GB2303733B - Recording apparatus - Google Patents

Recording apparatus

Info

Publication number
GB2303733B
GB2303733B GB9621997A GB9621997A GB2303733B GB 2303733 B GB2303733 B GB 2303733B GB 9621997 A GB9621997 A GB 9621997A GB 9621997 A GB9621997 A GB 9621997A GB 2303733 B GB2303733 B GB 2303733B
Authority
GB
United Kingdom
Prior art keywords
data
group
write
recovery device
recording
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.)
Expired - Fee Related
Application number
GB9621997A
Other versions
GB9621997D0 (en
GB2303733A (en
Inventor
Masahiro Mizuno
Shiro Ogura
Kazuhiko Ito
Akira Ogawa
Toshio Matsumoto
Hiroshi Baba
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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
Priority claimed from JP5121502A external-priority patent/JPH06332623A/en
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB9621997D0 publication Critical patent/GB9621997D0/en
Publication of GB2303733A publication Critical patent/GB2303733A/en
Application granted granted Critical
Publication of GB2303733B publication Critical patent/GB2303733B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/70—Masking faults in memories by using spares or by reconfiguring
    • G11C29/74—Masking faults in memories by using spares or by reconfiguring using duplex memories, i.e. using dual copies
    • 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
    • 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
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/28—Speed controlling, regulating, or indicating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • 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
    • G06F11/1012—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 using codes or arrangements adapted for a specific type of error

Abstract

The recording apparatus comprises a plurality of rotary recording devices #0 - #P each of which has a write area with a plurality of blocks for storing data, wherein each individual recording device may be replaced with a recovery device #2 which stores recovered data of the replaced device. The array controller accesses data and redundant data recorded as a group in the blocks of the plurality of recording devices, and said array controller includes synchronization means for shifting the rotational phase of the recovery device from the rotational phase of the other devices by a predefined period t , and re-write means for reading a group of data from the write areas of the plurality of recording devices. Data is recovered during a time period corresponding to said predefined period t using the said group of data read from the write area; and the recovered data is stored into the recovery device.
GB9621997A 1993-05-24 1994-05-09 Recording apparatus Expired - Fee Related GB2303733B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5121502A JPH06332623A (en) 1993-05-24 1993-05-24 Array type recorder and recorder
GB9409176A GB2278487B (en) 1993-05-24 1994-05-09 Improved recording apparatus and method for an arrayed recording apparatus

Publications (3)

Publication Number Publication Date
GB9621997D0 GB9621997D0 (en) 1996-12-18
GB2303733A GB2303733A (en) 1997-02-26
GB2303733B true GB2303733B (en) 1997-06-18

Family

ID=26304847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9621997A Expired - Fee Related GB2303733B (en) 1993-05-24 1994-05-09 Recording apparatus

Country Status (1)

Country Link
GB (1) GB2303733B (en)

Also Published As

Publication number Publication date
GB9621997D0 (en) 1996-12-18
GB2303733A (en) 1997-02-26

Similar Documents

Publication Publication Date Title
DE69117550D1 (en) Data recovery method for a magnetic disk data storage device
EP0205965A3 (en) Peripheral subsystem having read/write cache with record access
EP0871120A3 (en) Method of storing data in a redundant group of disks and redundant array of disks
DE69226116D1 (en) Record carrier, readout device for reading the record carrier, and method and recording device for recording information on a record carrier
EP0335517A3 (en) Servo address system
DE69031494T2 (en) METHOD FOR READING AND WRITING FILES ON NON-ERASABLE STORAGE MEDIA
EP0496132A3 (en) Method of and apparatus for optically writing, reading and erasing a multi-plane record carrier, and record carrier suitable for said method and apparatus
DE3788660D1 (en) Method for reproducing a flexible optical information recording medium and holding device for reproducing the medium.
PL288706A1 (en) Memory unit for reversible storage of digital data on a multitrack storage medium, decoding device, information reading device for use on such storage medium and unified storage medium for use in such memory unit, decoding device and/or information reading device
DE69030894T2 (en) Storage medium, storage method and method for reading out the stored information
CA2080579A1 (en) Logical Track Write Scheduling System for a Parallel Disk Drive Array Data Storage Subsystem
BR9102061A (en) METHOD AND MEANS TO OBTAIN ACCESS TO DIRECT ACCESS STORAGE DISKS (DASDS) WITH SPEED AND CONCOMMITTANCE FOR TUNED DATA TRANSFER
DE69031411T2 (en) Method and arrangement for reading, writing and refreshing a memory with direct virtual or physical access
DE3871287D1 (en) DEVICE FOR DETECTING WHETHER INFORMATION IS RECORDED ON A STORAGE DEVICE.
EP0582414A3 (en) Multiple array memory device with staggered read/write for high speed data access.
ATA592279A (en) ARRANGEMENT FOR READING OUT CONTINUOUSALLY PARALLEL TRACKS ON INFORMATION STORAGE RECORDED ON A STORAGE MEDIUM
DE69317148T2 (en) Storage arrangement with redundant storage arrangement
ATE53263T1 (en) CONTROL UNIT FOR A MAGNETIC DISK MEMORY.
FR2603405B1 (en) APPARATUS FOR READING / WRITING DATA MEDIA CARDS
DE3853321T2 (en) Electronic device, suitable for storing secret data.
DE69025254D1 (en) Disk medium and disk storage device for reading information from the medium
GB2303733B (en) Recording apparatus
DE68918541D1 (en) Low energy consumption device and method for accessing a record carrier.
JPS62149034A (en) Information recording medium
DE68905099T2 (en) DATA ENCODING AND FORMING DEVICE FOR A RECORDING DEVICE WITH ROTATING HEADS.

Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 20000128

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020509