JP5008845B2 - ストレージシステムとストレージ装置及びその制御方法 - Google Patents
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0626—Reducing size or complexity of storage systems
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
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- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
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- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Description
以下に本発明のストレージシステムとストレージ装置及びその制御方法の実施例について、図面に基づいて説明する。
2 ホストコンピュータ
3 SANスイッチ
4 チャネル
11 チャネル制御部
12 内部スイッチ
13 キャッシュメモリ部
14 ディスク制御部
15 内部パス
16 FM制御部
17 制御メモリ部
50 ハードディスクドライブ
60 ディスク側チャネル
111 プロセッサ
112、164 メモリモジュール
113 周辺処理部
114 チャネルプロトコル処理部
115 データ転送系バス
116 制御系バス
117、121、161 内部ネットワークインタフェース部
122 セレクタ
123 チャネル制御部FM制御部間接続
131 リードキャッシュ領域
132 ライトキャッシュ領域
160 高機能FM制御部
162 DMAコントローラ
163 メモリコントローラ
165 FMコントローラ
166 フラッシュメモリ
167 FMプロトコル処理部
168 コネクタ
169 フラッシュメモリデバイス
172 構成情報
173 通信領域
1001 LUN欄
1002 LBA欄
1003 メディア欄
1004 ホスト−キャッシュアドレス対応リスト
1061、1062、1713、1714 アクセス順序リスト
1063 デステージ回数欄
1064 アクセス回数欄
1065 容量欄
1066 デステージ制限欄
1121 制御プログラム
1122 メールボックス
1123、1641 転送リスト
1610 FM側チャネル
1690 緊急デステージ領域
1711 リードキャッシュディレクトリ情報
1712 ライトキャッシュディレクトリ情報
Claims (3)
- ホストコンピュータからのデータを保存する1以上のメディアと、前記メディアを制御するメディア制御部、チャネルを介して前記ホストコンピュータに接続するチャネル制御部、及び前記ホストコンピュータからのデータを一時的に保存する揮発メモリであるキャッシュメモリ部を備えるストレージ装置を具備するストレージシステムにおいて、
前記メディアは、HDDと、フラッシュメモリとからなり、
前記ホストコンピュータからのリードの要求を受けた際に、格納先が前記HDDか前記フラッシュメモリかを判別し、格納先が前記HDDの場合には前記HDDから読み出したデータを前記キャッシュメモリ部に格納した後に前記ホストコンピュータに応答し、格納先が前記フラッシュメモリの場合には前記フラッシュメモリから読み出したデータを前記キャッシュメモリ部には格納せずに前記ホストコンピュータに応答し、
前記ストレージ装置は、前記フラッシュメモリに対する書き込み回数を平均化するように、デステージするデータを選択し、各々のフラッシュメモリに対するデステージした回数を記録し、デステージするデータを選択する際に、各々の前記フラッシュメモリに対するデステージした回数を比較し、デステージした回数が少ないものから優先的にデステージするデータを決定することを特徴とするストレージシステム。 - ホストコンピュータからのデータを保存する1以上のメディアと、前記メディアを制御するメディア制御部、チャネルを介して前記ホストコンピュータに接続するチャネル制御部、及び前記ホストコンピュータからのデータを一時的に保存する揮発メモリであるキャッシュメモリ部を備えるストレージ装置を具備するストレージシステムにおいて、
前記メディアは、HDDと、フラッシュメモリとからなり、
前記ホストコンピュータからのリードの要求を受けた際に、格納先が前記HDDか前記フラッシュメモリかを判別し、格納先が前記HDDの場合には前記HDDから読み出したデータを前記キャッシュメモリ部に格納した後に前記ホストコンピュータに応答し、格納先が前記フラッシュメモリの場合には前記フラッシュメモリから読み出したデータを前記キャッシュメモリ部には格納せずに前記ホストコンピュータに応答し、
前記ストレージ装置は、前記フラッシュメモリに対する書き込み回数を平均化するように、デステージするデータを選択し、デステージするデータを選択する際に、各々の前記フラッシュメモリに対するデステージした回数およびアクセス回数を基に評価関数を算出し、評価関数が少ないものから優先的にデステージするデータを決定することを特徴とするストレージシステム。 - ホストコンピュータからのデータを保存するメディアを制御するメディア制御部、チャネルを介して前記ホストコンピュータに接続するチャネル制御部、及び前記ホストコンピュータからのデータを一時的に保存する揮発メモリであるキャッシュメモリ部を備えるストレージ装置を制御する方法において、
前記メディアは、HDDと、フラッシュメモリとからなり、
前記ホストコンピュータからのリードの要求を受けた際に、格納先が前記HDDか前記フラッシュメモリかを判別し、格納先が前記HDDの場合には前記HDDから読み出したデータを前記キャッシュメモリ部に格納した後に前記ホストコンピュータに応答し、格納先が前記フラッシュメモリの場合には前記フラッシュメモリから読み出したデータを前記キャッシュメモリ部には格納せずに前記ホストコンピュータに応答し、
前記フラッシュメモリに対する書き込み回数を平均化するように、デステージするデータを選択することを特徴とするストレージ装置の制御方法。
Priority Applications (7)
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JP2005252989A JP5008845B2 (ja) | 2005-09-01 | 2005-09-01 | ストレージシステムとストレージ装置及びその制御方法 |
US11/247,161 US7464221B2 (en) | 2005-09-01 | 2005-10-12 | Storage system, storage device, and control method thereof |
EP06250654A EP1764677A1 (en) | 2005-09-01 | 2006-02-07 | Storage system, storage device, and control method thereof |
US12/250,694 US8332582B2 (en) | 2005-09-01 | 2008-10-14 | Storage system, storage device, and control method thereof |
US13/688,447 US8631199B2 (en) | 2005-09-01 | 2012-11-29 | Storage system, storage device, and control method thereof |
US14/098,575 US9251063B2 (en) | 2005-09-01 | 2013-12-06 | Storage system including a plurality of flash memory devices |
US14/989,965 US9495105B2 (en) | 2005-09-01 | 2016-01-07 | System managing a plurality of flash memory devices |
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JP2005252989A JP5008845B2 (ja) | 2005-09-01 | 2005-09-01 | ストレージシステムとストレージ装置及びその制御方法 |
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JP2007066129A JP2007066129A (ja) | 2007-03-15 |
JP5008845B2 true JP5008845B2 (ja) | 2012-08-22 |
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US20090043961A1 (en) | 2009-02-12 |
US20160179380A1 (en) | 2016-06-23 |
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