TW201135505A - System and method for QoS-based storage tiering and migration technique - Google Patents
System and method for QoS-based storage tiering and migration technique Download PDFInfo
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- TW201135505A TW201135505A TW099123434A TW99123434A TW201135505A TW 201135505 A TW201135505 A TW 201135505A TW 099123434 A TW099123434 A TW 099123434A TW 99123434 A TW99123434 A TW 99123434A TW 201135505 A TW201135505 A TW 201135505A
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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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/065—Replication mechanisms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
- G06F11/3485—Performance evaluation by tracing or monitoring for I/O devices
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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
- G06F3/061—Improving I/O performance
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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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0647—Migration mechanisms
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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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0647—Migration mechanisms
- G06F3/0649—Lifecycle management
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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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0683—Plurality of storage devices
- G06F3/0685—Hybrid storage combining heterogeneous device types, e.g. hierarchical storage, hybrid arrays
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3409—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment for performance assessment
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
- G06F2201/81—Threshold
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- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Computer Hardware Design (AREA)
- Quality & Reliability (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Debugging And Monitoring (AREA)
- Optical Recording Or Reproduction (AREA)
Description
201135505 六、發明說明: 【發明所屬之技術領域】 的領域,並且尤其 4和移轉技術的系 本發明是關於儲存資源及資料管理 是有關一種基於服務品質(QoS)之儲存層 統及方法。 【先前技術】 資 目前可獲用以利於資料儲存系統中提供儲存資源及 料管理的方法實無法提供所欲之效能水準。 資料錯存系統中提供 可獲用解決方案之前 因此,所冀求者為提供能夠在一 儲存資源及資料管理而足可解決目前 述缺點的(多個)系統與(多個)方法。 【發明内容】 從而,本發明之一具體實施例係針對於—種用以在一 健存系統中提供基於服務品f_)之儲存層疊和移轉的方 2 ’該方法包含下列步驟:當—應用程式程序存取該儲存 ,、:先之帛-錯存層疊時對該應用程式程序進行監視;基 於該監視結果,決定該應用程式程序0 QoS因數測量值; 將該Q。S因數測量值比較於下列至少—者:_第一預定⑽ 因數_值(即如一層叠門檀值)和一第二預"。S因數門 :(Ρ如移轉門檻值當該比較結果表示該QoS因數測 量值大於該第—預$⑽因數fl㈣時,產生—「時間點 (PlT)J拷貝並且將該pir拷貝的存取准允建立為「唯, 201135505 其中該Ριτ拷貝係依據該第一儲存層疊;當該比較結果表示 該Q〇s因數測量值小於該第一預定Q〇s因數門檻值並且大 於該第二預定Q〇S因數門檻值時,將資料自該卩汀拷貝移 轉至一第二儲存層疊;在完成將資料自該piT拷貝移轉至該 第二儲,層叠之後,將該第二儲存層疊的建立存取准允設 定為「讀寫」並且將I/O命令導引至該第二儲存層疊;當該 比較結果表示該QoS因數測量值小於該第—預定因數 門檻值並且小於該第二預定Q〇S因數門檻值時,將該第二 儲存層疊資料映射至該第一儲存層疊;當該第二儲:層: 之資料至該第一儲存層疊的映射為同步化時,將讀取命令 導引該第二儲存層疊;當該第二儲存層叠之資料至該第二 儲存層叠的映射為同步化時,同步化該第—儲存層疊與該 第一儲存層疊之間的寫入命令。 本發明之-進-步具體實施例係針對於一種電腦程式 產品,其中包含:一信號載荷媒體,該者載荷:電腦可使 用程式碼,此程式碼係經組態設定以當一應用程式程序存 取該儲存系統之一第一儲存層疊時對該應用程式程序進行 監視;電腦可使用程式碼,此程式碼係經組態設定以基於 該監視結果,決定該應用程式程序的Q〇s因數測量值;電 腦可使用程式碼,此程式碼係經組態設定以將該q〇s因數 測量值比較於下列至少-者:一第—預定⑽因數門植值 和一第二預定QoS因數門檻值;電腦可使用程式碼,此程 式碼係經組態設定以當該比較結果表示該Q〇s因數測量值 大於該第一預定QoS因數門檻值時,產生一「時間點(piT)」 201135505 拷貝並且將該ΡιΤ拷貝的存取准允建立為「唯讀」,其中該 Pit拷貝係依據該第一儲存層疊;電腦可使用程式碼,此程 式碼係經組態設定以當該比較結果表示該Q0S因數測量值 小於該第一預定QoS因數門檻值並且大於該第二預定Q〇s 因數門檻值時,將資料自該piT拷貝移轉至一第二儲存層 疊;電腦可使用程式碼,此程式碼係經組態設定以在完成 將資料自該PiT拷貝移轉至該第二儲存層疊之後,將該第二 儲存層疊的建立存取准允設定為「讀寫」並且將1/0命令導 引至該第二儲存層疊;電腦可使用程式碼,此程式碼係經 組態設定以當該比較結果表示該Q〇S因數測量值小於該第 一預定QoS因數門檻值並且小於該第二預定Q〇s因數門檻 值時,將該第二儲存層疊資料映射至該第一儲存層疊;電 腦可使用程式碼,此程式碼係經組態設定以當該第二儲存 層疊之資料至該第一儲存層疊的映射為同步化時,將讀取 命令導引該第二儲存層疊;電腦可使用程式碼,此程式碼 係經組態設定以當該第二儲存層疊之資料至該第一儲存層 疊的映射為同步化時,同步化該第一儲存層疊與該第二儲 存層疊之間的寫入命令。 本發明之又一進一步具體實施例係針對於一種儲存系 統,其中包含:一處理器;一記憶體,該者係經連接至該 處理器;以及用以在該處理器上運行的控制程式設計,其 中該控制程式設計係經組態設定以:當_施m 田應用裎式程序存 取該儲存系統之一第一儲存層疊時對該應用 怔%程序進行 監視;基於該監視結果’決定該應用程式鞋 、程序的Q〇S因數 6 201135505 測直值,將該Q 〇 S因數測量值比較於下列至少_者· 一第 一預定QoS因數門檻值(即如一層疊門檻值)和—第二預定
QoS因數門檻值(即如一移轉門檻值);當該比較結果表示該
QoS因數測量值大於該第一預定Q〇s因數門檻值時,產生 一「時間點(PiT)」拷貝並且將該PiT拷貝的存取准允建立 為「唯讀」,其中該PiT拷貝係依據該第一儲存層疊;當該 比較結果表示該QoS因數測量值小於該第一預定Q〇s因數 門檻值並且大於該第二預定QoS因數門檻值時,將資料自 該ρ!τ拷貝移轉至一第二儲存層疊;在完成將資料自該Ητ 拷貝移轉至該第二儲存層疊之後,將該第二儲存層疊/的建 立存取准允設定為「讀寫」並且將1/〇命令導引至該第一儲 存層疊;當該比較結果表示該Q〇S因數測量值小於該第二 預定QoS因數門檻值並且小於該第二預定Q〇s因數門植值 時’將該第二儲存層疊資料映射至該第一儲存層疊;♦鲸 第二儲存層疊之資料至該第一儲存層疊的映二同:: 時,將讀取命令導引該第二儲存声聶.备 . 仔層疊,虽该第二儲存層疊 之資料至該第一儲存層疊的映射為同+作# 耵為冋步化時,同步化該第 一儲存層疊與該第二儲存層疊之間的寫入命令。 應瞭解前揭概要敘述及後文詳細說明兩7者皆僅為 性且解釋性’巾非必然地限制所主張之發明。竣併入於: 專利文件之内且構成其-部份的隨附圖式說明多項务 具體實施例,並且連同概略說明以解釋本發明原理 【實施方式】 7 201135505 現將詳細參照說明本發明的較佳具體實施例,其等範 例可如隨附圖式所表示。 +夕目則商業可獲用之儲存層疊機制可為依照下列項 目為基礎· 1)母個儲存空間位元組的成本· 2)資料存取樣 )將低度存取之:貝料移轉並放置在較低類別的儲 =置。然而,該等目前商業可獲用之儲存層疊機制無一 係針對屬使用者按逐日方式所存取之資料的品質特 點。此外,在該等目前商業可獲用之儲存層疊機制中,並 無,獲用可組態設定的基於服務品質(Q0S)參數(注意:「服 務叩質(QoS)」亦可簡寫為(Q〇s))來設定資料存取延遲門椤 =藉以依照應用程式程序和使用者資料來觸發層疊/㈣ 程序。 本發明的(多個)系統及(多個)方法,像是本案文令所揭 =者’可提供按逐制者及/或逐應用程式之 設定應用程式資料延遲門根值,使得能夠觸二 =機制(即如健存移轉機制)以將應用程式資料移動至 =:?存物。除此之外,本發明的(多個二 象疋本案文中所揭示者,可進—步提供下 υ促使顯著地改善與由儲存子系統所主置之應用、· 聯的QoS水準· 2)盘辟六六仏上 ^ 式相關 性,以利確伴完整地==的可預測延遲;3)可調 一 L運用儲存請俾提供最高qgS,夢 尚效能層叠方面提供完全的「投資報酬率( :在 令人工官理,藉以針對具有企業關鍵 ^進 應用需要改善㈣幻次時間關鍵性的 )基於⑽門檻值進行較低執行儲存 201135505 的自動再層疊;6)依據QoS門檻值將使用者及應用程式資 料自動地移轉至不同的儲存層疊;7)在共享儲存物上維持〇 預測應用程式效能方面獲致顯著的改善結果;8)在與應用程 式特定資料存取相關聯的延遲方面獲致顯著的改善結果7 9)自動的政策性層疊及移轉作業而無須人工介入;以及ι〇) 預測性的模型化及投射,藉以依照歷史使用情況來建議所 需的高效能層疊功能性和較低的執行層疊。同時,本發明 的(多個)系統及(多個)方法,像是本案文中所揭示者,可涉 及到由一管理者依照逐使用者、逐應用程式方式來改變2 業層級可組態設定QoS參數。又進—步,本發明的(多個) 系統及(多個)方法可依據在使用者層級及/或應用程式資料 層級處所施用之QoS概念以提供自發性的儲存層疊及移轉。 現概要參照圖1八、18及3八到3C,其中’根據本發明 之一示範性具體實施例,顯示一儲存系統丨〇〇,其上可實作 為提供基於服務品質之儲存層疊和移轉技術的方法。在示 範性具體實施例裡,該儲存系統100可含有一處理器1〇2。 在進一步具體實施例裡,該儲存系統1〇〇可進一步包含— 記憶體1〇4(即如「隨機存取記憶體(RAM)」)。該儲存系統 i〇o可進一步包含一匯流排106。例如,該處理器1〇2及該 記憶體1〇4可為連接至該匯流排1〇^在本發明的目前具體 實施例裡,該儲存系統100可含有—儲存子系統,此者可 進一步含有複數個儲存層疊,像是—第一儲存層疊1〇8及 一第二儲存層疊112。各個儲存層疊可含有—或更多儲存裝 置’而該等、组成對於該儲存層疊的儲存貝宁池(即如—基底容 9 201135505 積108)。此外,該第一儲存層疊可為與該第二儲存層疊不 同類別的儲存物,這兩種儲存層疊是由屬於該第一層疊之 儲存裝置的效能比較於屬於該第二層疊之儲存裝置的效能 所區分(即如一層疊之儲存裝置可為比起另一層疊之儲存裝 置具有較高效能的儲存裝置)。在本發明的進一步具體實施 例裡,該儲存系統100的儲存子系統可經由該匯流排 連接至該處理器i 02及該記憶體丨〇4。在本發明的又進一步 ㈣實施例裡’該系統100可經組態設定(即如透過該處‘ 益102在上所執行的控制程式)以經由該儲存系統⑺〇,且/ 或於其之内’執行提供基於服務品f(Q〇s)之儲存層疊和移 轉的方法,即如後文中所詳述者。 現參照圖4’說明一流程圖,其中說明一(根據本發明 之進一步不範性具體實施例)為以在一儲存系統中提供 基於服務品質_)之儲存層疊和移轉的方法。該方法_ 可包3下列步驟:當一應用程式程序存取該儲存系統之一 第一儲存層疊時,對該應用程式程序進行監視術。例如, 在^發明㈣存系统_裡’當—或更多應用程式程序存 取^ 一儲存層叠(即如圖以及1B所示者)的儲存貯池(即 如一土底谷積108)時,可對屬於/對應於該等應用程式程序 更,q°s因數16°進行監視(即如連續地監視及/ )。在本發明的示範性具體實施例裡,該等QOS因數 ⑽可為關聯於/屬於/對應於料應用 Q〇S因數。圖ία說明,去.拥,士 〇即時 位於一最佳水準 :在執行時間過程中⑽因數⑽ 複數個應用程式程序150存取該第一 201135505 儲存層疊的儲存貯池1 08。可按即時 iji Λ ^ 式進行監視(即如取 樣),藉以只要該等應用程式程序15〇為 臣*损窗口基妨y. , 用中京尤會保持該 =二 發明的目前具體實施例裡,該等^ 口數16"可按即時方式掌控該等應用程式…5〇的一 4伤可包含,然不限於此,下列 續取延遲;寫入延 遲;儲存媒體回應時間;閑置時間(即如當並未執行作用中 頌取/寫入時的時間);資料的普用性(即如所寫入及讀取的 貧料在該儲存子系統之儲存裝置内所主置的應用程式共享 内為雄切相近)’資料的本地性(即如所在& β > 、 所存取之(多個)特定資 :位置相較於他者的程度);資料的年齡;以及應用程式檔 案的年齡。 、在進-步具體實施例裡,依照該監視結果而定,該方 法4〇0可進—步包含決㈣應用程式程相QoS因數測量 值40扣例如,當對(關聯於)該等應用程式程序15〇的(多個) Q s因數測里值! 6〇進行監視時,可決定該(等)Q〇s因數 的(多個)讀值或(多個)測量值。可在監視過程中連續地決定 這些測量值(即如QoS因數測量值)。然在一段時間之後,與 —特定應用程式程序15〇相關聨的一或更多Q〇s因數16〇 可能會開始劣化(即如經由圖1B之「關鍵QoS」標號所示), 故而影響到對於該應用程式程序的整體Q〇s門檻值。在本 發明的示範性具體實施例裡,該方法4〇〇可進一步包含下 1步驟.將5亥Q 〇 S因數測量值比較於如下至少一者:一第 預定QoS Η檻值(即如一「層疊門檻值(TTH)」)以及一第 —預疋QoS因數門檻值(即如一「移轉門檻值(μτη)」)406。 11 201135505 在本具體實施例裡,該等門檀值可作為該系統1GG之延遲 、觸^點。例如,依據該比較結果而定該「層疊門檻值」 二移轉門檻值」可作為觸發點,藉以觸發該系統1 〇〇 刀、也執仃—序列步驟以:a)進行儲存層疊;或b)將應用程 弋:貝料移轉至一不同類別的儲存物’即如後文中進一步詳 述圖2所不之圖形表示(即如圖形)200說明依照取樣時間 (P 士孤視時間)所點繪之q〇s因數(即如與應用程式資料相 關聯的儲存延遲)的(多個)q〇s水準,測量值。圖形2〇2的一 第範圍說明當該應用程式程序1 50按照最佳Q〇s水準運 订時的時間點。實、線204是表示實際的非層疊儲存延遲。 虛線206表示所預測的非層疊儲存延遲。點線2〇8則表示 在既已將該應用程式資料層疊至不同類別(即如層疊)之儲 存物後所測得的貫P祭儲存延遲^在該取樣時段(sp)裡,可憑 藉省等觸發門檻值(即如該「層疊門檻值」和該「移轉 門檻值(ΜΤΗ)」)對Q0S水準進行測量並比較。 在本發明的示範性具體實施例裡,該方法4〇〇可進一 步包含,當該比較結果表示該Q〇s因數測量值大於該第一 預定QoS門檻值時,產生一「時間點(piT)」拷貝並且將該 Pit拷貝的存取准允建立為「唯讀」,其中該p汀拷貝係依 據該第一儲存層疊408。例如,即如圖3A所示,當該Q〇s 因數測量值相對於言亥「層疊門檀值(TTH)」㈣較結果表示 該QoS因數測量值大於該TTH時,可基於該第一儲存層疊 以建立-或更多的PlT拷貝U〇 (即如piT快照或ριΤ)(即 如可在該基底容積108之外建立 12 201135505 在本發明的進一步具體實施例,該方法400可進一步 包含當該比較結果表示言亥Q〇S因數測量值小於該第一預定 QoS因數門檻值並且大於該第二預定⑽因數門檻值時, 將資料自該m拷貝移轉至一第二儲存層疊41〇。例如,即 如圖3Β所示,當該Q0S因數測量值相對於該「層疊門檻值 (TTH)」和該「移轉門檻值(MTH)j )的比較結果表示該q〇s 因數測量值小於該TTH但是大料MTH時,可將資料自該 等一或更多PiT拷貝(即如多個PiT) u〇移轉至一第二(即如 次一)儲存層疊112。可實作一種啟發式方式,藉以 該資料時促使避免在該(等)Q0S目數測量值(即如該q〇s) 可能快速波動的情況下於多個門檻值之間出現猛移。 在本發明的目前具體實施例裡,該方法4〇〇可進一步 包含在既已完成將資料㈣PiT肖貝移轉至該第二儲存^ 疊之後,將該第二儲存層疊的建立存取准允設定為「讀 寫」,並且將i/o命令導引至該第二儲存層疊412。例如, -旦所有來自該等-或更多PiT拷貝11〇的資料皆已被移轉 至該第二儲存層疊112之後,即可將入方1/〇重新導引至該 第二儲存層疊112並予祠服’並且將該第二儲存層疊 的存取准允設定為「讀寫(R/W)」,同時從該基底容$ ι〇8 連續地產生PiT拷貝。 在本發明的示範性具體實施例裡,該方法4〇〇可進一 步包含’當該比較結果表㈣qos因數測量值為小於該第 -預定QoS因數門檻值並且小於該第二預定⑽因數門栌 值時,將該第二儲存層疊資料映射至該第一儲存層疊4141 13 201135505 ,如’即如圖3C所示,當該Q〇s因數測量值相對於該「層 疊門檻值和該「移轉門檻值(mth)j )的比較結果表 不該因數測量值小於該丁TH且同時小於該ΜΤΗ時, 可將該第二儲存層疊1121内的資料映射至該第一儲存層 疊108 °當映射該資料時可實作—種啟發式方式,藉以避免 於多個門檻值之間出現猛移。 在本發明的進一步具體實施例裡,該方法400可進一 步包含,當該第二儲存層疊之資料至該第-儲存層疊的映 射為同步化時’將讀取命令導引該第二儲存層疊416,並且 同步化該第一儲存層疊與該第二儲存層叠之間的寫入命令 418。例如’當映射(即如映射)係經同步化後,所有讀取皆 可由及第—層〶1 1 2所伺服’並且所有寫人皆可在該基底 容積108與該第二層疊112之間同步化。 。應/主意到可利用傳統一般目的性並根據本發明教示所 ,式設計之數位電腦以簡便地實作前文所述的本發明具體 實施例,即如熟諳本項技藝之人士所能顯見者。而即如熟 諸軟體技藝之人4- %平4 ^ 所果知’雄可由專業程式設計人員依據 本揭示之教示隨即備製適當的軟體編碼。 應瞭解確能按軟體套裝之形式以便利地實作本發明。 .u套裝可為一電腦程式產品’此者運用含有電腦程 式馬的電細可璜取儲存媒體,該程式碼係用以程式設定— 電腦以執行本發明的所揭示功能與程序。該電腦可讀取媒 體/電腦可讀取儲在拔a 存媒體可包含任何類型的傳統軟碟片、光 ,'片CD R〇m、磁碟片、硬碟機、磁光碟片、、“Μ、 14 201135505 EPROM、EEPROM、磁性或光學卡,或是任何其他適用於 儲存電子指令的媒體,然不限於此。 應瞭解前揭方法中的特定步驟次序或階層為示範性方 式的範例。依據設計偏好而定,應瞭解可將該方法中的特 定步驟次序或階層加以重排而同時仍保持歸屬於本發明範 _内。後載之方法請求項是按—樣本次序方式來呈現各種 步驟的要素,,然並非欲以限制於所呈現的特定次序或階層。 據信將能藉由前揭說明以瞭解本發明及其諸多伴生優 點。同時據信將能顯知確可在其元件之形式、建構和排置 方面進仃各種變化,而不致悖離本發明範疇與精神或是犧 牲其所有的實質優點。前文所述形式僅為其—示範性具體 實施例’而其目的係後載之巾請專利範圍應涵蓋並納入該 【圖式簡單說明】 式以更佳地瞭 °曰本項技藝之人士可藉由參照隨附圖 解本發明的眾多優點,其中: 圖1A為— 行日守間過程中當 在最佳水準時, 用程式程序之區 (根據本發明之一示範性具體實施例)在執 與複數個應用程式程序相關的Q〇s因數是 該等存取本發明儲存系統之儲存貯池的^ 塊圖說明; 根據本發明 當與 時, 之區 複數個應用裎彳和产 礼,,、砠頁^ 工私序之一者相關的Q〇S因數既e 子本發明儲存系統之儲存貯池的應用程式 15 201135505 塊圖說明; 圖2為一(根據本發明之一示範性具體實施例)對於 本發明之一示範性儲存系統,說明依照取樣時間所點繪之
QoS因數測量值,並連同層疊門檻值和移轉門檻值觸發點設 定值的圖形表示; 圖3A為一(根據本發明之一示範性具體實施例)當 QoS因數測量值與該「層疊門檻值(TTH)」的比較結果是表 示該QoS因數測量值大於該TTH時,本發明之儲存系統内 的活動情況(即如資料流)之區塊圖說明; 圖3B為一(根據本發明之一示範性具體實施例)當 QoS因數測量值與該「層疊門檻值(TTH)」和該「移轉門檻 值(MTH)」的比較結果是表示該q〇s因數測量值小於該ττΗ 而大於該MTH時,本發明之儲存系統内的資料移轉之區塊 圖說明; 圖3C為一(根據本發明之一示範性具體實施例)當 QoS因數測量值與該「層疊門檻值(TTH)」和該「移轉門檻 值(MTH)」的比較結果是表示該q〇s因數測量值小於該tth 且小於該MTH時,本發明之儲存系統内可能出現的資料映 射之區塊圖說明;以及 圖4說明—流程圖,其中說明一(根據本發明之一進 一步不$&性具體實施例)為以在一儲存系統中提供基於服 務品質(QoS)之儲存層疊和移轉的方法。 【主要元件符號說明】 16 201135505 100 儲存系統 102 處理器 104 記憶體 106 匯流排 108 第一儲存層疊 110 時間點(PiT)拷貝 112 第二儲存層疊 150 應用程式程序 160 服務品質(QoS)因數 200 圖形表示 202 圖形的一第一範圍 204 實線 206 虛線 208 點線 400 在一儲存系統中提供基於服務品質(QoS)之儲 存層疊和移轉的方法 402〜418 步驟 17
Claims (1)
- 201135505 七、申請專利範圍: 1. 一種用以在—儲存系統中提供基於服務品質(QoS)之 儲存層疊和移轉的方法,該方法包含: 當一應用裎式程序存取該儲存系統之一第一儲存層疊 時對έ玄應用程式程序進行監視; 基於該監視結果,決定該應用程式程序的QoS因數測 量值; 將該QoS因數測量值比較於下列至少一者:一第一預 疋QoS因數門檀值和—第二預定Q〇s因數門檻值;以及 當該比較結果表示該q〇s因數測量值大於該第一預定 QoS因數門檻值時,產生一「時間點(piT)」拷貝並且將該 ΡιΤ拷貝的存取准允建立為「唯讀」,其中該piT拷貝係依 據該第一儲存層疊。 2. 如申請專利範圍第丨項所述之方法,進一步包含: 當該比較結果表示該qos因數測量值小於該第一預定 QoS因數門檻值並且大於該第二預定Q〇s因數門檻值時, 將資料自該ΡιΤ拷貝移轉至一第二儲存層疊。 3. 如申請專利範圍第2項所述之方法,進一步包含: 在完成將資料自該PiT拷貝移轉至該第二儲存層疊之 後,將該第二儲存層疊的建立存取准允設定為「讀寫」並 且將I/O命令導引至該第二儲存層疊。 4_如申請專利範圍第3項所述之方法’進一步包含: 當該比較結果表示該q〇S因數測量值小於該第—預定 Q〇S因數門檻值並且小於該第二預定Q〇s因數門檻值時, 18 201135505 將該第二儲存層叠資料映射至該第一儲存層疊。 5·如申請專利範圍第 各㈣μ 項所述之方法,進-步包含: 田该第二儲存層疊之眘 同步化睥u. V至该第—儲存層疊的映射為 Κ匕夺,將讀取命令導引該第二儲存層疊。 ?:申請專利範圍第5項所述之方法,進一步包含: 田名第一儲存層疊之資料 . 同步化時,同步化” ^ 儲存層疊的映射為 '^第一儲存層疊與該第二儲存層疊之間 的寫入命令。 J B如申凊專利範圍第i項所述之方法,其中該⑽因 列:=值係依據該儲存系統的⑽因數,該¥因數為下 歹之至乂 -者.讀取延遲;寫人延遲;儲存媒體回應時間; 閑置時間;資料普用性;資料本地性;資料年齡;以及應 用程式擋案年齡。 8 ’如申叫專利範圍第丨項所述之方法,其中該第一預定 Q〇s因數門檻值為一層疊門檻值,並且該第二預定Q〇s因 數門襤值為一移轉門檻值。 9· 一種電腦程式產品,其中包含: 一信號載荷媒體,該者載荷: 經組態設定以當一應用程式程序存取該儲存系統 之第一儲存層疊時對該應用程式程序進行監視的電腦可 使用程式碼; 經組態設定以基於該監視結果,決定該應用程式 程序的QoS因數測量值的電腦可使用程式碼; 經組態設定以將該Q〇S因數測量值比較於下列至 201135505 者的電知可使用程式碼:一第一預定QoS因數門檀值 和一第二預定QoS因數門檻值;以及 經組態設定以當該比較結果表示該Q〇S因數測量 值大於該第一預定QoS因數門檻值時,產生一「時間點 (PiT)」拷貝並且將該PiT拷貝的存取准允建立為「唯讀」 的電腦可使用程式碼,其中該piT拷貝係依據該第一儲存層 疊。 10·如申請專利範圍第9項所述之電腦程式產品,該信 號載荷媒體進一步載荷: 經組態設定以當該比較結果表示該Q〇S因數測量值小 於該第一預定QoS因數門檻值並且大於該第二預定Q〇s因 數門檻值時,將資料自該PiT拷貝移轉至一第二儲存層疊的 電腦可使用程式碼。 11.如申請專利範圍第1 〇項所述之電腦程式產品,該信 號載荷媒體進一步載荷: 經組態設定以在完成將資料自該PiT拷貝移轉至該第 二儲存層疊之後,將該第二儲存層疊的建立存取准允設定 為「讀寫」並且將I/O命令導引至該第二儲存層疊的電腦可 使用裎式碼。 1 2.如申請專利範圍第11項所述之電腦程式產品,該信 號載荷媒體進一步載荷: 經組態设疋以當該比較結果表示該Q〇S因數測量值小 於s玄第一預定QoS因數門檻值並且小於該第二預定q〇s因 數門檻值時’將該第二儲存層疊資料映射至該第一儲存層 20 201135505 疊的電腦可使用程式碼。 13·如申清專利範圍第12項所述之電腦程式產品,該信 號載荷媒體進一步載荷: 經組怨设定以當該第二儲存層疊之資料至該第一儲存 層豐的映射為同步化時’將讀取命令導引該第二儲存層疊 的電腦可使用程式碼。 4.如申請專利範圍第13項所述之電腦程式產品,該信 號載荷媒體進一步载荷: 經組態設定以當該第二儲存層疊之資料至該第一儲存 層疊的映射為同步化時,同步化該第—儲存層疊與該第二 儲存層疊之間的寫入命令的電腦可使用程式碼。 15·如申請專利範圍帛9項所述之電腦程式產品,其中 該QoS因數測量值係依據該儲存系統的q〇s因數,該⑽ 因數為下列之至少-者:讀料遲;寫人延遲;儲存媒體 回應時間;閑置時間;資料普用性;資料本地性;資料年 齡;以及應用程式檔案年齡。 ' 16_如申請專利範圍第9項所述之電腦程式產品,其中 該苐一預定QoS因數門;„ 数门檻值為一層疊門檻值,並且該第二 預疋QoS因數門檻值為一移轉門檻值。 1 7. —種儲存系統,其中包含: 一處理器; 用以在該處理器上運行的控制程式設計,兑 程式設計係經組態設定以:當_ 應用私式程序存取該儲才: 21 201135505 系統之一第一儲存層疊時對該應用程式程序進行監視;基 於該監視結果,決定該應用程式程序的Q〇S因數測量值; 將該QoS因數測量值比較於下列至少一者:一第—預定 因數門檻值和一第二預定QoS因數門檻值;當該比較結果 表示該QoS因數測量值大於該第一預定Q〇s因數門檻值 時’產生一「時間點(PiT)」拷貝並且將該piT拷貝的存取 准允建立為「唯讀」,其中該PiT拷貝係依據該第一儲存層 疊。 18 ·如申請專利範圍第17項所述之儲存系統,其中該控 制程式設計係經m態設定以:當該比較結果表示該 q〇s因數測量值小於該第一預定Qos因數門檻值並且大於 該第二預定QoS因數門檻值時,將資料自該Ριτ拷貝移轉 至-第二儲存層疊;在完成將資料自該piT拷貝移轉至該第 二儲存層#之後,將該第二儲存層疊的建立存取准允設定 為「讀寫」並且將1/0命令導引至該第二儲存層疊;當該比 較結果表示該Qos因數測量值小於該第一預定Q〇s因數fi 檻值並且小於該第二預"os因數門檻值時,將該第二儲 2層且資料映射至該第—儲存層疊;當該第二儲存層疊之 資料至該第-儲存層疊的映射為同步化時,將讀取命令導 引該第二儲存層疊;當該第:健存層疊之資料至該第一儲 存層疊的映射為同步化時1步化該第一錯存層疊與該第 一儲存層疊之間的寫入命令。 19·如申請專利範圍帛17項所述之儲存系統,其中該 ⑽因數測量值係依據該儲存系統的⑽因數,該㈣因 22 201135505 .數為τ列之至少一者:讀取延遲;寫入延遲;儲存媒體回 應時蘭,間置時間;資料普用性;資料本地性,·資料年齡: 以及應用程式槽案年齡。 2〇.如申請專利範圍第丨7頊所述之儲存系統,其中該第 一預定Q〇s因數門檻值為一層燊門檻值,並且該第二預定 QoS因數門檻值為一移轉門檻值° 頁 : 次 式如 圖 C 八 23
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