JP2010134948A - データ記憶管理システム - Google Patents
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Abstract
【解決手段】各(等価)サーバ161は負荷モニタ・プロセス22Aを備えており、他の負荷モニタ・プロセスと通信して、サーバシステムへのクライアント負荷及び各サーバへのクライアント負荷を測定し、測定したシステム負荷に応答して一組のリソースを再区分することにより、クライアント負荷を再分散するリソース分散プロセスを更に含む。更に、各サーバは、この区分リソースサーバ上で維持されている各リソースへの参照を含む経路指定テーブル20Aを含むこともできる。クライアントからの要求は、対象となるリソースを維持するか或いは管理しているサーバにそうした要求を経路指定する経路指定テーブルの関数として処理される。
【選択図】図10
Description
発明の概要
on write)」プロセスを使ってミラーイメージを作成して、スナップショット作成時から変更されていないボリュームの部分(ページ)が一度記録されるようにする。このミラーイメージは、所望なら後でテープ又は他の超大容量記憶装置に移してもよい。こうした技法は本発明の分野では公知であり、採用する技術は、用途に合わせ又ミラーイメージの量及び他の類似の判断基準に合わせて変更すればよい。
Applications with the TMS320 Family, Volumes I ,II, and III, Texas Instruments
(1990))」に記載されている。更に、高レベルプログラム作成の一般的な技法は公知であり、例えば「スティーブン・G・コーチャン、C言語でのプログラミング、ハイデン・パブリッシング(1983)(Stephen G. Kochan, Programming in C,
Hayden Publishing (1983))」に記載されている。
Claims (21)
- 区分記憶サービスを提供するシステムであって、
少なくとも2つのサーバと、
前記少なくとも2つのサーバにわたり区分された記憶ボリュームと、
前記少なくとも2つのサーバのそれぞれで動作する少なくとも2つのスナップショット・プロセスであって、前記区分記憶ボリュームの状態を表す状態情報を生成するため他の
スナップショット・プロセスと動作を調整可能な、スナップショット・プロセスとを含む、システム。 - 前記スナップショット・プロセスが調整プロセスを含み、当該調整プロセスが、少なくとも他の1つのスナップショット・プロセスと動作を調整して前記区分記憶ボリュームの状態を表す状態情報を生成するためのコマンドを生成する、請求項1に記載のシステム。
- 前記調整プロセスが、スナップショット処理を生成するコマンドにタイムスタンプを打刻するためのタイムスタンプ・プロセスを含む、請求項2に記載のシステム。
- 前記スナップショット・プロセスが、当該サーバにより受信された要求を処理するための要求制御プロセスを含む、請求項1に記載のシステム。
- 前記要求制御プロセスが、当該サーバによる要求の処理を一時中断するための一時中断プロセスを含む、請求項4に記載のシステム。
- 前記要求制御プロセスが、当該サーバにより受信された要求にタイムスタンプを打刻するためのタイムスタンプ・プロセスを含む、請求項4に記載のシステム。
- 前記スナップショット・プロセスが、選択した時刻後に受信された要求を特定するため、一時中断された要求を分析するためのプロセスを含む、請求項1に記載のシステム。
- 前記状態情報を用いて前記記憶ボリュームのコピーを作成するためのアーカイブ・プロセスを更に含む、請求項1に記載のシステム。
- 前記少なくとも2つのサーバにわたって区分された複数の記憶ボリュームを更に含む、請求項1に記載のシステム。
- 区分記憶サービスを提供する方法であって、
少なくとも2つのサーバと当該少なくとも2つのサーバにわたり区分された記憶ボリュームとを提供する段階と、
少なくとも2つのスナップショット・プロセスを前記少なくとも2つのサーバのそれぞれで動作させる段階であって、当該スナップショット・プロセスが、前記区分記憶ボリュームの状態を表す状態情報を生成するため他のスナップショット・プロセスと動作を調整可能な、動作させる段階とを含む、方法。 - 前記区分記憶ボリュームの状態を表す状態情報を生成するため、少なくとも他の1つのスナップショット・プロセスと動作を調整する段階を更に含む、請求項10に記載の方法。
- 調整する前記段階が、スナップショット処理を生成するコマンドにタイムスタンプを打刻する段階を含む、請求項11に記載の方法。
- スナップショット・プロセスを動作させる前記段階が、当該サーバにより受信された要求を処理するための要求制御プロセスを動作させる段階を含む、請求項10に記載の方法。
- 前記要求制御プロセスが、当該サーバによる要求の処理を一時中断するための一時中断プロセスを含む、請求項13に記載の方法。
- 前記要求制御プロセスが、当該サーバにより受信された要求にタイムスタンプを打刻する、請求項13に記載の方法。
- 選択した時刻後に受信された要求を特定するため、一時中断された要求を分析する段階を更に含む、請求項13に記載の方法。
- 少なくとも2つのサーバにわたって分散されている記憶ボリュームのスナップショットを生成する方法であって、
前記少なくとも2つのサーバ上でスナップショット・プロセスを実行する段階と、
前記スナップショット・プロセスのうち第1のスナップショット・プロセスに管理コマンドを与えて、当該スナップショット・プロセスに、前記区分記憶ボリュームの状態を表す状態情報を生成するよう指示する段階と、
前記第1スナップショット・プロセスに保留要求の実行を停止させると共に、少なくとも第2のスナップショット・プロセスに指示させて、保留クライアント要求の実行を停止させる段階と、
前記第2スナップショット・プロセスに、要求の実行が停止されていることを表明させる段階と、
前記第1スナップショット・プロセスに、そのサーバに維持されている記憶区分の状態を表す状態情報を生成させ、前記第2スナップショット・プロセスにそのサーバに維持されている記憶区分の状態を表す状態情報を生成させるスナップショット・コマンドを生成させる段階とを含む、方法。 - 前記管理コマンドが、スナップショットが作成されているデータ・ボリュームをサポートしている第2サーバへの準備コマンドを含む、請求項17に記載の方法。
- 前記状態情報を処理して、前記記憶ボリュームの所定期間保存コピーを生成する段階を更に含む、請求項17に記載の方法。
- 前記第1及び第2スナップショット・プロセスに、前記状態情報が生成された後に保留中の要求を解放させる段階を更に含む、請求項17に記載の方法。
- ストレージ・エリア・ネットワークであって、
少なくとも2つのサーバを備えたデータ・ネットワークと、
前記少なくとも2つのサーバにわたり区分された記憶ボリュームと、
前記少なくとも2つのサーバのそれぞれで動作する少なくとも2つのスナップショット・プロセスであって、前記区分記憶ボリュームの状態を表す状態情報を生成するため他のスナップショット・プロセスと動作を調整可能な、スナップショット・プロセスとを含む、ストレージ・エリア・ネットワーク。
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US44181003P | 2003-01-21 | 2003-01-21 | |
US60/441,810 | 2003-01-21 | ||
US10/761,884 US7937551B2 (en) | 2003-01-21 | 2004-01-20 | Storage systems having differentiated storage pools |
US10/761,884 | 2004-01-20 |
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EP (3) | EP1588357B1 (ja) |
JP (2) | JP4581095B2 (ja) |
AT (1) | ATE405882T1 (ja) |
DE (1) | DE602004015935D1 (ja) |
WO (1) | WO2004066278A2 (ja) |
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- 2004-01-21 WO PCT/US2004/001632 patent/WO2004066278A2/en active Application Filing
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ATE405882T1 (de) | 2008-09-15 |
WO2004066278A2 (en) | 2004-08-05 |
JP4581095B2 (ja) | 2010-11-17 |
WO2004066278A3 (en) | 2006-03-02 |
EP2282276A1 (en) | 2011-02-09 |
EP2159718A1 (en) | 2010-03-03 |
EP1588357A2 (en) | 2005-10-26 |
US20110208943A1 (en) | 2011-08-25 |
EP1588357B1 (en) | 2008-08-20 |
US20040153606A1 (en) | 2004-08-05 |
EP2159718B1 (en) | 2018-07-11 |
US7937551B2 (en) | 2011-05-03 |
US8209515B2 (en) | 2012-06-26 |
EP2282276B1 (en) | 2019-03-20 |
DE602004015935D1 (de) | 2008-10-02 |
JP2006522961A (ja) | 2006-10-05 |
JP5369007B2 (ja) | 2013-12-18 |
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