JP2013539133A5 - - Google Patents

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JP2013539133A5
JP2013539133A5 JP2013531647A JP2013531647A JP2013539133A5 JP 2013539133 A5 JP2013539133 A5 JP 2013539133A5 JP 2013531647 A JP2013531647 A JP 2013531647A JP 2013531647 A JP2013531647 A JP 2013531647A JP 2013539133 A5 JP2013539133 A5 JP 2013539133A5
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Claims (10)

  1. ネットワークを介して読み込み及び書き込み要求を送信するように構成されたクライア
    ントコンピュータと、
    前記ネットワークに結合されて前記読み込み及び書き込み要求を受け取るように構成さ
    れた、複数のストレージデバイスを含むデータストレージサブシステムと、
    を備え、前記データストレージサブシステムは、ストレージコントローラをさらに備え、
    該ストレージコントローラは、
    前記データストレージサブシステムに記憶されたデータ単位を識別するように構成さ
    れ、前記データ単位は、前記複数のストレージデバイスのうちの少なくとも第1のストレ
    ージデバイス及び第2のストレージデバイスにわたって記憶され、前記第1のストレージ
    デバイス及び前記第2のストレージデバイスの各々は、前記データ単位に対応するデバイ
    ス内冗長データを記憶し、前記ストレージコントローラは、
    前記データ単位に対応するデバイス内冗長データの量を前記第1のストレージデバイ
    ス上においてのみ変更する、
    ようにさらに構成される、
    ことを特徴とするコンピュータシステム。
  2. 前記データ単位は、RAIDストライプである、
    ことを特徴とする請求項1に記載のコンピュータシステム。
  3. 前記ストレージコントローラは、前記第1のストレージデバイスの信頼性の変化の指示
    を検出したことに応答して、前記第1のストレージデバイス上に記憶された前記デバイス
    内冗長データの量を変更するように構成される、
    ことを特徴とする請求項1に記載のコンピュータシステム。
  4. 前記ストレージコントローラは、前記複数のストレージデバイスの特性を示すデータを
    記憶するようにさらに構成され、前記信頼性の変化は、前記特性に少なくとも部分的に基
    づく、
    ことを特徴とする請求項3に記載のコンピュータシステム。
  5. 前記ストレージコントローラは、前記第1のストレージデバイスの特性を検出したこと
    に応答して、前記第1のストレージデバイス上に記憶された前記デバイス内冗長性データ
    の量を変更するように構成され、前記特性は、エラー率、アクセス率、使用年数、占有率
    レベル、データの予想寿命、及び記憶されたデータの使用年数のうちの1つ又はそれ以上
    である、
    ことを特徴とする請求項1に記載のコンピュータシステム。
  6. 前記ストレージコントローラは、前記複数のストレージデバイス間の2つの連続するス
    トライプの2つの連続する書き込み間において、前記複数のストレージデバイスのうちの
    少なくとも2つの異なるストレージデバイスについて、ユーザデータ及び対応するデバイ
    ス内冗長データのための記憶空間のそれぞれの量の新しい明確な値を決定する、
    ように構成されることを特徴とする請求項1に記載のコンピュータシステム。
  7. 前記複数のストレージデバイスの各々は、固体メモリを含む、
    ことを特徴とする請求項2に記載のコンピュータシステム。
  8. 前記第1のストレージデバイス及び前記第2のストレージデバイスの各々は、前記デー
    タ単位の記憶されたユーザデータのためのチェックサムをさらに含み、前記ストレージコ
    ントローラは、前記データ単位の少なくとも一部に対する読み込みに応答して、
    前記チェックサムを利用して、対応する読み込みデータを検証し、
    前記チェックサムが、前記読み込みデータが有効でないと示したことを検出したことに
    応答して、デバイス内冗長性データを利用して前記対応する読み込みデータを再生する、
    ように構成されることを特徴とする請求項1に記載のコンピュータシステム。
  9. コンピューティングシステムで使用するための方法であって、
    複数のストレージデバイスを含むデータストレージサブシステムにおいて読み込み及び
    書き込み要求を受け取るステップと、
    前記データストレージサブシステムに記憶されたデータ単位を識別するステップと、
    を含み、前記データ単位は、前記複数のストレージデバイスのうちの少なくとも第1のス
    トレージデバイス及び第2のストレージデバイスにわたって記憶され、前記第1のストレ
    ージデバイス及び前記第2のストレージデバイスの各々は、前記データ単位に対応するデ
    バイス内冗長データを記憶し、
    前記データ単位に対応するデバイス内冗長データの量を前記第1のストレージデバイス
    上においてのみ変更するステップをさらに含む、
    ことを特徴とする方法。
  10. プログラム命令を記憶するコンピュータ可読記憶媒体であって、前記プログラム命令は

    複数のストレージデバイスを含むデータストレージサブシステムにおいて読み込み及び
    書き込み要求を受け取り、
    前記データストレージサブシステムに記憶されたデータ単位を識別する、
    ように実行可能であり、前記データ単位は、前記複数のストレージデバイスのうちの少な
    くとも第1のストレージデバイス及び第2のストレージデバイスにわたって記憶され、前
    記第1のストレージデバイス及び前記第2のストレージデバイスの各々は、前記データ単
    位に対応するデバイス内冗長データを記憶し、前記プログラム命令は、
    前記データ単位に対応するデバイス内冗長データの量を前記第1のストレージデバイス
    上においてのみ変更する、
    ようにさらに実行可能であることを特徴とするコンピュータ可読記憶媒体。
JP2013531647A 2010-09-28 2011-09-20 Raidアレイにおけるデバイス内データ保護 Active JP5848353B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/892,535 US8463991B2 (en) 2010-09-28 2010-09-28 Intra-device data protection in a raid array
US12/892,535 2010-09-28
PCT/US2011/052268 WO2012047500A1 (en) 2010-09-28 2011-09-20 Intra-device data protection in a raid array

Publications (3)

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JP2013539133A JP2013539133A (ja) 2013-10-17
JP2013539133A5 true JP2013539133A5 (ja) 2014-11-06
JP5848353B2 JP5848353B2 (ja) 2016-01-27

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EP (2) EP2622480B1 (ja)
JP (1) JP5848353B2 (ja)
KR (1) KR101821001B1 (ja)
CN (1) CN103339609B (ja)
WO (1) WO2012047500A1 (ja)

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