JPS5553751A - Backup system - Google Patents

Backup system

Info

Publication number
JPS5553751A
JPS5553751A JP12747678A JP12747678A JPS5553751A JP S5553751 A JPS5553751 A JP S5553751A JP 12747678 A JP12747678 A JP 12747678A JP 12747678 A JP12747678 A JP 12747678A JP S5553751 A JPS5553751 A JP S5553751A
Authority
JP
Japan
Prior art keywords
information
computer
receive
input
case
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.)
Pending
Application number
JP12747678A
Other languages
Japanese (ja)
Inventor
Masazumi Nakatsugawa
Koichiro Ozawa
Akira Oota
Masumi Miyagawa
Shigeru Hasegawa
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.)
NEC Corp
NEC Engineering Ltd
Original Assignee
NEC Corp
NEC Engineering Ltd
Nippon Electric Co Ltd
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 NEC Corp, NEC Engineering Ltd, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12747678A priority Critical patent/JPS5553751A/en
Publication of JPS5553751A publication Critical patent/JPS5553751A/en
Pending legal-status Critical Current

Links

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  • Hardware Redundancy (AREA)
  • Computer And Data Communications (AREA)

Abstract

PURPOSE: To secure the continuous property for the information by storing the information given from the communication control unit into the external auxiliary memory device when the electronic computer has some fault and then transferring the information when the faulty computer is recovered with addition of the information deciding whether the information is of past or present.
CONSTITUTION: The information transferred from comminication control unit 1 is supplied to backup device 2, and device 2 has a busy check whether electronic computer 4 can receive the input of the information. In case computer 4 can receive the input of the information, device 2 has a check whether external memory device 3 has the information stored previously and then transfers the information to computer 4 with addition of the information deciding whether the information is that read out of device 3. While in case computer 4 is impossible to receive the input of the information, the information given from unit 1 is stored in device 3. In this case, the marking is added so that the information can be extracted exactly later. Thus the continuous property can be ensured for the information even with the simplex system.
COPYRIGHT: (C)1980,JPO&Japio
JP12747678A 1978-10-17 1978-10-17 Backup system Pending JPS5553751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12747678A JPS5553751A (en) 1978-10-17 1978-10-17 Backup system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12747678A JPS5553751A (en) 1978-10-17 1978-10-17 Backup system

Publications (1)

Publication Number Publication Date
JPS5553751A true JPS5553751A (en) 1980-04-19

Family

ID=14960868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12747678A Pending JPS5553751A (en) 1978-10-17 1978-10-17 Backup system

Country Status (1)

Country Link
JP (1) JPS5553751A (en)

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