DE3750790T2 - Paritätsverteilung zum verbesserten Speicherzugriff. - Google Patents

Paritätsverteilung zum verbesserten Speicherzugriff.

Info

Publication number
DE3750790T2
DE3750790T2 DE3750790T DE3750790T DE3750790T2 DE 3750790 T2 DE3750790 T2 DE 3750790T2 DE 3750790 T DE3750790 T DE 3750790T DE 3750790 T DE3750790 T DE 3750790T DE 3750790 T2 DE3750790 T2 DE 3750790T2
Authority
DE
Germany
Prior art keywords
memory access
improved memory
parity distribution
parity
distribution
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE3750790T
Other languages
English (en)
Other versions
DE3750790D1 (de
Inventor
Brian Eldridge Clark
Terrence James Stewart
Francis Daniel Lawlor
George David Timms
Werner Eric Schmidt-Stumpf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25361257&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3750790(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE3750790D1 publication Critical patent/DE3750790D1/de
Application granted granted Critical
Publication of DE3750790T2 publication Critical patent/DE3750790T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
    • 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
    • G06F2211/104—Metadata, i.e. metadata associated with RAID systems with parity
DE3750790T 1986-06-12 1987-05-26 Paritätsverteilung zum verbesserten Speicherzugriff. Expired - Lifetime DE3750790T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06873249 US4761785B1 (en) 1986-06-12 1986-06-12 Parity spreading to enhance storage access

Publications (2)

Publication Number Publication Date
DE3750790D1 DE3750790D1 (de) 1995-01-12
DE3750790T2 true DE3750790T2 (de) 1995-05-24

Family

ID=25361257

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3750790T Expired - Lifetime DE3750790T2 (de) 1986-06-12 1987-05-26 Paritätsverteilung zum verbesserten Speicherzugriff.

Country Status (5)

Country Link
US (1) US4761785B1 (de)
EP (1) EP0249091B1 (de)
JP (1) JPS62293355A (de)
CA (1) CA1270333A (de)
DE (1) DE3750790T2 (de)

Families Citing this family (314)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4949326A (en) * 1986-12-10 1990-08-14 Matsushita Electric Industrial Co., Ltd. Optical information recording and reproducing system using optical disks having an error correction function
USRE34100E (en) * 1987-01-12 1992-10-13 Seagate Technology, Inc. Data error correction system
US4942579A (en) * 1987-06-02 1990-07-17 Cab-Tek, Inc. High-speed, high-capacity, fault-tolerant error-correcting storage system
US5257367A (en) * 1987-06-02 1993-10-26 Cab-Tek, Inc. Data storage system with asynchronous host operating system communication link
US4870643A (en) * 1987-11-06 1989-09-26 Micropolis Corporation Parallel drive array storage system
US4993030A (en) * 1988-04-22 1991-02-12 Amdahl Corporation File system for a plurality of storage classes
US4914656A (en) * 1988-06-28 1990-04-03 Storage Technology Corporation Disk drive memory
US4989206A (en) * 1988-06-28 1991-01-29 Storage Technology Corporation Disk drive memory
US5077736A (en) * 1988-06-28 1991-12-31 Storage Technology Corporation Disk drive memory
US5283791A (en) * 1988-08-02 1994-02-01 Cray Research Systems, Inc. Error recovery method and apparatus for high performance disk drives
US5218689A (en) * 1988-08-16 1993-06-08 Cray Research, Inc. Single disk emulation interface for an array of asynchronously operating disk drives
JP2718708B2 (ja) * 1988-08-26 1998-02-25 株式会社日立製作所 記憶制御システムの制御方法および記憶制御システムならびに記憶制御装置
US5148432A (en) * 1988-11-14 1992-09-15 Array Technology Corporation Arrayed disk drive system and method
US5007053A (en) * 1988-11-30 1991-04-09 International Business Machines Corporation Method and apparatus for checksum address generation in a fail-safe modular memory
US5008886A (en) * 1989-01-27 1991-04-16 Digital Equipment Corporation Read-modify-write operation
US5185746A (en) * 1989-04-14 1993-02-09 Mitsubishi Denki Kabushiki Kaisha Optical recording system with error correction and data recording distributed across multiple disk drives
US5146574A (en) * 1989-06-27 1992-09-08 Sf2 Corporation Method and circuit for programmable selecting a variable sequence of element using write-back
US5072378A (en) * 1989-12-18 1991-12-10 Storage Technology Corporation Direct access storage device with independently stored parity
US5402428A (en) * 1989-12-25 1995-03-28 Hitachi, Ltd. Array disk subsystem
JPH03216751A (ja) * 1990-01-05 1991-09-24 Internatl Business Mach Corp <Ibm> フアイル転送方法
US5315708A (en) * 1990-02-28 1994-05-24 Micro Technology, Inc. Method and apparatus for transferring data through a staging memory
US5134619A (en) * 1990-04-06 1992-07-28 Sf2 Corporation Failure-tolerant mass storage system
US5140592A (en) * 1990-03-02 1992-08-18 Sf2 Corporation Disk array system
US5233618A (en) * 1990-03-02 1993-08-03 Micro Technology, Inc. Data correcting applicable to redundant arrays of independent disks
US5195100A (en) * 1990-03-02 1993-03-16 Micro Technology, Inc. Non-volatile memory storage of write operation identifier in data sotrage device
US5212785A (en) * 1990-04-06 1993-05-18 Micro Technology, Inc. Apparatus and method for controlling data flow between a computer and memory devices
US5388243A (en) * 1990-03-09 1995-02-07 Mti Technology Corporation Multi-sort mass storage device announcing its active paths without deactivating its ports in a network architecture
US5129082A (en) * 1990-03-27 1992-07-07 Sun Microsystems, Inc. Method and apparatus for searching database component files to retrieve information from modified files
US5325497A (en) * 1990-03-29 1994-06-28 Micro Technology, Inc. Method and apparatus for assigning signatures to identify members of a set of mass of storage devices
US5202856A (en) * 1990-04-05 1993-04-13 Micro Technology, Inc. Method and apparatus for simultaneous, interleaved access of multiple memories by multiple ports
US5956524A (en) * 1990-04-06 1999-09-21 Micro Technology Inc. System and method for dynamic alignment of associated portions of a code word from a plurality of asynchronous sources
US5233692A (en) * 1990-04-06 1993-08-03 Micro Technology, Inc. Enhanced interface permitting multiple-byte parallel transfers of control information and data on a small computer system interface (SCSI) communication bus and a mass storage system incorporating the enhanced interface
US5214778A (en) * 1990-04-06 1993-05-25 Micro Technology, Inc. Resource management in a multiple resource system
US5414818A (en) * 1990-04-06 1995-05-09 Mti Technology Corporation Method and apparatus for controlling reselection of a bus by overriding a prioritization protocol
US5130992A (en) * 1990-04-16 1992-07-14 International Business Machines Corporaiton File-based redundant parity protection in a parallel computing system
US5263145A (en) * 1990-05-24 1993-11-16 International Business Machines Corporation Method and means for accessing DASD arrays with tuned data transfer rate and concurrency
JPH0731582B2 (ja) * 1990-06-21 1995-04-10 インターナショナル・ビジネス・マシーンズ・コーポレイション パリティ保護データを回復するための方法および装置
US5220569A (en) * 1990-07-09 1993-06-15 Seagate Technology, Inc. Disk array with error type indication and selection of error correction method
US5265098A (en) * 1990-08-03 1993-11-23 International Business Machines Corporation Method and means for managing DASD array accesses when operating in degraded mode
US5375128A (en) * 1990-10-18 1994-12-20 Ibm Corporation (International Business Machines Corporation) Fast updating of DASD arrays using selective shadow writing of parity and data blocks, tracks, or cylinders
EP0481735A3 (en) * 1990-10-19 1993-01-13 Array Technology Corporation Address protection circuit
US5208813A (en) * 1990-10-23 1993-05-04 Array Technology Corporation On-line reconstruction of a failed redundant array system
AU8683991A (en) * 1990-11-09 1992-05-14 Array Technology Corporation Logical partitioning of a redundant array storage system
US5235601A (en) * 1990-12-21 1993-08-10 Array Technology Corporation On-line restoration of redundancy information in a redundant array system
US5274799A (en) * 1991-01-04 1993-12-28 Array Technology Corporation Storage device array architecture with copyback cache
US6874101B2 (en) * 1991-01-31 2005-03-29 Hitachi, Ltd. Storage unit subsystem
JP3409859B2 (ja) 1991-01-31 2003-05-26 株式会社日立製作所 制御装置の制御方法
US5239640A (en) * 1991-02-01 1993-08-24 International Business Machines Corporation Data storage system and method including data and checksum write staging storage
US5303244A (en) * 1991-03-01 1994-04-12 Teradata Fault tolerant disk drive matrix
US5257362A (en) * 1991-03-08 1993-10-26 International Business Machines Corporation Method and means for ensuring single pass small read/write access to variable length records stored on selected DASDs in a DASD array
US5345565A (en) * 1991-03-13 1994-09-06 Ncr Corporation Multiple configuration data path architecture for a disk array controller
US5506979A (en) * 1991-04-02 1996-04-09 International Business Machines Corporation Method and means for execution of commands accessing variable length records stored on fixed block formatted DASDS of an N+2 DASD synchronous array
JP2743606B2 (ja) * 1991-04-11 1998-04-22 三菱電機株式会社 アレイ型記録装置
JP3187525B2 (ja) * 1991-05-17 2001-07-11 ヒュンダイ エレクトロニクス アメリカ バス接続装置
US5278838A (en) * 1991-06-18 1994-01-11 Ibm Corp. Recovery from errors in a redundant array of disk drives
US5333143A (en) * 1991-08-29 1994-07-26 International Business Machines Corporation Method and means for b-adjacent coding and rebuilding data from up to two unavailable DASDS in a DASD array
US5636358A (en) * 1991-09-27 1997-06-03 Emc Corporation Method and apparatus for transferring data in a storage device including a dual-port buffer
US5499337A (en) * 1991-09-27 1996-03-12 Emc Corporation Storage device array architecture with solid-state redundancy unit
US5237658A (en) * 1991-10-01 1993-08-17 Tandem Computers Incorporated Linear and orthogonal expansion of array storage in multiprocessor computing systems
US5379417A (en) * 1991-11-25 1995-01-03 Tandem Computers Incorporated System and method for ensuring write data integrity in a redundant array data storage system
US5333305A (en) * 1991-12-27 1994-07-26 Compaq Computer Corporation Method for improving partial stripe write performance in disk array subsystems
JPH06511099A (ja) * 1991-12-27 1994-12-08 コンパック・コンピュータ・コーポレイション 不均一ストライプサイズマッピングスキームを用いたディスク配列操作を実行する方法
EP0551009B1 (de) * 1992-01-08 2001-06-13 Emc Corporation Verfahren zur Synchronisierung von reservierten Bereichen in einer redundanten Speicheranordnung
US5341381A (en) * 1992-01-21 1994-08-23 Tandem Computers, Incorporated Redundant array parity caching system
US5305326A (en) * 1992-03-06 1994-04-19 Data General Corporation High availability disk arrays
EP0559488B1 (de) * 1992-03-06 1998-08-19 Data General Corporation Datenbehandlung in einem System mit einem Prozessor zur Steuerung des Zugangs zu einer Mehrzahl von Datenspeicherplatten
US5371743A (en) * 1992-03-06 1994-12-06 Data General Corporation On-line module replacement in a multiple module data processing system
AU653670B2 (en) * 1992-03-10 1994-10-06 Data General Corporation Improvements for high availability disk arrays
US5469566A (en) * 1992-03-12 1995-11-21 Emc Corporation Flexible parity generation circuit for intermittently generating a parity for a plurality of data channels in a redundant array of storage units
WO1993018456A1 (en) * 1992-03-13 1993-09-16 Emc Corporation Multiple controller sharing in a redundant storage array
US5740465A (en) * 1992-04-08 1998-04-14 Hitachi, Ltd. Array disk controller for grouping host commands into a single virtual host command
US5418921A (en) * 1992-05-05 1995-05-23 International Business Machines Corporation Method and means for fast writing data to LRU cached based DASD arrays under diverse fault tolerant modes
US5708668A (en) * 1992-05-06 1998-01-13 International Business Machines Corporation Method and apparatus for operating an array of storage devices
JP2888401B2 (ja) * 1992-08-03 1999-05-10 インターナショナル・ビジネス・マシーンズ・コーポレイション 冗長ディスクドライブアレイに対する同期方法
US6640235B1 (en) 1992-08-20 2003-10-28 Intel Corporation Expandable mass disk drive storage system
US5913926A (en) * 1992-08-20 1999-06-22 Farrington Investments Ltd. Expandable modular data storage system having parity storage capability
JP3183719B2 (ja) * 1992-08-26 2001-07-09 三菱電機株式会社 アレイ型記録装置
JP3181398B2 (ja) * 1992-10-06 2001-07-03 三菱電機株式会社 アレイ型記録装置
EP0600137A1 (de) * 1992-11-30 1994-06-08 International Business Machines Corporation Verfahren und Einrichtung zur Korrektur von Fehlern in einem Speicher
US5579474A (en) * 1992-12-28 1996-11-26 Hitachi, Ltd. Disk array system and its control method
JP3176157B2 (ja) * 1992-12-28 2001-06-11 株式会社日立製作所 ディスクアレイ装置及びそのデータ更新方法
JP2743756B2 (ja) * 1993-02-03 1998-04-22 日本電気株式会社 半導体ディスク装置
JP3258117B2 (ja) * 1993-03-08 2002-02-18 株式会社日立製作所 記憶装置サブシステム
US5649162A (en) * 1993-05-24 1997-07-15 Micron Electronics, Inc. Local bus interface
US5867640A (en) * 1993-06-01 1999-02-02 Mti Technology Corp. Apparatus and method for improving write-throughput in a redundant array of mass storage devices
JP3751018B2 (ja) * 1993-06-03 2006-03-01 ネットワーク・アプライアンス・インコーポレイテッド ライトエニウエアファイルシステムレイアウト
US5963962A (en) * 1995-05-31 1999-10-05 Network Appliance, Inc. Write anywhere file-system layout
US6604118B2 (en) 1998-07-31 2003-08-05 Network Appliance, Inc. File system image transfer
US7174352B2 (en) 1993-06-03 2007-02-06 Network Appliance, Inc. File system image transfer
JP3862274B2 (ja) * 1993-06-03 2006-12-27 ネットワーク・アプライアンス・インコーポレイテッド Ｒａｉｄディスクサブシステムと統合されたファイルシステムのファイル割り当て方法
US6138126A (en) 1995-05-31 2000-10-24 Network Appliance, Inc. Method for allocating files in a file system integrated with a raid disk sub-system
EP1031928B1 (de) 1993-06-04 2005-05-18 Network Appliance, Inc. Verfahren zur Paritätsdarstellung in einem Raid-Untersystem unter Verwendung eines nichtflüchtigen Speichers
US5555389A (en) * 1993-07-07 1996-09-10 Hitachi, Ltd. Storage controller for performing dump processing
US5987622A (en) * 1993-12-10 1999-11-16 Tm Patents, Lp Parallel computer system including parallel storage subsystem including facility for correction of data in the event of failure of a storage device in parallel storage subsystem
US5396620A (en) * 1993-12-21 1995-03-07 Storage Technology Corporation Method for writing specific values last into data storage groups containing redundancy
US20030088611A1 (en) * 1994-01-19 2003-05-08 Mti Technology Corporation Systems and methods for dynamic alignment of associated portions of a code word from a plurality of asynchronous sources
US5911150A (en) * 1994-01-25 1999-06-08 Data General Corporation Data storage tape back-up for data processing systems using a single driver interface unit
US5446855A (en) * 1994-02-07 1995-08-29 Buslogic, Inc. System and method for disk array data transfer
US5537567A (en) * 1994-03-14 1996-07-16 International Business Machines Corporation Parity block configuration in an array of storage devices
JP2981711B2 (ja) * 1994-06-16 1999-11-22 日本アイ・ビー・エム株式会社 ディスク記憶装置
US5467361A (en) * 1994-06-20 1995-11-14 International Business Machines Corporation Method and system for separate data and media maintenance within direct access storage devices
US5657439A (en) * 1994-08-23 1997-08-12 International Business Machines Corporation Distributed subsystem sparing
US5412668A (en) * 1994-09-22 1995-05-02 International Business Machines Corporation Parity striping feature for optical disks
US5623595A (en) * 1994-09-26 1997-04-22 Oracle Corporation Method and apparatus for transparent, real time reconstruction of corrupted data in a redundant array data storage system
GB2293912A (en) * 1994-10-05 1996-04-10 Ibm Disk storage device for disk array
US5497457A (en) * 1994-10-17 1996-03-05 International Business Machines Corporation Redundant arrays of independent libraries of dismountable media with parity logging
US5488701A (en) * 1994-11-17 1996-01-30 International Business Machines Corporation In log sparing for log structured arrays
US5574882A (en) * 1995-03-03 1996-11-12 International Business Machines Corporation System and method for identifying inconsistent parity in an array of storage
US5848230A (en) 1995-05-25 1998-12-08 Tandem Computers Incorporated Continuously available computer memory systems
EP0831484A1 (de) * 1995-06-08 1998-03-25 Ibm Japan Ltd. Datenrestrukturierungsverfahren und datenspeicherungssystem
US5875456A (en) * 1995-08-17 1999-02-23 Nstor Corporation Storage device array and methods for striping and unstriping data and for adding and removing disks online to/from a raid storage array
US5657468A (en) * 1995-08-17 1997-08-12 Ambex Technologies, Inc. Method and apparatus for improving performance in a reduntant array of independent disks
WO1997011426A1 (en) 1995-09-18 1997-03-27 Cyberstorage Systems, Inc. Universal storage management system
US5799200A (en) * 1995-09-28 1998-08-25 Emc Corporation Power failure responsive apparatus and method having a shadow dram, a flash ROM, an auxiliary battery, and a controller
US5941994A (en) * 1995-12-22 1999-08-24 Lsi Logic Corporation Technique for sharing hot spare drives among multiple subsystems
US5838892A (en) * 1995-12-29 1998-11-17 Emc Corporation Method and apparatus for calculating an error detecting code block in a disk drive controller
US6055577A (en) * 1996-05-06 2000-04-25 Oracle Corporation System for granting bandwidth for real time processes and assigning bandwidth for non-real time processes while being forced to periodically re-arbitrate for new assigned bandwidth
US5790774A (en) * 1996-05-21 1998-08-04 Storage Computer Corporation Data storage system with dedicated allocation of parity storage and parity reads and writes only on operations requiring parity information
US5856989A (en) * 1996-08-13 1999-01-05 Hewlett-Packard Company Method and apparatus for parity block generation
US6041423A (en) * 1996-11-08 2000-03-21 Oracle Corporation Method and apparatus for using undo/redo logging to perform asynchronous updates of parity and data pages in a redundant array data storage environment
US6161165A (en) * 1996-11-14 2000-12-12 Emc Corporation High performance data path with XOR on the fly
KR100223186B1 (ko) * 1997-01-29 1999-10-15 윤종용 Dvd-ram에서 고속의 데이타기록방법
JPH10254642A (ja) * 1997-03-14 1998-09-25 Hitachi Ltd 記憶装置システム
JP4499193B2 (ja) * 1997-04-07 2010-07-07 ソニー株式会社 記録再生装置及び記録再生方法
US5974503A (en) * 1997-04-25 1999-10-26 Emc Corporation Storage and access of continuous media files indexed as lists of raid stripe sets associated with file names
US5968182A (en) * 1997-05-12 1999-10-19 International Business Machines Corporation Method and means for utilizing device long busy response for resolving detected anomalies at the lowest level in a hierarchical, demand/response storage management subsystem
US6016552A (en) * 1997-06-06 2000-01-18 The Chinese University Of Hong Kong Object striping focusing on data object
US5991894A (en) * 1997-06-06 1999-11-23 The Chinese University Of Hong Kong Progressive redundancy transmission
US6112277A (en) * 1997-09-25 2000-08-29 International Business Machines Corporation Method and means for reducing device contention by random accessing and partial track staging of records according to a first DASD format but device mapped according to a second DASD format
GB2345366B (en) 1997-10-08 2003-02-19 Seagate Technology Hybrid data storage and reconstruction system and method for a data storage device
US6112255A (en) * 1997-11-13 2000-08-29 International Business Machines Corporation Method and means for managing disk drive level logic and buffer modified access paths for enhanced raid array data rebuild and write update operations
US6101624A (en) * 1998-01-21 2000-08-08 International Business Machines Corporation Method and apparatus for detecting and correcting anomalies in field-programmable gate arrays using CRCs for anomaly detection and parity for anomaly correction
US6457130B2 (en) 1998-03-03 2002-09-24 Network Appliance, Inc. File access control in a multi-protocol file server
US6317844B1 (en) 1998-03-10 2001-11-13 Network Appliance, Inc. File server storage arrangement
DE19811035A1 (de) * 1998-03-13 1999-09-16 Grau Software Gmbh Verfahren zum Speichern von Daten
US6219751B1 (en) 1998-04-28 2001-04-17 International Business Machines Corporation Device level coordination of access operations among multiple raid control units
US6704837B2 (en) 1998-06-29 2004-03-09 International Business Machines Corporation Method and apparatus for increasing RAID write performance by maintaining a full track write counter
US6427212B1 (en) 1998-11-13 2002-07-30 Tricord Systems, Inc. Data fault tolerance software apparatus and method
US6343984B1 (en) 1998-11-30 2002-02-05 Network Appliance, Inc. Laminar flow duct cooling system
US6449731B1 (en) 1999-03-03 2002-09-10 Tricord Systems, Inc. Self-healing computer system storage
US6725392B1 (en) 1999-03-03 2004-04-20 Adaptec, Inc. Controller fault recovery system for a distributed file system
US6530036B1 (en) 1999-08-17 2003-03-04 Tricord Systems, Inc. Self-healing computer system storage
US6970450B1 (en) * 1999-10-29 2005-11-29 Array Telecom Corporation System, method and computer program product for point-to-point bandwidth conservation in an IP network
JP2001166887A (ja) * 1999-12-08 2001-06-22 Sony Corp データ記録再生装置及びデータ記録再生方法
US7062648B2 (en) * 2000-02-18 2006-06-13 Avamar Technologies, Inc. System and method for redundant array network storage
US6704730B2 (en) 2000-02-18 2004-03-09 Avamar Technologies, Inc. Hash file system and method for use in a commonality factoring system
US7194504B2 (en) * 2000-02-18 2007-03-20 Avamar Technologies, Inc. System and method for representing and maintaining redundant data sets utilizing DNA transmission and transcription techniques
US6826711B2 (en) 2000-02-18 2004-11-30 Avamar Technologies, Inc. System and method for data protection with multidimensional parity
US7509420B2 (en) 2000-02-18 2009-03-24 Emc Corporation System and method for intelligent, globally distributed network storage
US6820088B1 (en) * 2000-04-10 2004-11-16 Research In Motion Limited System and method for synchronizing data records between multiple databases
US6728922B1 (en) 2000-08-18 2004-04-27 Network Appliance, Inc. Dynamic data space
US6636879B1 (en) 2000-08-18 2003-10-21 Network Appliance, Inc. Space allocation in a write anywhere file system
US7072916B1 (en) 2000-08-18 2006-07-04 Network Appliance, Inc. Instant snapshot
US6865650B1 (en) 2000-09-29 2005-03-08 Emc Corporation System and method for hierarchical data storage
US6507890B1 (en) 2000-09-29 2003-01-14 Emc Corporation System and method for expanding a log structure in a disk array
US6611852B1 (en) 2000-09-29 2003-08-26 Emc Corporation System and method for cleaning a log structure
US6654912B1 (en) * 2000-10-04 2003-11-25 Network Appliance, Inc. Recovery of file system data in file servers mirrored file system volumes
US6952797B1 (en) 2000-10-25 2005-10-04 Andy Kahn Block-appended checksums
US6810398B2 (en) * 2000-11-06 2004-10-26 Avamar Technologies, Inc. System and method for unorchestrated determination of data sequences using sticky byte factoring to determine breakpoints in digital sequences
US6754768B2 (en) 2001-04-26 2004-06-22 International Business Machines Corporation Library of hard disk drives with transparent emulating interface
US6512962B2 (en) 2001-04-26 2003-01-28 International Business Machines Corporation Cabling picker in a library of stationary memory devices
US6941260B2 (en) * 2001-04-26 2005-09-06 International Business Machines Corporation Method and apparatus for emulating a fiber channel port
US6650601B1 (en) 2001-04-26 2003-11-18 International Business Machines Corporation Hard disk drive picking device and method
US6600703B1 (en) 2001-04-26 2003-07-29 International Business Machines Corporation Magazine for a plurality of removable hard disk drives
US6871263B2 (en) * 2001-08-28 2005-03-22 Sedna Patent Services, Llc Method and apparatus for striping data onto a plurality of disk drives
US6851082B1 (en) 2001-11-13 2005-02-01 Network Appliance, Inc. Concentrated parity technique for handling double failures and enabling storage of more than one parity block per stripe on a storage device of a storage array
US7346831B1 (en) 2001-11-13 2008-03-18 Network Appliance, Inc. Parity assignment technique for parity declustering in a parity array of a storage system
US6978283B1 (en) * 2001-12-21 2005-12-20 Network Appliance, Inc. File system defragmentation technique via write allocation
US6993701B2 (en) 2001-12-28 2006-01-31 Network Appliance, Inc. Row-diagonal parity technique for enabling efficient recovery from double failures in a storage array
US8402346B2 (en) * 2001-12-28 2013-03-19 Netapp, Inc. N-way parity technique for enabling recovery from up to N storage device failures
US7613984B2 (en) * 2001-12-28 2009-11-03 Netapp, Inc. System and method for symmetric triple parity for failing storage devices
US7640484B2 (en) 2001-12-28 2009-12-29 Netapp, Inc. Triple parity technique for enabling efficient recovery from triple failures in a storage array
US7073115B2 (en) * 2001-12-28 2006-07-04 Network Appliance, Inc. Correcting multiple block data loss in a storage array using a combination of a single diagonal parity group and multiple row parity groups
US7007220B2 (en) * 2002-03-01 2006-02-28 Broadlogic Network Technologies, Inc. Error correction coding across multiple channels in content distribution systems
US7080278B1 (en) 2002-03-08 2006-07-18 Network Appliance, Inc. Technique for correcting multiple storage device failures in a storage array
US6993539B2 (en) 2002-03-19 2006-01-31 Network Appliance, Inc. System and method for determining changes in two snapshots and for transmitting changes to destination snapshot
US7437727B2 (en) * 2002-03-21 2008-10-14 Network Appliance, Inc. Method and apparatus for runtime resource deadlock avoidance in a raid system
US7200715B2 (en) * 2002-03-21 2007-04-03 Network Appliance, Inc. Method for writing contiguous arrays of stripes in a RAID storage system using mapped block writes
US7539991B2 (en) * 2002-03-21 2009-05-26 Netapp, Inc. Method and apparatus for decomposing I/O tasks in a raid system
US7254813B2 (en) * 2002-03-21 2007-08-07 Network Appliance, Inc. Method and apparatus for resource allocation in a raid system
US6976146B1 (en) 2002-05-21 2005-12-13 Network Appliance, Inc. System and method for emulating block appended checksums on storage devices by sector stealing
US7024586B2 (en) * 2002-06-24 2006-04-04 Network Appliance, Inc. Using file system information in raid data reconstruction and migration
US7873700B2 (en) * 2002-08-09 2011-01-18 Netapp, Inc. Multi-protocol storage appliance that provides integrated support for file and block access protocols
US7340486B1 (en) * 2002-10-10 2008-03-04 Network Appliance, Inc. System and method for file system snapshot of a virtual logical disk
US7085953B1 (en) 2002-11-01 2006-08-01 International Business Machines Corporation Method and means for tolerating multiple dependent or arbitrary double disk failures in a disk array
US7809693B2 (en) * 2003-02-10 2010-10-05 Netapp, Inc. System and method for restoring data on demand for instant volume restoration
US7185144B2 (en) * 2003-11-24 2007-02-27 Network Appliance, Inc. Semi-static distribution technique
US7664913B2 (en) * 2003-03-21 2010-02-16 Netapp, Inc. Query-based spares management technique
US7111147B1 (en) * 2003-03-21 2006-09-19 Network Appliance, Inc. Location-independent RAID group virtual block management
US7424637B1 (en) 2003-03-21 2008-09-09 Networks Appliance, Inc. Technique for managing addition of disks to a volume of a storage system
US7328364B1 (en) 2003-03-21 2008-02-05 Network Appliance, Inc. Technique for coherent suspension of I/O operations in a RAID subsystem
US7143235B1 (en) 2003-03-21 2006-11-28 Network Appliance, Inc. Proposed configuration management behaviors in a raid subsystem
US7171606B2 (en) * 2003-03-25 2007-01-30 Wegener Communications, Inc. Software download control system, apparatus and method
US7275179B1 (en) 2003-04-24 2007-09-25 Network Appliance, Inc. System and method for reducing unrecoverable media errors in a disk subsystem
US7437523B1 (en) 2003-04-25 2008-10-14 Network Appliance, Inc. System and method for on-the-fly file folding in a replicated storage system
US7174476B2 (en) * 2003-04-28 2007-02-06 Lsi Logic Corporation Methods and structure for improved fault tolerance during initialization of a RAID logical unit
US20040250028A1 (en) * 2003-06-09 2004-12-09 Daniels Rodger D. Method and apparatus for data version checking
US7206411B2 (en) 2003-06-25 2007-04-17 Wegener Communications, Inc. Rapid decryption of data by key synchronization and indexing
US7146461B1 (en) 2003-07-01 2006-12-05 Veritas Operating Corporation Automated recovery from data corruption of data volumes in parity RAID storage systems
US7047379B2 (en) * 2003-07-11 2006-05-16 International Business Machines Corporation Autonomic link optimization through elimination of unnecessary transfers
US7328305B2 (en) 2003-11-03 2008-02-05 Network Appliance, Inc. Dynamic parity distribution technique
US7401093B1 (en) 2003-11-10 2008-07-15 Network Appliance, Inc. System and method for managing file data during consistency points
US7783611B1 (en) 2003-11-10 2010-08-24 Netapp, Inc. System and method for managing file metadata during consistency points
US7721062B1 (en) 2003-11-10 2010-05-18 Netapp, Inc. Method for detecting leaked buffer writes across file system consistency points
US7428691B2 (en) * 2003-11-12 2008-09-23 Norman Ken Ouchi Data recovery from multiple failed data blocks and storage units
US7263629B2 (en) * 2003-11-24 2007-08-28 Network Appliance, Inc. Uniform and symmetric double failure correcting technique for protecting against two disk failures in a disk array
US7647451B1 (en) 2003-11-24 2010-01-12 Netapp, Inc. Data placement technique for striping data containers across volumes of a storage system cluster
US7366837B2 (en) * 2003-11-24 2008-04-29 Network Appliance, Inc. Data placement technique for striping data containers across volumes of a storage system cluster
EP1695220B1 (de) 2003-12-19 2013-02-20 Network Appliance, Inc. System und verfahren zur unterstützung der asynchronen dataduplikation mit sehr kurzen aktualisierungsintervallen
US7478101B1 (en) 2003-12-23 2009-01-13 Networks Appliance, Inc. System-independent data format in a mirrored storage system environment and method for using the same
US7167359B2 (en) * 2003-12-29 2007-01-23 Sherwood Information Partners, Inc. System and method for mass storage using multiple-hard-disk-drive enclosure
US8041888B2 (en) * 2004-02-05 2011-10-18 Netapp, Inc. System and method for LUN cloning
US7334095B1 (en) 2004-04-30 2008-02-19 Network Appliance, Inc. Writable clone of read-only volume
US7409494B2 (en) 2004-04-30 2008-08-05 Network Appliance, Inc. Extension of write anywhere file system layout
US7430571B2 (en) 2004-04-30 2008-09-30 Network Appliance, Inc. Extension of write anywhere file layout write allocation
US7409511B2 (en) * 2004-04-30 2008-08-05 Network Appliance, Inc. Cloning technique for efficiently creating a copy of a volume in a storage system
US7334094B2 (en) * 2004-04-30 2008-02-19 Network Appliance, Inc. Online clone volume splitting technique
US7519628B1 (en) 2004-06-01 2009-04-14 Network Appliance, Inc. Technique for accelerating log replay with partial cache flush
US7509329B1 (en) 2004-06-01 2009-03-24 Network Appliance, Inc. Technique for accelerating file deletion by preloading indirect blocks
US8726129B1 (en) * 2004-07-23 2014-05-13 Hewlett-Packard Development Company, L.P. Methods of writing and recovering erasure coded data
US7194595B1 (en) 2004-09-27 2007-03-20 Network Appliance, Inc. Technique for translating a hybrid virtual volume file system into a pure virtual file system data stream
US7243207B1 (en) 2004-09-27 2007-07-10 Network Appliance, Inc. Technique for translating a pure virtual file system data stream into a hybrid virtual volume
US20060075281A1 (en) * 2004-09-27 2006-04-06 Kimmel Jeffrey S Use of application-level context information to detect corrupted data in a storage system
US7260678B1 (en) 2004-10-13 2007-08-21 Network Appliance, Inc. System and method for determining disk ownership model
US7603532B2 (en) * 2004-10-15 2009-10-13 Netapp, Inc. System and method for reclaiming unused space from a thinly provisioned data container
US7730277B1 (en) 2004-10-25 2010-06-01 Netapp, Inc. System and method for using pvbn placeholders in a flexible volume of a storage system
US7636744B1 (en) 2004-11-17 2009-12-22 Netapp, Inc. System and method for flexible space reservations in a file system supporting persistent consistency point images
US7523286B2 (en) * 2004-11-19 2009-04-21 Network Appliance, Inc. System and method for real-time balancing of user workload across multiple storage systems with shared back end storage
US7707165B1 (en) 2004-12-09 2010-04-27 Netapp, Inc. System and method for managing data versions in a file system
US7506111B1 (en) 2004-12-20 2009-03-17 Network Appliance, Inc. System and method for determining a number of overwitten blocks between data containers
US7424497B1 (en) 2005-01-27 2008-09-09 Network Appliance, Inc. Technique for accelerating the creation of a point in time prepresentation of a virtual file system
US8019842B1 (en) 2005-01-27 2011-09-13 Netapp, Inc. System and method for distributing enclosure services data to coordinate shared storage
US8180855B2 (en) * 2005-01-27 2012-05-15 Netapp, Inc. Coordinated shared storage architecture
US7398460B1 (en) 2005-01-31 2008-07-08 Network Appliance, Inc. Technique for efficiently organizing and distributing parity blocks among storage devices of a storage array
US7574464B2 (en) * 2005-02-14 2009-08-11 Netapp, Inc. System and method for enabling a storage system to support multiple volume formats simultaneously
US7757056B1 (en) 2005-03-16 2010-07-13 Netapp, Inc. System and method for efficiently calculating storage required to split a clone volume
US8055702B2 (en) * 2005-04-25 2011-11-08 Netapp, Inc. System and method for caching network file systems
US7689609B2 (en) * 2005-04-25 2010-03-30 Netapp, Inc. Architecture for supporting sparse volumes
US7617370B2 (en) 2005-04-29 2009-11-10 Netapp, Inc. Data allocation within a storage system architecture
US7468117B2 (en) * 2005-04-29 2008-12-23 Kimberly-Clark Worldwide, Inc. Method of transferring a wet tissue web to a three-dimensional fabric
US7401253B2 (en) * 2005-05-09 2008-07-15 International Business Machines Corporation Convolution-encoded data storage on a redundant array of independent devices
US7370261B2 (en) * 2005-05-09 2008-05-06 International Business Machines Corporation Convolution-encoded raid with trellis-decode-rebuild
US7634760B1 (en) 2005-05-23 2009-12-15 Netapp, Inc. System and method for remote execution of a debugging utility using a remote management module
US7739318B2 (en) 2005-06-20 2010-06-15 Netapp, Inc. System and method for maintaining mappings from data containers to their parent directories
US7653682B2 (en) * 2005-07-22 2010-01-26 Netapp, Inc. Client failure fencing mechanism for fencing network file system data in a host-cluster environment
US7516285B1 (en) 2005-07-22 2009-04-07 Network Appliance, Inc. Server side API for fencing cluster hosts via export access rights
US7650366B1 (en) 2005-09-09 2010-01-19 Netapp, Inc. System and method for generating a crash consistent persistent consistency point image set
US20070088917A1 (en) * 2005-10-14 2007-04-19 Ranaweera Samantha L System and method for creating and maintaining a logical serial attached SCSI communication channel among a plurality of storage systems
US7467276B1 (en) 2005-10-25 2008-12-16 Network Appliance, Inc. System and method for automatic root volume creation
US7376796B2 (en) 2005-11-01 2008-05-20 Network Appliance, Inc. Lightweight coherency control protocol for clustered storage system
US7653829B2 (en) * 2005-12-08 2010-01-26 Electronics And Telecommunications Research Institute Method of data placement and control in block-divided distributed parity disk array
US7693864B1 (en) 2006-01-03 2010-04-06 Netapp, Inc. System and method for quickly determining changed metadata using persistent consistency point image differencing
US7734603B1 (en) 2006-01-26 2010-06-08 Netapp, Inc. Content addressable storage array element
US8560503B1 (en) 2006-01-26 2013-10-15 Netapp, Inc. Content addressable storage system
US8285817B1 (en) 2006-03-20 2012-10-09 Netapp, Inc. Migration engine for use in a logical namespace of a storage system environment
US7590660B1 (en) 2006-03-21 2009-09-15 Network Appliance, Inc. Method and system for efficient database cloning
US8260831B2 (en) * 2006-03-31 2012-09-04 Netapp, Inc. System and method for implementing a flexible storage manager with threshold control
US20070233868A1 (en) * 2006-03-31 2007-10-04 Tyrrell John C System and method for intelligent provisioning of storage across a plurality of storage systems
US7769723B2 (en) * 2006-04-28 2010-08-03 Netapp, Inc. System and method for providing continuous data protection
WO2007131190A2 (en) 2006-05-05 2007-11-15 Hybir Inc. Group based complete and incremental computer file backup system, process and apparatus
US7822921B2 (en) 2006-10-31 2010-10-26 Netapp, Inc. System and method for optimizing write operations in storage systems
US7613947B1 (en) 2006-11-30 2009-11-03 Netapp, Inc. System and method for storage takeover
US7647526B1 (en) 2006-12-06 2010-01-12 Netapp, Inc. Reducing reconstruct input/output operations in storage systems
US8495292B2 (en) 2006-12-06 2013-07-23 Fusion-Io, Inc. Apparatus, system, and method for an in-server storage area network
US8301673B2 (en) * 2006-12-29 2012-10-30 Netapp, Inc. System and method for performing distributed consistency verification of a clustered file system
US8219821B2 (en) 2007-03-27 2012-07-10 Netapp, Inc. System and method for signature based data container recognition
US8312214B1 (en) 2007-03-28 2012-11-13 Netapp, Inc. System and method for pausing disk drives in an aggregate
US8209587B1 (en) 2007-04-12 2012-06-26 Netapp, Inc. System and method for eliminating zeroing of disk drives in RAID arrays
US7840837B2 (en) * 2007-04-27 2010-11-23 Netapp, Inc. System and method for protecting memory during system initialization
US7827350B1 (en) 2007-04-27 2010-11-02 Netapp, Inc. Method and system for promoting a snapshot in a distributed file system
US7882304B2 (en) * 2007-04-27 2011-02-01 Netapp, Inc. System and method for efficient updates of sequential block storage
US8219749B2 (en) * 2007-04-27 2012-07-10 Netapp, Inc. System and method for efficient updates of sequential block storage
US8898536B2 (en) * 2007-04-27 2014-11-25 Netapp, Inc. Multi-core engine for detecting bit errors
US7752489B2 (en) 2007-05-10 2010-07-06 International Business Machines Corporation Data integrity validation in storage systems
US7836331B1 (en) 2007-05-15 2010-11-16 Netapp, Inc. System and method for protecting the contents of memory during error conditions
US7975102B1 (en) 2007-08-06 2011-07-05 Netapp, Inc. Technique to avoid cascaded hot spotting
US7873878B2 (en) * 2007-09-24 2011-01-18 International Business Machines Corporation Data integrity validation in storage systems
US7873803B2 (en) 2007-09-25 2011-01-18 Sandisk Corporation Nonvolatile memory with self recovery
US7996636B1 (en) 2007-11-06 2011-08-09 Netapp, Inc. Uniquely identifying block context signatures in a storage volume hierarchy
US7984259B1 (en) 2007-12-17 2011-07-19 Netapp, Inc. Reducing load imbalance in a storage system
US8380674B1 (en) 2008-01-09 2013-02-19 Netapp, Inc. System and method for migrating lun data between data containers
US8621154B1 (en) 2008-04-18 2013-12-31 Netapp, Inc. Flow based reply cache
US8725986B1 (en) 2008-04-18 2014-05-13 Netapp, Inc. System and method for volume block number to disk block number mapping
US8161236B1 (en) 2008-04-23 2012-04-17 Netapp, Inc. Persistent reply cache integrated with file system
US8006128B2 (en) * 2008-07-31 2011-08-23 Datadirect Networks, Inc. Prioritized rebuilding of a storage device
WO2010049928A1 (en) * 2008-10-27 2010-05-06 Kaminario Tehnologies Ltd. System and methods for raid writing and asynchronous parity computation
US9158579B1 (en) 2008-11-10 2015-10-13 Netapp, Inc. System having operation queues corresponding to operation execution time
US8392682B2 (en) 2008-12-17 2013-03-05 Unisys Corporation Storage security using cryptographic splitting
AU2009313741A1 (en) * 2008-11-17 2011-07-07 Unisys Corporation Data recovery using error strip identifiers
US8386798B2 (en) 2008-12-23 2013-02-26 Unisys Corporation Block-level data storage using an outstanding write list
US8135980B2 (en) 2008-12-23 2012-03-13 Unisys Corporation Storage availability using cryptographic splitting
US8495417B2 (en) * 2009-01-09 2013-07-23 Netapp, Inc. System and method for redundancy-protected aggregates
US8171227B1 (en) 2009-03-11 2012-05-01 Netapp, Inc. System and method for managing a flow based reply cache
US8433685B2 (en) * 2010-08-18 2013-04-30 Hewlett-Packard Development Company, L.P. Method and system for parity-page distribution among nodes of a multi-node data-storage system
US8849877B2 (en) 2010-08-31 2014-09-30 Datadirect Networks, Inc. Object file system
US8572441B2 (en) * 2011-08-05 2013-10-29 Oracle International Corporation Maximizing encodings of version control bits for memory corruption detection
US8756582B2 (en) * 2011-08-22 2014-06-17 International Business Machines Corporation Tracking a programs calling context using a hybrid code signature
US20130198585A1 (en) * 2012-02-01 2013-08-01 Xyratex Technology Limited Method of, and apparatus for, improved data integrity
US8874956B2 (en) 2012-09-18 2014-10-28 Datadirect Networks, Inc. Data re-protection in a distributed replicated data storage system
US9043559B2 (en) 2012-10-23 2015-05-26 Oracle International Corporation Block memory engine with memory corruption detection
US9367394B2 (en) * 2012-12-07 2016-06-14 Netapp, Inc. Decoupled reliability groups
US8843447B2 (en) 2012-12-14 2014-09-23 Datadirect Networks, Inc. Resilient distributed replicated data storage system
US9020893B2 (en) 2013-03-01 2015-04-28 Datadirect Networks, Inc. Asynchronous namespace maintenance
US10482009B1 (en) 2013-03-15 2019-11-19 Google Llc Use of a logical-to-logical translation map and a logical-to-physical translation map to access a data storage device
US9619499B2 (en) 2013-08-07 2017-04-11 International Business Machines Corporation Hardware implementation of a tournament tree sort algorithm
US9830354B2 (en) 2013-08-07 2017-11-28 International Business Machines Corporation Accelerating multiple query processing operations
US9672298B2 (en) 2014-05-01 2017-06-06 Oracle International Corporation Precise excecution of versioned store instructions
US9563509B2 (en) 2014-07-15 2017-02-07 Nimble Storage, Inc. Methods and systems for storing data in a redundant manner on a plurality of storage units of a storage system
US9195593B1 (en) 2014-09-27 2015-11-24 Oracle International Corporation Hardware assisted object memory migration
US10310813B2 (en) 2014-12-29 2019-06-04 International Business Machines Corporation Hardware implementation of a tournament tree sort algorithm using an external memory
CN107748702B (zh) 2015-06-04 2021-05-04 华为技术有限公司 一种数据恢复方法和装置
US10528546B1 (en) 2015-09-11 2020-01-07 Cohesity, Inc. File system consistency in a distributed system using version vectors
US11016848B2 (en) 2017-11-02 2021-05-25 Seagate Technology Llc Distributed data storage system with initialization-less parity
US11593237B2 (en) 2021-05-28 2023-02-28 International Business Machines Corporation Fast recovery with enhanced raid protection

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387261A (en) * 1965-02-05 1968-06-04 Honeywell Inc Circuit arrangement for detection and correction of errors occurring in the transmission of digital data
US4092732A (en) * 1977-05-31 1978-05-30 International Business Machines Corporation System for recovering data stored in failed memory unit
NL7804674A (nl) * 1978-05-02 1979-11-06 Philips Nv Geheugen met detektie en korrektie van fouten.
US4433388A (en) * 1980-10-06 1984-02-21 Ncr Corporation Longitudinal parity
EP0145805B1 (de) * 1983-12-19 1989-02-08 Deutsche ITT Industries GmbH Korrekturverfahren für Fehler in Zeichensignalen von Video/Teletextsignalen
US4842262A (en) * 1984-02-22 1989-06-27 Delphax Systems Document inverter

Also Published As

Publication number Publication date
JPS62293355A (ja) 1987-12-19
JPH0547857B2 (de) 1993-07-19
CA1270333A (en) 1990-06-12
EP0249091A2 (de) 1987-12-16
US4761785A (en) 1988-08-02
EP0249091A3 (en) 1990-04-25
EP0249091B1 (de) 1994-11-30
US4761785B1 (en) 1996-03-12
DE3750790D1 (de) 1995-01-12

Similar Documents

Publication Publication Date Title
DE3750790T2 (de) Paritätsverteilung zum verbesserten Speicherzugriff.
DE3782756D1 (de) Direktzugriffspeichereinrichtung.
DE3585711D1 (de) Halbleiterspeicheranordnung.
IT8521619A0 (it) Apparato per profilatura.
DE3583091D1 (de) Halbleiterspeicheranordnung.
DE3577944D1 (de) Halbleiterspeicheranordnung.
DE3582376D1 (de) Halbleiterspeicheranordnung.
DE3586377T2 (de) Halbleiterspeicheranordnung.
DE3576236D1 (de) Halbleiterspeicheranordnung.
DE3577367D1 (de) Halbleiterspeicheranordnung.
DE3586556T2 (de) Halbleiterspeicheranordnung.
DE3575225D1 (de) Halbleiterspeicheranordnung.
DE3783100D1 (de) Festwertspeicheranordnung.
DE3576754D1 (de) Halbleiterspeicheranordnung.
DE3585811D1 (de) Direktzugriffsspeicher.
DE3786358T2 (de) Halbleiterspeicher mit System zum seriellen Schnellzugriff.
DE3788855T2 (de) Modulareingerichteter Speicherprüfer.
DE3586675D1 (de) Halbleiterspeicheranordnung.
DE3582960D1 (de) Halbleiterspeicheranordnung.
DE3680829D1 (de) Festwertspeicheranordnung.
DE3580454D1 (de) Halbleiterspeicheranordnung.
DE3578254D1 (de) Halbleiterspeicheranordnung.
DE3581888D1 (de) Halbleiterspeicheranordnung.
DE3577494D1 (de) Halbleiterspeicheranordnung.
DE3888333D1 (de) Zusammenbau zum Datenverteilen.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition