CA2250560A1 - Recording device having short data writing time - Google Patents

Recording device having short data writing time

Info

Publication number
CA2250560A1
CA2250560A1 CA002250560A CA2250560A CA2250560A1 CA 2250560 A1 CA2250560 A1 CA 2250560A1 CA 002250560 A CA002250560 A CA 002250560A CA 2250560 A CA2250560 A CA 2250560A CA 2250560 A1 CA2250560 A1 CA 2250560A1
Authority
CA
Canada
Prior art keywords
writing
data
completion
redundancy
redundancy data
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
CA002250560A
Other languages
French (fr)
Other versions
CA2250560C (en
Inventor
Hiroshi Baba
Toshio Matsumoto
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
Individual
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 JP3078904A external-priority patent/JP2743606B2/en
Application filed by Individual filed Critical Individual
Publication of CA2250560A1 publication Critical patent/CA2250560A1/en
Application granted granted Critical
Publication of CA2250560C publication Critical patent/CA2250560C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

A recording device which improves a response time to write data by reporting to a host computer the completion of writing operation prior to the completion of writing redundancy data. Data writing command information from the host computer is stored in a command/status memory backed up by a power source in an array controller, and the completion of writing operation is reported to the host computer at the time of the completion of writing updated data prior to the completion of writing redundancy data. Redundancy data is written as a background process. If redundancy data could not be written due to any abnormality of the power source or the like, such redundancy data may be generated from the data in other disk units of the same redundancy group in accordance with writing command information stored in the command/status memory, thereby completing the writing of redundancy data.
CA002250560A 1991-04-11 1992-04-10 Recording device having short data writing time Expired - Fee Related CA2250560C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP78904/1991 1991-04-11
JP3078904A JP2743606B2 (en) 1991-04-11 1991-04-11 Array type recording device
CA002065832A CA2065832C (en) 1991-04-11 1992-04-10 Recording device having short data writing time

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002065832A Division CA2065832C (en) 1991-04-11 1992-04-10 Recording device having short data writing time

Publications (2)

Publication Number Publication Date
CA2250560A1 true CA2250560A1 (en) 1992-10-12
CA2250560C CA2250560C (en) 2002-06-18

Family

ID=25675081

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002250560A Expired - Fee Related CA2250560C (en) 1991-04-11 1992-04-10 Recording device having short data writing time
CA002253327A Expired - Fee Related CA2253327C (en) 1991-04-11 1992-04-10 Recording device having short data writing time

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002253327A Expired - Fee Related CA2253327C (en) 1991-04-11 1992-04-10 Recording device having short data writing time

Country Status (1)

Country Link
CA (2) CA2250560C (en)

Also Published As

Publication number Publication date
CA2250560C (en) 2002-06-18
CA2253327A1 (en) 1992-10-12
CA2253327C (en) 2001-06-19

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed