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JPS56156996A - Diagnosis system of storage device - Google Patents

Diagnosis system of storage device

Info

Publication number
JPS56156996A
JPS56156996A JP5770180A JP5770180A JPS56156996A JP S56156996 A JPS56156996 A JP S56156996A JP 5770180 A JP5770180 A JP 5770180A JP 5770180 A JP5770180 A JP 5770180A JP S56156996 A JPS56156996 A JP S56156996A
Authority
JP
Japan
Prior art keywords
error
patterns
bit error
circuit
diagnosis
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
JP5770180A
Other languages
Japanese (ja)
Other versions
JPS6037934B2 (en
Inventor
Shigemi Uemoto
Nobuyoshi Tate
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55057701A priority Critical patent/JPS6037934B2/en
Publication of JPS56156996A publication Critical patent/JPS56156996A/en
Publication of JPS6037934B2 publication Critical patent/JPS6037934B2/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
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
    • 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
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Detection And Correction Of Errors (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To perform diagnosis of error correction code check circuits or the like according to normal, 1 bit error and 2 bit error patterns by performing diagnosis for various patterns by a storage control part and an error detecting control part. CONSTITUTION:A storage control part 5 generates the control signals of 00, 10, 01 of 2 bits according to the normal pattern, 1 bit error pattern and 2 bit error pattern set in a storage part 1. The patterns having been set in the part 1 are applied via an output resistor 3 to an error correction code check circuit 4. The diagnosis output of the circuit 4 is detected with an error detection control part 6, and in the event of abnormality of the circuit 4, the output of the OR circuit 7-3 of an error detection output part 7 inverts to ''1'', whereby abnormality reporting is accomplished. Hence, the diagnosis of the error correction code check circuit is accomplished surely not only for normal patterns but for 1-bit error, 2-bit error patterns as well.
JP55057701A 1980-04-30 1980-04-30 Storage device diagnostic method Expired JPS6037934B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55057701A JPS6037934B2 (en) 1980-04-30 1980-04-30 Storage device diagnostic method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55057701A JPS6037934B2 (en) 1980-04-30 1980-04-30 Storage device diagnostic method

Publications (2)

Publication Number Publication Date
JPS56156996A true JPS56156996A (en) 1981-12-03
JPS6037934B2 JPS6037934B2 (en) 1985-08-29

Family

ID=13063232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55057701A Expired JPS6037934B2 (en) 1980-04-30 1980-04-30 Storage device diagnostic method

Country Status (1)

Country Link
JP (1) JPS6037934B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6070600A (en) * 1983-09-28 1985-04-22 Nippon Signal Co Ltd:The Microcomputer system
JPS62226353A (en) * 1986-03-28 1987-10-05 Mitsubishi Electric Corp Storage device with ras circuit
JPS62226354A (en) * 1986-03-28 1987-10-05 Mitsubishi Electric Corp Storage device with ras circuit
US4794597A (en) * 1986-03-28 1988-12-27 Mitsubishi Denki Kabushiki Kaisha Memory device equipped with a RAS circuit
JP2020021313A (en) * 2018-08-01 2020-02-06 富士通株式会社 Data processing device and diagnostic method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6070600A (en) * 1983-09-28 1985-04-22 Nippon Signal Co Ltd:The Microcomputer system
JPS62226353A (en) * 1986-03-28 1987-10-05 Mitsubishi Electric Corp Storage device with ras circuit
JPS62226354A (en) * 1986-03-28 1987-10-05 Mitsubishi Electric Corp Storage device with ras circuit
US4794597A (en) * 1986-03-28 1988-12-27 Mitsubishi Denki Kabushiki Kaisha Memory device equipped with a RAS circuit
JP2020021313A (en) * 2018-08-01 2020-02-06 富士通株式会社 Data processing device and diagnostic method

Also Published As

Publication number Publication date
JPS6037934B2 (en) 1985-08-29

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