TW200809595A - Data storage device and method of retrieving data therefrom - Google Patents

Data storage device and method of retrieving data therefrom Download PDF

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TW200809595A
TW200809595A TW096105001A TW96105001A TW200809595A TW 200809595 A TW200809595 A TW 200809595A TW 096105001 A TW096105001 A TW 096105001A TW 96105001 A TW96105001 A TW 96105001A TW 200809595 A TW200809595 A TW 200809595A
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storage device
data storage
data
hard disk
host
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TW096105001A
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English (en)
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Teng Pin Poo
Henry Tan
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Trek 2000 Int Ltd
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/002Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/20Error 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
    • G06F11/2053Error 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
    • G06F11/2056Error 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
    • G06F11/2087Error 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 with a common controller
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02Addressing or allocation; Relocation
    • G06F12/08Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10Digital recording or reproducing
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0602Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0614Improving the reliability of storage systems
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0628Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0646Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
    • G06F3/065Replication mechanisms
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/06Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601Interfaces specially adapted for storage systems
    • G06F3/0668Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671In-line storage system
    • G06F3/0673Single storage device
    • G06F3/068Hybrid storage device
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508Magnetic discs
    • G11B2220/2516Hard disks
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/40Combinations of multiple record carriers
    • G11B2220/41Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/60Solid state media
    • G11B2220/61Solid state media wherein solid state memory is used for storing A/V content

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Storage Device Security (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Description

200809595 九、發明說明: 【發明所屬之技術領域】 關於利用二種不同類型之資料健存媒體之資 【先前技術】 近年來,資料儲存裝置領域有相當大的進展。 PCT/SG00/0^029 # t t # ^ t f4 # ^ ^ ^ ^ 厂.八匕合一具有一整合通用串列匯流排(USB, rsal Seriai Bus)接頭之殼體,以及-位於上述般 固態(即積體電路型)記憶裝置,如快閃記 Μ目。Λ 於2000年2月底首次問世時容量僅有 目别市面上則可見到容量遠大於此者。 ,相彷’硬碟技術亦進步迅速,市面上可見到容量至 達tGB之可攜式資料儲存裝置,而其大小可应上述固 悲可攜式資料儲存裝置相媲美。 /、 【發明内容】 及演地算為法提供-新穎且實用之資料储存裝置以 二=揮=儲存聚置’其包含二資料館存媒趙: 更寒/、#揮發性固態記憶裝置。該資 收欲儲存之資料係儲存、U置所接 裝置二者中。由於資料夕 、5亥非揮發性固態記憶 中之-擷取資料發生^存經複製’若由儲存媒體之其 料。 生問心仍可自另—错存媒體擷取資 312XP/發明說明書(補件)/96-05/96105001 5 200809595 番f二思者’易造成硬碟與非揮發性固態記憶裝 ^ t之環境破壞各有不同。因此,較諸僅利用 I: 儲t媒體之資料儲存裝置,本發明之資 :二:、置較不易毀損。此係因於本發明所提出 之貧料儲存裝置中,二儲存媒體之至少其一中所 儲存之/料未遭毁損之可能性較高。 Η-,:料儲存衣置係用以與一主機相連接,而該主機利 指令控制該資料儲存裝置,例如依據儲存於 二中執行之第一驅動軟體。該主機所產生 ^ "貝料館存I置之寫人與讀取指令可使用習知 财此種情形下’該主機無須「知悉」其所傳送欲 儲存之貧㈣儲存於雙重儲存媒體中。㈣應 震置將資料寫入二資料儲存媒體中:於接 =-“準讀取指令時’該資料儲存裝置則自硬碟 料,並將其傳送至主機。 貝 盥=而’若需自快閃記憶體擷取資料,該資料儲存裝置可 接::驅=:(例如,當時正於該可攜式儲存裝置所連 =另-不同主機上執行)併同使用,以自快閃記㈣ :貧科。此第二驅動軟體可經料以產生具有特殊格式^ 讀:指令’該讀取指令指示自快閃記憶;; 而非硬碟。 貝砜作菜, 若存在一安全程序可資依據,上述 設計而僅執行特殊之讀取指令。舉例而1储;=亦可經 碼驗證作業。 W求進行密 312ΧΡ/發明說明書(補件)/96-〇5/96105001 6 200809595 【實施方式】 僅為例示之目的, 例。 將參照隨附圖式說明本發明之—具 請參照圖卜所示之 罟,立I古—紅_ /、篮例為一貪料儲存梦 八’、有 Λ又體1以及一盘靖濟1沫日田拉 又 3(如- 接頭,缺可又體1相固接之USB介面
^ ffl .....了月匕包έ 一 USB介面積體電路)。USB 介面3係用以盥一本她y πςβ,, ,s. 主祛(如一個人電腦)相連接,例如將 USB接頭插入主機之插座。_介面3可與_ 字 訊。控制器5本身則可盥一快 工】时5通 J 4 ^ 快閃圮憶體7以及一硬磔s、s 訊。殼體1以小至資粗神六壯μ „ 又示δ通 貝枓储存I置易於攜帶為佳,例 於使用者之口袋中彳邪J置 之拳頭中。衣中甚至可小至可藏於使用者緊握 硬碟8為-「可移除式硬碟機」,即其屬於外接於主 系統之硬碟機類型之意。此外,具體例之硬碟8可視 自殼體1移除。其使硬碟8可於容量不足時予以更替。確 切來說,硬碟8可為複數個不同硬碟之一,可視需求嵌入 殼體1中…般而言,於資_存裝置初始化過程中硬 8均存在。 , 控制器5與快閃記憶體7以及硬碟8之間之通訊路徑9 包含一或多個資料匯流排與控制線路。控制器5與硬碟8 間存在一介面,其可為一支援4—bit資料匯流排之安全數 位輸入/輸出(SDIO,Secure Digital Input/Output)介 面,然於其他具體例中,上述介面可為任何其他媒體介 面例如整合電子式驅動(IDE, Integrated Drive 312XP/發明說明書(補件)/96-05/96105001 7 200809595
Electronics)介面等。 上述具體例係與第一驅動軟體 體係於一主機上劫—^ 用茲弟一驅動軟 令。上述笛一s 主機並可產生讀取以及寫入指 述資料軟體可採用習知之形式。如下所述,上 4貝料儲存裝置回庫耷 j 入快閃記憶體7以及硬二”:將傳送自主機之資料寫 回應一讀取指令而自硬碟8讀取料储存裝置 此,就習知之驅動軟體而古,:二亚运至主機。因 知之資料儲存裝置相同。^〜、-例運作之方式與已 以二η發:之資料儲存裝置亦可以一第二驅動軟體加 二 =稭以存取快閃記憶體”之資料。上述第二驅動 、斤入生^買取指令,其格式與第一驅動軟體所產生之 口貝取扣々不同,且控制器5將之識別 Γ:執7讀=送至資嶋 仃此作業。上述第二驅動軟體可如同第一驅動軟 般於同一主機上提供’或位於一當時與具體例相連接之 不同主機上。即便硬碟機8毀損,上述第二驅動軟體亦可 達成f儲存資料之擷取。因此,若資料儲存裝置處於硬碟 8毁損之狀態’而快閃記憶體7未遭毁損,則其所儲存之 資料仍可自快閃記憶體7加以擷取。 田然,若硬碟8可加以移除,當其被移除時,可能造 快閃記憶體7中之資料被改變(如被覆寫),但硬碟8中所 儲存之資料未相對應地予以改變之情形。同樣地,若硬碟 8被一新的空硬碟所取代,顯然該新硬碟並未儲存有快閃 312XP/發明說明書(補件)/96-05/96105001 200809595 記憶體7中既有資料之複製資料。然而,無論上述情 =1。!係導因於使用者之操作’故使用者將得以察覺 “U己k、體7中所儲存之資料並未複製到硬碟8上 二無論上述情形中之何者,使用者將瞭解不可倚賴 。己k、體7所提供之備份資料。 、、 筲;著將參照圖2說明由上述資料儲存裝置所執行之、首 5亥凟异法之初始部分顯示於圖2(a)中。當供队: 源予資料儲存裝置,將執行一初始化程序,由資料儲2 置將硬碟8(步驟υ與快閃記憶體7(步驟2)初始化。子又 令==令白資料館存聚置接著於步驟3判斷該指 碟_資料之指令取賢料之指令或自硬 取資料,故-送達之續;二業:ΓΓ態為自硬碟8讀 對快閃記憶體7者,將視有一標記指示其係針 將視為係針對硬碟8之讀取指八 於步驟3若判定所接收之指令為自硬碟^ :’則於步驟4計算硬碟8中與該讀取指令所:=旨
Loglcal B1〇ck Address 址。於步驟5,批生丨丨级c 4〜貝聪位 送n碌雄:矛用控制線路與資料匯流排9傳 批計"寒使其將位於該實體位址之資料傳逆; 才工制态5,接著控制器5藉 k予 自硬碟8所接收之資料僂、…;丨面3經資料匯流排將 之貝枓傳达至外部主機。於+驟β . 試此程序是否完成。若未— 、少驟6,其测 择π皮、, 未凡成,其於步驟7中繼續上述值 4序’亚回到步驟6形成迴圈。當步驟 辻傳 肯定,本方法跳至步驟 、,,。果為 輝8亚4待新的指令。當接收到新 312ΧΡ/發明說明書(補件)/96_〇5/96ι〇5〇〇ι $ 200809595 的才曰令日守,本方法再次回到步驟3。 若於步驟3判定所接收之指令為 方:跳至圖2(b)中所示之演算法部分。於令,則本 之資料被儲存於一暫存哭巾 ;乂 * 9,指令中 與硬碟8。該寫入指令==寫入快閃記憶體7 寫入之資_分開健存,以供其m入指令扣除欲 吻10’計算快閃記憶體7中與=應:於何處。 中與該同-邏輯位帅對應之11 ’料算硬碟8 制器5利用控制線路傳送一指令至快二12’控 二者,指示其儲存資料。接著 ;己^體7與硬碟8 主機所接收之512位元組;=::13,控制器5將自 二者。於牛聊η 4 、、貝枓寫入快閃記憶體7與硬 ^於ν驟14,控制器5測試 ” 所指定之所有資料傳送至快閃=體=已=該寫入指令 則於步驟15中繼續該資料寫人程:日、:、8。若否, 14形成迴圈。一曰於步 4 方法回到步驟 該寫入程序完成:##料皆已傳送,則 部分。 本方法回到圖2⑷中所示之流程圖之 , '、訂*法之部分0於驗證步驟1 β 二制器二判斷該讀取指令是否含恤
視二者則讀取作業失敗,本方法回到圖2⑷。 視使用者之需求而定,嗜宓 、J α山馬了儲存於快閃記憶體7本身 312ΧΡ/發明說明書(補件)/96_〇5/961〇_ ι〇 200809595 之預留區域中。該密碼亦 若驗證步驟16結果為止—、機中。 算快閃記憶體7中之實體月(1於步驟17控制器5將計 用控制線路與資料匯止制=驟立18 ’控制器5利 資料匯流排將位於、A °己'丨思體7,使其利用 控制器5經由卿介面二之資料傳送予控制器5,接著 19,㈣Η«是二^該/料外送至主機。於步驟 a,^ 呵疋否所有請求之資料皆已傳送。若3 ,作業終止,本方法回到圖2(a)中所示之演算:之 心刀而形成迴圈。反之’則繼續資料傳送程 亚回到步驟19形成迴圈。 ) 於_詳述本發明之一具體例,然對習於此項技術之讀 而5 ’當瞭解本發明存在眾多相異之實施例而其不脫本 發明之範疇。 【圖式簡單說明】 圖1為本發明具體例之方塊略圖;以及 圖2由圖2(a)、2(b)與2(C)所組成,為圖1之具體例 所執行之資料儲存與擷取過程之流程圖。 【主要元件符號說明】 1 殼體 3 USB介面 5 控制器 7 快閃記憶體 8 硬碟 9 通訊路徑 312XP/發明說明書(補件)/96-05/96105001 n

Claims (1)

  1. 200809595 十、申請專利範圍: 1. 一種資料儲存襞置,包含: 一介面,用以與一主機進行通訊; 一硬碟; 一非揮發性固態記憶裝置;以及 器,其與該介面、該硬碟以及該非揮發 憶裝置進行通訊, 計為,於接收—寫人指令時,將相關於該 之貝料寫人該硬碟與該非揮發性固態記憶裝置 接收一讀取指令時,選擇性地自該硬碟或該非 揮X固悲圮fe裝置獲取資料’並經由 至該資料儲存裝置外。 竹貝計得达 專=圍第1項之資料儲存裝置,其中該控制 又计為,於接收一讀取指令時,依據該讀取指令判斷 该項取指令係針對該硬碟或該非揮發性固態記憶裝置。 3·如申請專利_第2項之轉储存裝置 非揮發性固態記憶裝置時,該控制器 符。 之女王貝況疋否與預先儲存之安全資訊相 4·如申請專利範圍第卜2或3項之資 盆 中該硬碟可自該資料儲存裝置移除。 八 5. 一種自申請專利範圍第1項之資料儲存裝置擷取資 料之方法,包含·· 廿衣置彌取貝 312ΧΡ/發明說明書(補件)/96_〇5/961〇5〇〇1 12 200809595 於該資料儲存裝 該主機傳送指令 發性固態記憶裝置 經由該介面將資料傳送 6 ·如申睛專利範圍第$ 含下列步驟: 置與一主機間建立電子通訊; 至該資料儲存裝置,使該主機自該非揮 獲取資料;以及 至該主機。 項之擷取資料之方法 進一步包 於該資料儲存裝置將 一相關於該資料儲存裝 7·如申請專利範圍第 全程序使用一密瑪。 資料傳送至該主機前,一主機執行 置之安全程序。 6項之擷取資料之方法,其中該安 312XP/發明說明書(補件)/96·05/96105001
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