CA2250560A1 - Recording device having short data writing time - Google Patents
Recording device having short data writing timeInfo
- 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
Links
- 230000005856 abnormality Effects 0.000 abstract 1
- 230000004044 response Effects 0.000 abstract 1
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Techniques For Improving Reliability Of Storages (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.
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) |
-
1992
- 1992-04-10 CA CA002250560A patent/CA2250560C/en not_active Expired - Fee Related
- 1992-04-10 CA CA002253327A patent/CA2253327C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2253327A1 (en) | 1992-10-12 |
| CA2250560C (en) | 2002-06-18 |
| CA2253327C (en) | 2001-06-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |