JPS55123749A - Double recording system of magnetic disc - Google Patents

Double recording system of magnetic disc

Info

Publication number
JPS55123749A
JPS55123749A JP2996079A JP2996079A JPS55123749A JP S55123749 A JPS55123749 A JP S55123749A JP 2996079 A JP2996079 A JP 2996079A JP 2996079 A JP2996079 A JP 2996079A JP S55123749 A JPS55123749 A JP S55123749A
Authority
JP
Japan
Prior art keywords
data
magnetic disc
buffer
recorded
written
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
JP2996079A
Other languages
Japanese (ja)
Inventor
Takehisa Tokunaga
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
Original Assignee
NEC Corp
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, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2996079A priority Critical patent/JPS55123749A/en
Publication of JPS55123749A publication Critical patent/JPS55123749A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE: To perform reliable recording by storing data, which is written to one magnetic disc device, into the other magnetic disc device simultaneously.
CONSTITUTION: In the system where the same data is recorded on different magnetic disc devices duplicatively, data buffer 400 records write data, and data read/write of buffer 400 is controlled by a data buffer control circuit. Here, data to be written to one magnetic disc device, for example, 1 is recorded on buffer 400 simultaneously with the write of this data to device 1, and contents of buffer 400 are written to the other device 2 also. As a result, the same data is recorded on two devices 1 and 2, so that data can be recorded to perform reliable recording even if one magnetic disc device is faulty.
COPYRIGHT: (C)1980,JPO&Japio
JP2996079A 1979-03-16 1979-03-16 Double recording system of magnetic disc Pending JPS55123749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2996079A JPS55123749A (en) 1979-03-16 1979-03-16 Double recording system of magnetic disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2996079A JPS55123749A (en) 1979-03-16 1979-03-16 Double recording system of magnetic disc

Publications (1)

Publication Number Publication Date
JPS55123749A true JPS55123749A (en) 1980-09-24

Family

ID=12290536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2996079A Pending JPS55123749A (en) 1979-03-16 1979-03-16 Double recording system of magnetic disc

Country Status (1)

Country Link
JP (1) JPS55123749A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168360A (en) * 1981-03-31 1982-10-16 Fujitsu Ltd Magnetic recording controlling system
JPS57185555A (en) * 1981-05-12 1982-11-15 Hitachi Ltd Magnetic disc controller
JPS57201950A (en) * 1981-06-05 1982-12-10 Hitachi Ltd Double recording magnetic disk system
US4423448A (en) * 1979-12-26 1983-12-27 Burroughs Corporation Multi-path to data facility for disk drive transducer arms
JPS6286425A (en) * 1985-10-11 1987-04-20 Nec Corp Magnetic disc control device
JPH02146075U (en) * 1989-05-15 1990-12-11

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4423448A (en) * 1979-12-26 1983-12-27 Burroughs Corporation Multi-path to data facility for disk drive transducer arms
JPS57168360A (en) * 1981-03-31 1982-10-16 Fujitsu Ltd Magnetic recording controlling system
JPS57185555A (en) * 1981-05-12 1982-11-15 Hitachi Ltd Magnetic disc controller
JPS57201950A (en) * 1981-06-05 1982-12-10 Hitachi Ltd Double recording magnetic disk system
JPS6286425A (en) * 1985-10-11 1987-04-20 Nec Corp Magnetic disc control device
JPH02146075U (en) * 1989-05-15 1990-12-11

Similar Documents

Publication Publication Date Title
JPS52123606A (en) Recorder/reproducer
JPS55123749A (en) Double recording system of magnetic disc
JPS5790770A (en) Data backup system
JPS5757359A (en) Magnetic disk device
JPS5534756A (en) Double recording system of magnetic disc device
JPS53133415A (en) Magnetic recording device
JPS6414776A (en) Method for processing defective sector in optical data recording/reproducing device
JPS55163697A (en) Memory device
JPS5339025A (en) Writing control system for magnetic disc pack, etc.
JPS5693156A (en) Floppy disk magazine driving device
JPS5499534A (en) Magnetic disk device
JPS5430742A (en) Memory control system
JPS53106110A (en) Magnetic memory controller
JPS53118915A (en) Storage reproducing system
JPS54161852A (en) Mass memory device with high-speed memory part
JPS53141516A (en) Storing system
JPS5374849A (en) Checking method for writing data
JPS53141518A (en) Storing system
JPS5589911A (en) Recording system of digital magnetic tape
JPS642155A (en) Write controlling method for external memory device
JPS5250131A (en) Information recording system
JPS5698709A (en) Magnetic disk device
JPS57131166A (en) Partial read and record control device
JPS5430746A (en) High-speed access control system to rotary memory unit
JPS52131709A (en) Write/read control system for magnetic disk device