GB2004673A - Computer system - Google Patents

Computer system

Info

Publication number
GB2004673A
GB2004673A GB7836732A GB7836732A GB2004673A GB 2004673 A GB2004673 A GB 2004673A GB 7836732 A GB7836732 A GB 7836732A GB 7836732 A GB7836732 A GB 7836732A GB 2004673 A GB2004673 A GB 2004673A
Authority
GB
United Kingdom
Prior art keywords
computer
safeguarding
store
stored
modules
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.)
Granted
Application number
GB7836732A
Other versions
GB2004673B (en
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB2004673A publication Critical patent/GB2004673A/en
Application granted granted Critical
Publication of GB2004673B publication Critical patent/GB2004673B/en
Expired 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
    • G06F11/202—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 processing functionality is redundant
    • G06F11/2038—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 processing functionality is redundant with a single idle spare processing component
    • 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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1415—Saving, restoring, recovering or retrying at system level
    • G06F11/142—Reconfiguring to eliminate the error
    • 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
    • G06F11/07—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
    • G06F11/202—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 processing functionality is redundant
    • G06F11/2041—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 processing functionality is redundant with more than one idle spare processing component
    • 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
    • G06F11/202—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 processing functionality is redundant
    • G06F11/2023—Failover techniques
    • G06F11/2025—Failover techniques using centralised failover control functionality

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Hardware Redundancy (AREA)
  • Multi Processors (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

A computer system has two or more computer modules (11 to 15) co- ordinated by a control computer (STR) via a system bus (1) and each comprising an individual computer and local storage (ER, KS), and a safeguarding store (SS) in which during periodic monitoring phases, the intermediate results of the modules are stored. When a fault situation is recognised during a monitoring phase, a defective module can be replaced and, since a set of (correct) intermediate results is stored in the safeguarding store the system can then use these results to return to the corresponding point in execution and resume processing from that point without undue delay. The arrangement is used in real time applications such as process control and monitoring equipment where high reliability and minimum time loss in the event of a fault are required. <IMAGE>
GB7836732A 1977-09-14 1978-09-13 Computer system Expired GB2004673B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772741379 DE2741379A1 (en) 1977-09-14 1977-09-14 COMPUTER SYSTEM

Publications (2)

Publication Number Publication Date
GB2004673A true GB2004673A (en) 1979-04-04
GB2004673B GB2004673B (en) 1982-02-03

Family

ID=6018946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836732A Expired GB2004673B (en) 1977-09-14 1978-09-13 Computer system

Country Status (8)

Country Link
JP (1) JPS5451439A (en)
BE (1) BE870484A (en)
CA (1) CA1143026A (en)
DE (1) DE2741379A1 (en)
FR (1) FR2403598B1 (en)
GB (1) GB2004673B (en)
IT (1) IT1098538B (en)
NL (1) NL7809313A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2217487B (en) * 1988-04-13 1992-09-23 Yokogawa Electric Corp Dual computer system
GB2369538A (en) * 2000-11-24 2002-05-29 Ibm Recovery following process or system failure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412281A (en) * 1980-07-11 1983-10-25 Raytheon Company Distributed signal processing system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1243464A (en) * 1969-01-17 1971-08-18 Plessey Telecomm Res Ltd Stored-programme controlled data-processing systems
JPS5627905B1 (en) * 1970-11-06 1981-06-27
JPS5633915B1 (en) * 1970-11-06 1981-08-06
BE789828A (en) * 1972-10-09 1973-04-09 Bell Telephone Mfg DATA PROCESSING OPERATING SYSTEM.
CA1053352A (en) * 1974-11-12 1979-04-24 Scott A. Inrig Method for providing a substitute memory module in a data processing system
DE2546202A1 (en) * 1975-10-15 1977-04-28 Siemens Ag COMPUTER SYSTEM OF SEVERAL INTERCONNECTED AND INTERACTING INDIVIDUAL COMPUTERS AND PROCEDURES FOR OPERATING THE COMPUTER SYSTEM

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2217487B (en) * 1988-04-13 1992-09-23 Yokogawa Electric Corp Dual computer system
GB2369538A (en) * 2000-11-24 2002-05-29 Ibm Recovery following process or system failure
GB2369538B (en) * 2000-11-24 2004-06-30 Ibm Recovery following process or system failure
US6934247B2 (en) 2000-11-24 2005-08-23 International Business Machines Corporation Recovery following process or system failure

Also Published As

Publication number Publication date
JPS618988B2 (en) 1986-03-19
BE870484A (en) 1979-01-02
NL7809313A (en) 1979-03-16
CA1143026A (en) 1983-03-15
JPS5451439A (en) 1979-04-23
GB2004673B (en) 1982-02-03
DE2741379A1 (en) 1979-03-15
FR2403598A1 (en) 1979-04-13
IT1098538B (en) 1985-09-07
FR2403598B1 (en) 1985-08-30
IT7827595A0 (en) 1978-09-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee