JPS57168360A - Magnetic recording controlling system - Google Patents

Magnetic recording controlling system

Info

Publication number
JPS57168360A
JPS57168360A JP56047415A JP4741581A JPS57168360A JP S57168360 A JPS57168360 A JP S57168360A JP 56047415 A JP56047415 A JP 56047415A JP 4741581 A JP4741581 A JP 4741581A JP S57168360 A JPS57168360 A JP S57168360A
Authority
JP
Japan
Prior art keywords
data
devices
magnetic disk
storage device
main storage
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
JP56047415A
Other languages
Japanese (ja)
Other versions
JPH0254584B2 (en
Inventor
Satoru Kaneko
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 JP56047415A priority Critical patent/JPS57168360A/en
Publication of JPS57168360A publication Critical patent/JPS57168360A/en
Publication of JPH0254584B2 publication Critical patent/JPH0254584B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0866—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches for peripheral storage systems, e.g. disk cache

Abstract

PURPOSE:To exactly hold the latest data even in the event of a fault such as service interruption, etc., by providing write data to both a magnetic disk recording device and a buffer memory, and updating the data. CONSTITUTION:A magnetic disk controller 1 is provided between a main storage device and magnetic disk devices 5, 6. In this state, as to data in the devices 5, 6, which are updated when the data are transferred to the devices 5, 6 from the main storage device, a hit deciding part 20 detects whether the same contents as said data exist in a cash memory 30 or not. Subsequently, a transfer controlling part provided in the controller 1 transfers write data DATA provided from a data transfer part 13 to both the cash memory 30 and the devices 5, 6 simultaneously, and updates the data.
JP56047415A 1981-03-31 1981-03-31 Magnetic recording controlling system Granted JPS57168360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56047415A JPS57168360A (en) 1981-03-31 1981-03-31 Magnetic recording controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56047415A JPS57168360A (en) 1981-03-31 1981-03-31 Magnetic recording controlling system

Publications (2)

Publication Number Publication Date
JPS57168360A true JPS57168360A (en) 1982-10-16
JPH0254584B2 JPH0254584B2 (en) 1990-11-22

Family

ID=12774507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56047415A Granted JPS57168360A (en) 1981-03-31 1981-03-31 Magnetic recording controlling system

Country Status (1)

Country Link
JP (1) JPS57168360A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04256143A (en) * 1990-08-31 1992-09-10 Internatl Business Mach Corp <Ibm> Peripheral subsystem and control method
JPH0764870A (en) * 1993-08-23 1995-03-10 Internatl Business Mach Corp <Ibm> Method for storage of data block of digital information and disk storage apparatus for it

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5365025A (en) * 1976-11-24 1978-06-10 Nec Corp Memory store system
JPS5499534A (en) * 1978-01-23 1979-08-06 Nec Corp Magnetic disk device
JPS5534756A (en) * 1978-09-02 1980-03-11 Nec Corp Double recording system of magnetic disc device
JPS55123749A (en) * 1979-03-16 1980-09-24 Nec Corp Double recording system of magnetic disc
JPS55154650A (en) * 1979-05-22 1980-12-02 Nec Corp Disc cash control system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5365025A (en) * 1976-11-24 1978-06-10 Nec Corp Memory store system
JPS5499534A (en) * 1978-01-23 1979-08-06 Nec Corp Magnetic disk device
JPS5534756A (en) * 1978-09-02 1980-03-11 Nec Corp Double recording system of magnetic disc device
JPS55123749A (en) * 1979-03-16 1980-09-24 Nec Corp Double recording system of magnetic disc
JPS55154650A (en) * 1979-05-22 1980-12-02 Nec Corp Disc cash control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04256143A (en) * 1990-08-31 1992-09-10 Internatl Business Mach Corp <Ibm> Peripheral subsystem and control method
JPH0764870A (en) * 1993-08-23 1995-03-10 Internatl Business Mach Corp <Ibm> Method for storage of data block of digital information and disk storage apparatus for it

Also Published As

Publication number Publication date
JPH0254584B2 (en) 1990-11-22

Similar Documents

Publication Publication Date Title
WO2001004754A3 (en) Remote data copy using a prospective suspend command
KR960702127A (en) REMOTE DATA MIRRORING
JPS6419438A (en) Hot stand-by memory copy system
JP2003248605A5 (en)
WO1995006284B1 (en) Ata interface architecture employing state machines
MY125125A (en) Method and system for ordering priority commands on a commodity disk drive
JPS57168360A (en) Magnetic recording controlling system
AU2231888A (en) Access priority control system for main storage for computer
CA2037578A1 (en) Copying method of system data and copying adaptor
JPS6448166A (en) Cache memory control system for parallel computers
JPS58201158A (en) Data storage processing system
JPH0232652B2 (en)
JPS6286426A (en) Data base backup system
JPS6428755A (en) Data block updating system
JPS57103530A (en) Channel controlling system
JPS5696346A (en) Supervisory and control system of multisystem
JPS6473458A (en) System for controlling access of vector data
JPS5776624A (en) Input and output control adapter
JPS6475301A (en) Article data managing system for automatic warehouse
JPS6413648A (en) Bus system
JPS643706A (en) Controller
JPS6481566A (en) Charging information transfer system
JPS6437654A (en) Inter-processor communication memory
JPS647143A (en) Write back system for cache system
JPS6458045A (en) Data transfer system