JP2000507014A - マルチホスト意志決定支援システム - Google Patents
マルチホスト意志決定支援システムInfo
- Publication number
- JP2000507014A JP2000507014A JP9533646A JP53364697A JP2000507014A JP 2000507014 A JP2000507014 A JP 2000507014A JP 9533646 A JP9533646 A JP 9533646A JP 53364697 A JP53364697 A JP 53364697A JP 2000507014 A JP2000507014 A JP 2000507014A
- Authority
- JP
- Japan
- Prior art keywords
- copy
- database
- support
- data storage
- storage system
- 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
Classifications
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
- G06F11/2082—Data synchronisation
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F11/14—Error detection or correction of the data by redundancy in operations
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
- G06F11/1466—Management of the backup or restore process to make the backup process non-disruptive
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
- G06F11/2066—Optimisation of the communication load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99951—File or database maintenance
- Y10S707/99952—Coherency, e.g. same view to multiple users
- Y10S707/99953—Recoverability
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99951—File or database maintenance
- Y10S707/99952—Coherency, e.g. same view to multiple users
- Y10S707/99955—Archiving or backup
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Multi Processors (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.複数のホストプロセッサが接続されると共にデータベースを記憶するデータ 記憶システムを含む環境において意志決定支援を実現する方法であって、 前記複数のホストプロセッサの内から選択されたひとつのホストプロセッサを 介し、前記データベースを同時進行的に更新する工程と、 前記複数のホストプロセッサの内の別のひとつのホストプロセッサを介し、意 志決定支援機能を実現する目的で前記データベースを読出す工程とを備え、 前記データベースの更新および読出しは、前記データベースに関するホスト間 ロックを課さずに、並行して生ずることを許容されている意志決定支援を実現す る方法。 2.データ記憶システムと、少なくともその幾つかが前記データ記憶システムに 接続された複数のホストプロセッサとを含み、前記データ記憶システムは作業用 データベースを記憶している環境において意志決定支援を実現する方法であって 、 前記複数のホストプロセッサの内から選択されたひとつのホストプロセッサを 介し、前記作業用データベースを同時進行的に更新する工程と、 前記作業用データベースが同時進行的に更新されている間に、前記作業用デー タベースのコピーを生成する工程と、 前記データベースの前記コピーを用いて前記データベースのサポートコピーを 生成する工程と、 前記複数のホストプロセッサの内の別のひとつのホストプロセッサを介し、意 志決定支援機能を実現する目的で前記サポートコピーを使用する工程とを備えて なる意志決定支援を実現する方法。 3.前記最初に言及されたコピーは、時点t0において取り出された前記作業用 データベースの内容のスナップショットである請求項2に記載の方法。 4.前記作業用データベースをミラーリングしてそのミラーコピーを生成し、該 ミラーコピーは前記最初に言及されたコピーである工程を更に備え、且つ、 前記サポートコピーを生成する工程は、 時点t0において前記作業用データベースから前記ミラーコピーを接続解除す る工程と、 接続解除された前記ミラーコピーから前記サポートコピーを生成する工程とか らなる請求項3に記載の方法。 5.前記サポートコピーを生成する工程は、 前記作業用データベースをシャットダウンする工程と、 前記作業用データベースが静止された後に、前記作業用データベースから前記 ミラーコピーを接続解除する工程とを更に備えてなる請求項4に記載の方法。 6.前記接続解除されたコピーから前記サポートコピーを生成する工程は、前記 接続解除されたコピーを整合性のあるものとする工程を備えてなる請求項4に記 載の方法。 7.前記サポートコピーを意志決定支援機能に使用した後、該サポートコピーを 前記作業用データベースに再接続する工程と、 前記サポートコピーを、それが再び前記作業用データベースのミラーコピーと なる如く前記作業用データベースと再同期する工程とを更に備えてなる請求項6 に記載の方法。 8.前記サポートコピーを意志決定支援機能に使用した後、意志決定支援機能の 為に該サポートコピーを使用した結果として該サポートコピーに生じた変更を後 退回復することにより修正サポートコピーを生成する工程と、 前記修正サポートコピーを前記作業用データベースに再接続する工と、 前記修正サポートコピーが再び前記作業用データベースのミラーコピーとなる 如く、該修正サポートコピーを前記作業用コピーと再同期する工程とを更に備え 得てなる、請求項6に記載の方法。 9.前記複数のホストプロセッサは第1ホストプロセッサおよび第2ホストプロ セッサを含み、 前記最初に言及されたデータ記憶システムは、データ通信リンクを介してリモ ート・データ記憶システムと接続されたローカル・データ記憶システムであり、 前記第1ホストプロセッサは前記ローカル・データ記憶システムに接続される と共に前記第2ホストプロセッサは前記リモート・データ記憶システムに接続さ れており、 当該方法は、 前記作業用データベースを前記リモート・データ記憶システムにミラーリング することにより、前記作業用データベースのミラーであるリモートデータベース を生成する工程を更に備えて成り、 該ミラーリング工程は前記データ通信リンクを介して実行され、 前記ローカルデータベースに為された変更が同時進行的に前記リモートデータ ベースに記録される如く、前記更新および前記ミラーリングは並行して生じ、 前記サポートコピーは前記リモートデータベースから導かれ、且つ、 前記第2ホストプロセッサは、意志決定支援機能を実現する目的で前記サポー トコピーを使用する請求項4に記載の方法。 10.前記リモートデータベースコピーを前記作業用データベースから接続解除 する工程と、 前記接続解除されたミラーコピーから前記サポートコピーを生成する工程とを更 に備えてなる請求項9に記載の方法。 11.前記サポートコピーを生成する工程は、 前記作業用データベースをシャットダウンする工程と、 前記作業用データベースが静止した後に前記ミラーコピーを前記作業用データ ベースから接続解除する工程とを更に備えてなる請求項10に記載の方法。 12.前記接続解除されたコピーから前記サポートコピーを生成する工程は接続 解除されたコピーを整合性のあるものとする工程を備えてなる請求項10に記載 の方法。 13.前記サポートコピーを意志決定支援機能に使用した後、該サポートコピー を作業用データベースに再接続する工程と、 前記サポートコピーを、それが再び前記作業用データベースのミラーコピーと なるような作業用データベースと再同期する工程とを更に備えてなる請求項11 に記載の方法。 14.前記サポートコピーを意志決定支援機能に使用した後、意志決定支援機能 の為に該サポートコピーを使用した結果として該サポートコピーに生じた変更を 後退回復することにより、修正サポートコピーを生成する工程と、 前記修正サポートコピーを前記作業用データベースに再接続する工程と、 前記修正サポートコピーが再び前記作業用データベースのミラーコピーとなる 如く、該修正サポートコピーを前記作業用コピーと再同期する工程とを更に備え 得てなる請求項13に記載の方法。 15.前記最初に言及されたコピーを生成する工程は、 時点t0において前記作業用データベースの並行コピーを開始してそのローカ ルコピーを生成し、該ローカルコピーは時点t0における前記作業用データベー ス内のデータ値を表す、工程から成り、 前記更新および前記並行コピーは同時に生じ、且つ、 前記サポートコピーは前記並行コピーから導かれる請求項3に記載の方法。 16.前記複数のホストプロセッサは第1ホストプロセッサおよび第2ホストプ ロセッサを含み、 前記最初に言及されたデータ記憶システムは、データ通信リンクを介してリモ ート・データ記憶システムと接続されたローカル・データ記憶システムであり、 前記第1ホストプロセッサは前記ローカル・データ記憶システムに接続される と共に前記第2ホストプロセッサは前記リモート・データ記憶システムに接続さ れており、 当該方法は、 時点t0において前記作業用データベースの並行コピーを開始してそのリモー トコピーを生成し、該リモートコピーは時点t0における前記作業用データベー ス内のデータ値を表す工程と、 前記更新および前記並行コピーは同時に生じ、 前記サポートコピーは前記リモートコピーから導かれ、且つ、 意志決定支援機能を実現する目的で、前記第2ホストプロセッサを介して前記 サポートコピーを読出す工程とを更に備えてなる請求項3に記載の方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/617,689 | 1996-03-19 | ||
| US08/617,689 US5852715A (en) | 1996-03-19 | 1996-03-19 | System for currently updating database by one host and reading the database by different host for the purpose of implementing decision support functions |
| PCT/US1997/004366 WO1997035269A1 (en) | 1996-03-19 | 1997-03-19 | Multi-host decision support system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000507014A true JP2000507014A (ja) | 2000-06-06 |
| JP3958795B2 JP3958795B2 (ja) | 2007-08-15 |
Family
ID=24474634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53364697A Expired - Lifetime JP3958795B2 (ja) | 1996-03-19 | 1997-03-19 | マルチホスト意志決定支援システム |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US5852715A (ja) |
| EP (1) | EP0954807A4 (ja) |
| JP (1) | JP3958795B2 (ja) |
| KR (1) | KR100674642B1 (ja) |
| AU (1) | AU2334197A (ja) |
| WO (1) | WO1997035269A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010049697A (ja) * | 2009-10-13 | 2010-03-04 | Hitachi Ltd | データ処理装置及びデータベース管理方法 |
| JP2011108258A (ja) * | 2003-08-14 | 2011-06-02 | Compellent Technologies | 仮想ディスク・ドライブのシステムおよび方法 |
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- 1997-03-19 JP JP53364697A patent/JP3958795B2/ja not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011108258A (ja) * | 2003-08-14 | 2011-06-02 | Compellent Technologies | 仮想ディスク・ドライブのシステムおよび方法 |
| US8321721B2 (en) | 2003-08-14 | 2012-11-27 | Compellent Technologies | Virtual disk drive system and method |
| US8473776B2 (en) | 2003-08-14 | 2013-06-25 | Compellent Technologies | Virtual disk drive system and method |
| US8555108B2 (en) | 2003-08-14 | 2013-10-08 | Compellent Technologies | Virtual disk drive system and method |
| US8560880B2 (en) | 2003-08-14 | 2013-10-15 | Compellent Technologies | Virtual disk drive system and method |
| US9021295B2 (en) | 2003-08-14 | 2015-04-28 | Compellent Technologies | Virtual disk drive system and method |
| US9047216B2 (en) | 2003-08-14 | 2015-06-02 | Compellent Technologies | Virtual disk drive system and method |
| US9436390B2 (en) | 2003-08-14 | 2016-09-06 | Dell International L.L.C. | Virtual disk drive system and method |
| US10067712B2 (en) | 2003-08-14 | 2018-09-04 | Dell International L.L.C. | Virtual disk drive system and method |
| JP2010049697A (ja) * | 2009-10-13 | 2010-03-04 | Hitachi Ltd | データ処理装置及びデータベース管理方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3958795B2 (ja) | 2007-08-15 |
| EP0954807A4 (en) | 2003-06-04 |
| US5852715A (en) | 1998-12-22 |
| EP0954807A1 (en) | 1999-11-10 |
| KR20000064698A (ko) | 2000-11-06 |
| WO1997035269A1 (en) | 1997-09-25 |
| AU2334197A (en) | 1997-10-10 |
| KR100674642B1 (ko) | 2007-06-04 |
| US6035412A (en) | 2000-03-07 |
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