WO2009129174A3 - Appareil et procédé d’identification de lecteurs de disque dont l’altération des données n’a pas été signalée - Google Patents

Appareil et procédé d’identification de lecteurs de disque dont l’altération des données n’a pas été signalée Download PDF

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Publication number
WO2009129174A3
WO2009129174A3 PCT/US2009/040349 US2009040349W WO2009129174A3 WO 2009129174 A3 WO2009129174 A3 WO 2009129174A3 US 2009040349 W US2009040349 W US 2009040349W WO 2009129174 A3 WO2009129174 A3 WO 2009129174A3
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WO
WIPO (PCT)
Prior art keywords
storage device
location
data
disk drives
redundant array
Prior art date
Application number
PCT/US2009/040349
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English (en)
Other versions
WO2009129174A2 (fr
Inventor
Jeffrey Lawrence Shellhamer
Original Assignee
Dot Hill Systems Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dot Hill Systems Corporation filed Critical Dot Hill Systems Corporation
Publication of WO2009129174A2 publication Critical patent/WO2009129174A2/fr
Publication of WO2009129174A3 publication Critical patent/WO2009129174A3/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error 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
    • G06F11/2053—Error 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
    • G06F11/2094—Redundant storage or storage space
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/10—Indexing scheme relating to G06F11/10
    • G06F2211/1002—Indexing scheme relating to G06F11/1076
    • G06F2211/1088—Scrubbing in RAID systems with parity

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

La présente invention concerne un contrôleur RAID utilisant un procédé d’identification d’un dispositif de stockage d’un réseau redondant de dispositifs de stockage renvoyant les données corrompues au contrôleur RAID. Le procédé comporte les étapes consistant à lire les données provenant d’un emplacement de chaque dispositif de stockage dans le réseau redondant une première fois et à détecter cette ou ces données corrompues et renvoyées de dispositif de stockage. En réponse à la détection des données corrompues, des étapes sont exécutées pour chaque dispositif de stockage dans le réseau redondant. Les étapes comportent la lecture des données provenant de l’emplacement du dispositif de stockage une seconde fois sans écriture sur l’emplacement entre les première et seconde lectures, la comparaison des données lues les première et seconde fois, et l’identification du dispositif de stockage comme étant défaillant si les données comparées présentent une erreur de comparaison. Enfin, le procédé comporte les étapes consistant à mettre à jour l’emplacement de chaque dispositif de stockage vers un nouvel emplacement et à répéter les étapes pour le nouvel emplacement.
PCT/US2009/040349 2008-04-15 2009-04-13 Appareil et procédé d’identification de lecteurs de disque dont l’altération des données n’a pas été signalée WO2009129174A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US4496608P 2008-04-15 2008-04-15
US61/044,966 2008-04-15
US12/183,245 US7788541B2 (en) 2008-04-15 2008-07-31 Apparatus and method for identifying disk drives with unreported data corruption
US12/183,245 2008-07-31

Publications (2)

Publication Number Publication Date
WO2009129174A2 WO2009129174A2 (fr) 2009-10-22
WO2009129174A3 true WO2009129174A3 (fr) 2010-05-27

Family

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Application Number Title Priority Date Filing Date
PCT/US2009/040349 WO2009129174A2 (fr) 2008-04-15 2009-04-13 Appareil et procédé d’identification de lecteurs de disque dont l’altération des données n’a pas été signalée

Country Status (2)

Country Link
US (1) US7788541B2 (fr)
WO (1) WO2009129174A2 (fr)

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Publication number Publication date
US20090259882A1 (en) 2009-10-15
WO2009129174A2 (fr) 2009-10-22
US7788541B2 (en) 2010-08-31

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