
Other languages
English (en)
Other versions
DE69523124T2 (de
Inventor
Mark D Petersen
Barry J Oldfield
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE69523124D1 publication Critical patent/DE69523124D1/de
Application granted granted Critical
Publication of DE69523124T2 publication Critical patent/DE69523124T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2097—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements maintaining the standby controller/processing unit updated
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1612—Error detection by comparing the output signals of redundant hardware where the redundant component is persistent storage
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1633—Error detection by comparing the output of redundant processing systems using mutual exchange of the output between the redundant processing components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2089—Redundant storage control functionality
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/70—Masking faults in memories by using spares or by reconfiguring
    • G11C29/74—Masking faults in memories by using spares or by reconfiguring using duplex memories, i.e. using dual copies
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1666—Error detection or correction of the data by redundancy in hardware where the redundant component is memory or memory area
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/28—Error detection; Error correction; Monitoring by checking the correct order of processing
DE69523124T 1994-12-15 1995-07-11 Fehlererkennungssystem für einen gespiegelten Speicher in einer duplizierten Steuerung eines Plattenspeicherungssystems Expired - Lifetime DE69523124T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35761794A 1994-12-15 1994-12-15

Publications (2)

Publication Number Publication Date
DE69523124D1 true DE69523124D1 (de) 2001-11-15
DE69523124T2 DE69523124T2 (de) 2002-05-29

Family

ID=23406356

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69523124T Expired - Lifetime DE69523124T2 (de) 1994-12-15 1995-07-11 Fehlererkennungssystem für einen gespiegelten Speicher in einer duplizierten Steuerung eines Plattenspeicherungssystems

Country Status (4)

Country Link
US (1) US5699510A (de)
EP (1) EP0717358B1 (de)
JP (1) JP3655683B2 (de)
DE (1) DE69523124T2 (de)

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CN110535714B (zh) * 2018-05-25 2023-04-18 华为技术有限公司 一种仲裁方法及相关装置
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Also Published As

Publication number Publication date
JP3655683B2 (ja) 2005-06-02
EP0717358A1 (de) 1996-06-19
US5699510A (en) 1997-12-16
EP0717358B1 (de) 2001-10-10
JPH08249130A (ja) 1996-09-27
DE69523124T2 (de) 2002-05-29

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Legal Events

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8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE