US Patent No: 7,984,324

Number of patents in Portfolio can not be more than 2000

Systems and methods for managing stalled storage devices

ALSO PUBLISHED AS: 20090248975

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Embodiments relate to systems and methods for managing stalled storage devices of a storage system. In one embodiment, a method for managing access to storage devices includes determining that a first storage device, which stores a first resource, is stalled and transitioning the first storage device to a stalled state. The method also includes receiving an access request for at least a portion of the first resource while the first storage device is in the stalled state and attempting to provide access to a representation of the portion of the first resource from at least a second storage device that is not in a stalled state. In another embodiment, a method of managing access requests by a thread for a resource stored on a storage device includes initializing a thread access level for an access request by a thread for the resource. The method also includes determining whether the storage device, which has a device access level, is accessible based at least in part on the thread access level and the device access level and selecting a thread operation based at least in part on the determination of whether the storage device is accessible. The thread operation may be selected from attempting the thread access request if the device is accessible and determining whether to restart the thread access request if the device is not accessible.

Loading the Abstract Image... loading....

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
EMC CORPORATIONHOPKINTON, MA4148

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akidau, Tyler A - 10 240
Daud, Asif - 6 136
Eng, Brian - 3 56
Maykov, Ilya - 6 136
Passey, Aaron J Seattle, WA 82 2698

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EMC CORPORATION (71)
5,884,098 RAID controller system utilizing front end and back end caching systems including communication path connecting two caching systems and synchronizing allocation of blocks in caching systems 208 1996
6,209,059 Method and apparatus for the on-line reconfiguration of the logical volumes of a data storage system 122 1997
6,154,854 Logical partitioning of a redundant array storage system 99 1998
6,385,626 Method and apparatus for identifying changes to a logical object based on changes to the logical object at physical level 99 1998
6,457,139 Method and apparatus for providing a host computer with information relating to the mapping of logical volumes within an intelligent storage system 152 1998
2003/0033,308 System and methods for providing a distributed file system utilizing metadata to track information about data stored throughout the system 185 2001
7,685,126 System and methods for providing a distributed file system utilizing metadata to track information about data stored throughout the system 120 2001
7,146,524 Systems and methods for providing a distributed file system incorporating a virtual hot spare 107 2002
2005/0066,095 Multi-threaded write interface and methods for increasing the single file read and write throughput of a file server 112 2003
2004/0153,479 Systems and methods for restriping files in a distributed file system 137 2003
2005/0138,195 Data streaming and backup systems having multiple concurrent read threads for improved small file performance 59 2003
7,318,134 Continuous data backup using distributed journaling 99 2004
2007/0091,790 Systems and methods for providing variable protection 61 2005
2007/0094,269 Systems and methods for distributed system scanning 85 2005
2007/0094,277 Systems and methods for maintaining distributed data 61 2005
2007/0094,310 Systems and methods for accessing and updating distributed data 66 2005
7,346,720 Systems and methods for managing concurrent access requests to a shared resource 39 2005
7,386,675 Systems and methods for using excitement values to predict future access to resources 40 2005
7,551,572 Systems and methods for providing variable protection 38 2005
2006/0095,438 Non-blocking commit protocol systems and methods 60 2005
2006/0101,062 Distributed system with asynchronous execution systems and methods 63 2005
2007/0171,919 Message batching with checkpoints systems and methods 79 2005
2007/0195,810 Systems and methods for providing a quiescing protocol 58 2006
2007/0233,710 Systems and methods for notifying listeners of events 55 2006
7,756,898 Systems and methods for notifying listeners of events 38 2006
2007/0168,351 Non-blocking commit protocol systems and methods 59 2006
2008/0031,238 Systems and methods for configuring multiple network interfaces 61 2006
2006/0277,432 Systems and methods for providing a distributed file system incorporating a virtual hot spare 83 2006
7,509,524 Systems and methods for a distributed file system with data recovery 44 2006
2008/0046,432 Systems and methods for a snapshot of data 73 2006
2008/0046,443 Systems and methods for providing nonlinear journaling 54 2006
2008/0046,444 Systems and methods for providing nonlinear journaling 55 2006
2008/0046,445 Systems and methods of reverse lookup 62 2006
2008/0046,475 Systems and methods for a snapshot of data 56 2006
2008/0046,476 Systems and methods for a snapshot of data 61 2006
2008/0046,667 Systems and methods for allowing incremental journaling 63 2006
2008/0059,541 Systems and methods for a snapshot of data 68 2006
2008/0126,365 Systems and methods for providing nonlinear journaling 55 2006
7,590,652 Systems and methods of reverse lookup 38 2006
7,676,691 Systems and methods for providing nonlinear journaling 42 2006
7,680,836 Systems and methods for a snapshot of data 44 2006
7,680,842 Systems and methods for a snapshot of data 44 2006
7,752,402 Systems and methods for allowing incremental journaling 40 2006
2008/0151,724 Systems and methods for managing unavailable storage devices 42 2006
2008/0155,191 Systems and methods for providing heterogeneous storage systems 60 2006
2008/0154,978 Systems and methods of directory entry encodings 56 2006
7,593,938 Systems and methods of directory entry encodings 40 2006
2008/0168,458 Systems and methods for managing semantic locks 60 2007
7,509,448 Systems and methods for managing semantic locks 57 2007
2008/0256,103 Systems and methods of providing possible value ranges 41 2007
2008/0256,537 Systems and methods of quota accounting 37 2007
2008/0256,545 Systems and methods of managing resource utilization on a threaded computer system 47 2007
2008/0021,907 Systems and methods for providing a distributed file system utilizing metadata to track information about data stored throughout the system 59 2007
7,743,033 Systems and methods for providing a distributed file system utilizing metadata to track information about data stored throughout the system 40 2007
2009/0055,399 Systems and methods for reading objects in a file system 40 2007
2009/0055,604 Systems and methods for portals into snapshot data 34 2007
2009/0055,607 Systems and methods for adaptive copy on write 60 2007
2009/0248,756 SYSTEMS AND METHODS FOR A READ ONLY MODE FOR A PORTION OF A STORAGE SYSTEM 39 2008
2009/0248,975 SYSTEMS AND METHODS FOR MANAGING STALLED STORAGE DEVICES 39 2008
2009/0249,013 SYSTEMS AND METHODS FOR MANAGING STALLED STORAGE DEVICES 37 2008
2008/0243,773 SYSTEMS AND METHODS FOR A DISTRIBUTED FILE SYSTEM WITH DATA RECOVERY 51 2008
2009/0210,880 SYSTEMS AND METHODS FOR MANAGING SEMANTIC LOCKS 36 2009
2009/0252,066 SYSTEMS AND METHODS FOR PROVIDING VARIABLE PROTECTION 36 2009
2009/0327,218 Systems and Methods of Reverse Lookup 37 2009
7,739,288 Systems and methods of directory entry encodings 38 2009
2010/0223,235 SYSTEMS AND METHODS FOR PROVIDING NONLINEAR JOURNALING 35 2010
2010/0161,556 SYSTEMS AND METHODS FOR A SNAPSHOT OF DATA 39 2010
2010/0161,557 SYSTEMS AND METHODS FOR A SNAPSHOT OF DATA 37 2010
2010/0185,592 Snapshot indexing 36 2010
2010/0235,413 SYSTEMS AND METHODS FOR PROVIDING A DISTRIBUTED FILE SYSTEM UTILIZING METADATA TO TRACK INFORMATION ABOUT DATA STORED THROUGHOUT THE SYSTEM 39 2010
2010/0241,632 SYSTEMS AND METHODS OF DIRECTORY ENTRY ENCODINGS 28 2010
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (30)
5,230,047 Method for balancing of distributed tree file structures in parallel computing systems to enable recovery after a failure 103 1990
5,251,206 Hybrid switching system for a communication node 73 1991
5,258,984 Method and means for distributed sparing in DASD arrays 122 1991
5,359,594 Power-saving full duplex nodal communications systems 65 1992
5,734,826 Variable cyclic redundancy coding method and apparatus for use in a multistage network 94 1992
5,596,709 Method and apparatus for recovering parity protected data 98 1992
5,606,669 System for managing topology of a network in spanning tree data structure by maintaining link table and parent table in each network node 244 1995
5,680,621 System and method for domained incremental changes storage and retrieval 54 1995
5,870,563 Method and apparatus for optimizing message transmission 68 1995
5,799,305 Method of commitment in a distributed database transaction 152 1995
5,657,439 Distributed subsystem sparing 90 1995
5,805,578 Automatic reconfiguration of multipoint communication channels 133 1996
5,668,943 Virtual shared disks with application transparent recovery 196 1996
5,917,998 Method and apparatus for establishing and maintaining the status of membership sets used in mirrored read and write input/output without logging 111 1996
5,805,900 Method and apparatus for serializing resource access requests in a multisystem complex 73 1996
5,649,200 Dynamic rule-based version control system 340 1996
5,878,414 Constructing a transaction serialization order based on parallel or distributed database log files 68 1997
6,122,754 Method and system for data recovery using a distributed and scalable data structure 84 1998
6,334,168 Method and system for updating data in a data storage system 79 1999
6,502,174 Method and system for managing meta data 87 1999
6,907,011 Quiescent reconfiguration of a routing network 64 1999
6,895,482 Reordering and flushing commands in a computer memory subsystem 45 1999
6,917,942 System for dynamically evaluating locks in a distributed data storage system 61 2000
6,618,798 Method, system, program, and data structures for mapping logical units to a storage space comprises of at least one array of storage units 107 2000
2003/0005,159 Method and system for generating and serving multilingual web pages 104 2001
6,920,494 Storage area network methods and apparatus with virtual SAN recognition 103 2001
2004/0133,670 Distributed notification and action mechanism for mirroring-related events 57 2003
7,440,966 Method and apparatus for file system snapshot persistence 86 2004
2006/0129,983 Apparatus, system, and method for sharing and accessing data by scopes 63 2004
7,546,412 Apparatus, system, and method for global metadata copy repair 49 2005
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (15)
5,329,626 System for distributed computation processing includes dynamic assignment of predicates to define interdependencies 110 1990
5,481,699 Durable atomic storage update manager 86 1995
5,696,895 Fault tolerant multiple network servers 243 1995
5,774,643 Enhanced raid write hole protection and recovery 312 1995
6,055,564 Admission control where priority indicator is used to discriminate between messages 145 1998
6,671,704 Method and apparatus for handling failures of resource managers in a clustered environment 65 1999
6,453,389 Optimizing computer performance by using data compression principles to minimize a loss function 79 1999
6,742,020 System and method for managing data flow and measuring service in a storage network 93 2000
6,687,805 Method and system for logical-object-to-physical-location translation and physical separation of logical objects 46 2000
6,631,411 Apparatus and method for monitoring a chain of electronic transactions 52 2001
6,895,534 Systems and methods for providing automated diagnostic services for a cluster computer system 86 2001
2003/0149,750 Distributed storage array 77 2002
2004/0143,647 System and method for efficiently replicating a file among a plurality of recipients in a reliable manner 54 2003
7,152,182 Data redundancy system and method 62 2003
2007/0255,765 Systems and methods for file maintenance 41 2006
 
MICROSOFT CORPORATION (13)
5,806,065 Data system with distributed tree indexes and method for maintaining the indexes 172 1996
5,878,410 File system sort order indexes 172 1996
6,202,085 System and method for incremental change synchronization between multiple copies of data 185 1996
5,890,147 Scope testing of documents in a search engine using document to folder mapping 229 1997
6,463,442 Container independent data binding system 97 1998
6,279,007 Architecture for managing query friendly hierarchical values 185 1998
6,408,313 Dynamic memory allocation based on free memory size 79 1998
6,523,130 Storage system having error detection and recovery 115 1999
6,571,244 Run formation in large scale sorting using batched replacement selection 75 1999
6,546,443 Concurrency-safe reader-writer lock with time out support 116 1999
6,594,660 Share latch clearing 63 2000
2005/0289,188 Allocation locks and their use 61 2004
2006/0230,411 Resource accessing with locking 65 2005
 
BROADBAND STORAGE, LLC (12)
2002/0124,137 Enhancing disk array performance via variable parity based load balancing 165 2002
2002/0138,559 Dynamically distributed file system 119 2002
2002/0156,973 Enhanced disk array 82 2002
2002/0156,974 Redundant dynamically distributed file system 84 2002
2002/0161,846 Data path controller architecture 63 2002
2002/0161,850 Data path accelerator for storage systems 73 2002
2002/0165,942 Data path accelerator with variable parity, variable length, and variable extent parity groups 84 2002
2002/0169,827 Hot adding file system processors 77 2002
2002/0174,295 Enhanced file system failure tolerance 162 2002
2002/0174,296 Disk replacement via hot swapping with variable parity 85 2002
2002/0178,162 Integrated distributed file system with variable parity groups 85 2002
2002/0191,311 Dynamically scalable disk array 71 2002
 
SUN MICROSYSTEMS, INC. (11)
5,761,659 Method, product, and structure for flexible range locking of read and write requests using shared and exclusive locks, flags, sub-locks, and counters 123 1996
5,822,790 Voting data prefetch engine 114 1997
6,014,669 Highly-available distributed cluster configuration database 298 1997
6,117,181 Synchronization mechanism for distributed hardware simulation 87 1998
6,021,414 Single transaction technique for a journaling file system of a computer operating system 106 1998
6,748,429 Method to dynamically change cluster or distributed system configuration 104 2000
2003/0061,491 System and method for the allocation of network storage 161 2001
7,313,614 Switching system 125 2001
6,907,520 Threshold-based load address prediction and new thread identification in a multithreaded microprocessor 59 2002
7,111,305 Facilitating event notification through use of an inverse mapping structure for subset determination 58 2002
2005/0044,197 Structured methodology and design patterns for web services 387 2003
 
SEACHANGE INTERNATIONAL, INC. (8)
5,862,312 Loosely coupled mass storage computer cluster 154 1995
5,996,089 Loosely coupled mass storage computer cluster 127 1997
6,321,345 Slow response in redundant arrays of inexpensive disks 86 1999
6,571,349 Loosely coupled mass storage computer cluster 70 1999
6,449,730 Loosely coupled mass storage computer cluster 97 2001
6,557,114 Loosely coupled mass storage computer cluster 68 2001
6,567,926 Loosely coupled mass storage computer cluster 64 2001
6,574,745 Loosely coupled mass storage computer cluster 64 2002
 
INTEL CORPORATION (7)
6,353,823 Method and system for using associative metadata 195 1999
2002/0087,366 Tentative-hold-based protocol for distributed transaction processing 82 2000
7,181,746 Initialization, reconfiguration, and shut down of a module function 42 2001
7,240,235 Journaling technique for write transactions to mass storage 59 2002
6,934,878 Failure detection and failure handling in cluster controller networks 72 2002
7,257,257 Method and apparatus for differential, bandwidth-efficient and storage-efficient backups 84 2003
2006/0288,161 RAID power safe apparatus, systems, and methods 61 2005
 
ORACLE INTERNATIONAL CORPORATION (7)
6,070,172 On-line free space defragmentation of a contiguous-file file system 109 1997
7,290,056 Monitoring latency of a network to manage termination of distributed transactions 131 2000
7,206,805 Asynchronous transcription object management system 238 2000
2004/0205,141 System and method for message ordering in a message oriented network 80 2004
2006/0129,584 Performing an action in response to a file system event 89 2004
2008/0010,507 Selecting optimal repair strategy for mirrored files 59 2006
2007/0233,684 NEIGHBORING LOCKING TECHNIQUE FOR INCREASING CONCURRENCY AMONG TRANSACTIONS 57 2007
 
NETWORK APPLIANCE, INC. (6)
5,163,131 Parallel I/O network file server architecture 872 1989
6,038,570 Method for allocating files in a file system integrated with a RAID disk sub-system 350 1995
6,081,883 Processing system with dynamically allocatable buffer memory 163 1997
6,138,126 Method for allocating files in a file system integrated with a raid disk sub-system 177 1999
7,225,204 System and method for asynchronous mirroring of snapshots at a destination using a purgatory directory and inode mapping 133 2002
2007/0038,887 Remote disaster recovery and data migration using virtual appliance migration 45 2006
 
GOOGLE INC. (5)
5,933,834 System and method for re-striping a set of objects onto an exploded array of storage units in a computer system 103 1997
5,966,707 Method for managing a plurality of data processes residing in heterogeneous data repositories 224 1997
6,567,894 Method and apparatus to prefetch sequential pages in a multi-stream environment 69 1999
7,124,264 Storage system, control method for storage system, and storage control unit 56 2004
2008/0044,016 Detecting duplicate and near-duplicate files 71 2006
 
HITACHI, LTD. (4)
5,754,756 Disk array system having adjustable parity group sizes based on storage unit capacities 95 1996
7,017,003 Disk array apparatus and disk array apparatus control method 59 2004
7,451,341 Storage system and communications path control method for storage system 60 2004
7,571,348 Storage system creating a recovery request point enabling execution of a recovery 47 2006
 
Storage Technology Corporation (4)
5,403,639 File server having snapshot application data groups 473 1992
6,732,125 Self archiving log structured volume with intrinsic data protection 238 2000
6,990,604 Virtual storage status coalescing with a plurality of physical storage devices 56 2001
7,007,044 Storage backup system for backing up data written to a primary storage device to multiple virtual mirrors using a reconciliation process that reflects the changing state of the primary storage device over time 96 2002
 
KABUSHIKI KAISHA TOSHIBA (3)
6,081,833 Memory space management method, data transfer method, and computer device for distributed computer system 77 1996
7,373,426 Network system using name server with pseudo host name and pseudo IP address generation function 58 2003
2004/0267,747 Transaction processing system supporting concurrent accesses to hierarchical data by transactions 48 2004
 
LSI LOGIC CORPORATION (3)
6,173,374 System and method for peer-to-peer accelerated I/O shipping between host bus adapters in clustered computer network 236 1998
6,526,478 Raid LUN creation using proportional disk mapping 103 2000
6,499,091 System and method for synchronizing data mirrored by storage subsystems 73 2000
 
NETAPP, INC. (3)
6,594,744 Managing a snapshot volume or one or more checkpoint volumes with multiple point-in-time images in a single repository 155 2000
7,043,485 System and method for storage of snapshot metadata in a remote file 120 2002
7,533,298 Write journaling using battery backed cache 54 2005
 
PMC-SIERRA, INC. (3)
6,219,693 File array storage architecture having file system distributed across a data processing platform 145 1997
6,029,168 Decentralized file mapping in a striped network file system in a distributed computing environment 223 1998
6,725,392 Controller fault recovery system for a distributed file system 117 2000
 
SYMANTEC OPERATING CORPORATION (3)
7,631,066 System and method for preventing data corruption in computer system clusters 45 2002
7,228,299 System and method for performing file lookups based on tags 69 2003
7,194,487 System and method for recording the order of a change caused by restoring a primary volume during ongoing replication of the primary volume 62 2003
 
APPLE INC. (2)
6,434,574 System and method for storing and retrieving filenames and files in computer memory using multiple encodings 63 1998
2008/0034,004 System for electronic backup 81 2006
 
CISCO TECHNOLOGY, INC. (2)
6,856,591 Method and system for high reliability cluster management 169 2000
2006/0155,831 Network topology based storage allocation for virtualization 49 2005
 
International Computers Limited (2)
5,459,871 Detection and resolution of resource deadlocks in a distributed data processing system 103 1993
5,884,303 Parallel searching technique 96 1997
 
OVERLAND STORAGE, INC. (2)
6,871,295 Dynamic data recovery 81 2002
2005/0010,592 Method and system for taking a data snapshot 51 2003
 
RAINFINITY, INC. (2)
6,801,949 Distributed server cluster with graphical user interface 241 2000
7,546,354 Dynamic network based storage with high availability 58 2002
 
SONY UNITED KINGDOM LIMITED (2)
5,943,690 Data storage apparatus and method allocating sets of data 68 1997
2004/0003,053 System 60 2003
 
TWITTER, INC. (2)
7,069,320 Reconfiguring a network by utilizing a predetermined length quiescent state 64 1999
2004/0240,444 System and method for managing transactions in a messaging system 43 2003
 
AB INITIO TECHNOLOGY LLC (1)
2001/0042,224 Continuous flow compute point based data processing 52 2000
 
ALCATEL (1)
6,549,513 Method and apparatus for fast distributed restoration of a communication network 106 1999
 
ATEX PUBLISHING SYSTEMS CORPORATION (1)
5,181,162 Document management and production system 468 1989
 
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY (1)
2003/0014,391 Data distribution 105 2002
 
CGI TECHNOLOGIES AND SOLUTIONS INC. (1)
6,415,259 Automatic work progress tracking and optimizing engine for a telecommunications customer care and billing system 188 1999
 
CONSTELLATION TECHNOLOGIES LLC (1)
2003/0009,591 Apparatus and method for managing internet resource requests 33 2001
 
CORPORATION FOR NATIONAL RESEARCH INITIATIVES (1)
2003/0020,173 Radio frequency microelectromechanical systems (MEMS) devices on low-temperature co-fired ceramic (LTCC) substrates 16 2002
 
CRAY INC. (1)
7,558,910 Detecting access to a memory location in a multithreaded environment 42 2003
 
Data Equation Limited (1)
2008/0005,145 Data processing 55 2007
 
DELL PRODUCTS L.P. (1)
6,598,174 Method and apparatus for storage unit replacement in non-redundant array 204 2000
 
Delphi Data, a division of Sparks Industries, Inc. (1)
5,212,784 Automated concurrent data backup system 261 1990
 
DOT HILL SYSTEMS CORPORATION (1)
6,990,611 Recovering data from arrays of storage devices after certain failures 51 2000
 
EMULEX CORPORATION (1)
6,393,483 Method and apparatus for network interface card load balancing and port aggregation 162 1997
 
F5 NETWORKS, INC. (1)
6,405,219 Method and system for automatically updating the version of a set of files stored on content servers 147 1999
 
GRAVIC, INC. (1)
7,113,938 Method of increasing system availability by splitting a system 37 2003
 
HARRIS CORPORATION (1)
6,954,435 Determining quality of service (QoS) routing for mobile ad hoc networks 139 2002
 
HITACHI INFORMATION & COIMMUNICATION ENGINEERING, LTD. (1)
5,548,724 File server system and file access control method of the same 279 1994
 
IBM INTERNATIONAL GROUP BV (1)
7,577,667 Programmable streaming data processor for database appliance having multiple processing unit groups 62 2003
 
IDENTRUST, INC. (1)
2002/0029,200 System and method for providing certificate validation and other services 85 2001
 
INTELLIGENT INTELLECTUAL PROPERTY HOLDINGS 2 LLC (1)
2008/0168,304 APPARATUS, SYSTEM, AND METHOD FOR DATA STORAGE USING PROGRESSIVE RAID 55 2007
 
ITT MANUFACTURING ENTERPRISES, INC. (1)
7,184,421 Method and apparatus for on demand multicast and unicast using controlled flood multicast communications 131 2001
 
KIZNA CORPORATION (1)
2002/0078,180 Information collection server, information collection method, and recording medium 63 2001
 
Konica Corporation (1)
4,464,279 Magnetic recording medium 36 1982
 
LOUDCLOUD, INC. (1)
2002/0158,900 Graphical user interfaces for network management automated provisioning environment 49 2001
 
LYNESS, STANLEY (1)
6,496,842 Navigating heirarchically organized information 145 1999
 
MASCOTECH, INC. (1)
6,662,184 Lock-free wild card search data structure and method 93 2000
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
2006/0074,922 File management device, file management method, file management program and recording medium 62 2003
 
MAXTOR CORPORATION (1)
5,548,795 Method for determining command execution dependencies within command queue reordering process 88 1994
 
MICRO-STAR INT'L CO., LTD. (1)
6,384,626 Programmable apparatus and method for programming a programmable device 70 2001
 
MOSYS, INC. (1)
6,000,007 Caching in a multi-processor computer system 62 1998
 
MOTOROLA SOLUTIONS, INC. (1)
2003/0109,253 Digital communications system 62 2002
 
NEC CORPORATION (1)
2002/0038,436 Disk array apparatus, error control method for the same apparatus, and control program for the same method 73 2001
 
NOKIA CORPORATION (1)
2006/0083,177 Listener mechanism in a distributed network system 53 2004
 
NORTHWESTERN UNIVERSITY (1)
5,694,593 Distributed computer database system and method 161 1994
 
NSTOR CORPORATION (1)
6,052,759 Method for organizing storage devices of unequal storage capacity and distributing data using different raid formats depending on size of rectangles containing sets of the storage devices 138 1998
 
NVIDIA CORPORATION (1)
7,386,697 Memory management for virtual address space with translation units of variable range size 47 2005
 
OPENTV, INC. (1)
2003/0163,726 Method and apparatus for providing a hierarchical security profile object 61 2003
 
PAONESSA RESEARCH, LIMITED LIABILITY COMPANY (1)
6,848,029 Method and apparatus for prefetching recursive data structures 113 2001
 
PHILIPS ELECTRONICS NORTH AMERICA CORPORATION (1)
2002/0078,161 UPnP enabling device for heterogeneous networks of slave devices 96 2000
 
PLENUS TECHNOLOGY LTD. (1)
6,594,655 Wildcards in radix- search tree structures 76 2001
 
Pluris, Inc. (1)
5,884,046 Apparatus and method for sharing data and routing messages between a plurality of workstations in a local area network 193 1996
 
PORTAUTHORITY TECHNOLOGIES, INC. (1)
2004/0189,682 Method and a system for embedding textual forensic information 67 2003
 
SAP AG (1)
2006/0206,536 Providing a snapshot of a subset of a file system 75 2006
 
SCIENTIFIC RESEARCH CORPORATION (1)
7,177,295 Wireless routing protocol for ad-hoc networks 160 2002
 
SEAGATE TECHNOLOGY LLC (1)
7,043,567 Method and apparatus for determining the order of execution of queued commands in a data storage system 44 2002
 
SILICON GRAPHICS INTERNATIONAL, CORP. (1)
7,007,097 Method and system for covering multiple resourcces with a single credit in a computer system 55 2001
 
SK TELECOM CO., LTD. (1)
2006/0129,631 Method for controlling a media message upload through a wireless communication network 64 2004
 
SRI INTERNATIONAL (1)
6,922,696 Lattice-based security classification system and method 71 2000
 
STEELEYE TECHNOLOGY, INC. (1)
5,612,865 Dynamic hashing method for optimal distribution of locks within a clustered system 140 1995
 
SYBASE, INC. (1)
7,249,118 Database system and methods 113 2002
 
SYMANTEC CORPORATION (1)
6,108,759 Manipulation of partitions holding advanced file systems 122 1997
 
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. (1)
5,568,629 Method for partitioning disk drives within a physical disk array and selectively assigning disk drive partitions into a logical disk array 231 1993
 
TEXAS INSTRUMENTS INCORPORATED (1)
6,397,311 System and method for defragmenting a file system 111 1995
 
The Trustees of Columbia University in the City of New York (1)
2002/0163,889 Method and apparatus for providing services on a dynamically addressed network 98 2001
 
THOMSON LICENSING (1)
2004/0078,812 Method and apparatus for acquiring media services available from content aggregators 113 2003
 
Toyo Soda Manufacturing Co., Ltd. (1)
4,504,677 Process for producing methacrylic acid 32 1978
 
TRANSOFT TECHNOLOGY CORPORATION (1)
6,044,367 Distributed I/O store 231 1998
 
UNIVERSITY OF SOUTHERN CALIFORNIA (1)
2003/0161,302 Continuous media system 49 2003
 
UNWIRED PLANET, LLC (1)
6,421,781 Method and apparatus for maintaining security in a push server 225 1998
 
VERANO (1)
6,055,543 File wrapper containing cataloging information for content searching across multiple platforms 206 1997
 
VIA TECHNOLOGIES, INC. (1)
6,502,172 Memory accessing and controlling unit 60 2002
 
VLADIMIR MATENA (1)
2004/0158,549 Method and apparatus for online transaction processing 103 2004
 
VTECH TELECOMMUNICATIONS LIMITED (1)
6,940,966 Method and apparatus for detection of a telephone CPE alerting signal 60 2002
 
WELLS FARGO CAPITAL FINANCE, LLC (1)
2004/0117,802 Event monitoring system and method 52 2002
 
WISCONSIN ALUMNI RESEARCH FOUNDATION (1)
6,658,554 Electronic processor providing direct data transfer between linked data consuming instructions 47 1999
 
ZAMBEEL, INC. (1)
2004/0199,812 Fault tolerance using logical checkpointing in computing systems 74 2001
 
Other [Check patent profile for assignment information] (8)
2002/0107,877 SYSTEM FOR BACKING UP FILES FROM DISK VOLUMES ON MULTIPLE NODES OF A COMPUTER NETWORK 277 1997
6,671,686 Decentralized, distributed internet data management 74 2001
2002/0072,974 System and method for displaying and selling goods and services in a retail environment employing electronic shopper aids 202 2001
7,370,064 Database remote replication for back-end tier of multi-tier computer systems 51 2002
7,103,597 Adaptive transaction manager for complex transactions and business process 82 2002
2005/0125,456 File migration method based on access history 46 2004
2005/0187,889 Method for managing file using network structure, operation object display limiting program, and recording medium 44 2004
2008/0294,611 HIERARCHICAL STORAGE MANAGEMENT USING DYNAMIC TABLES OF CONTENTS AND SETS OF TABLES OF CONTENTS 51 2008

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
EMC CORPORATION (13)
8,238,350 Message batching with checkpoints systems and methods 1 2005
8,140,623 Non-blocking commit protocol systems and methods 0 2006
8,286,029 Systems and methods for managing unavailable storage devices 1 2006
8,082,379 Systems and methods for managing semantic locks 7 2009
8,214,334 Systems and methods for distributed system scanning 1 2010
8,214,400 Systems and methods for maintaining distributed data 1 2010
8,356,150 Systems and methods for providing nonlinear journaling 3 2010
8,625,464 Systems and methods for providing a quiescing protocol 0 2010
8,176,013 Systems and methods for accessing and updating distributed data 2 2010
8,356,013 Systems and methods for a snapshot of data 1 2010
8,195,905 Systems and methods of quota accounting 1 2011
8,200,632 Systems and methods for adaptive copy on write 2 2011
8,380,689 Systems and methods for providing nonlinear journaling 1 2011
 
FUJITSU LIMITED (1)
8,667,186 IO control method and program and computer 0 2012

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Jan 19, 2015
7.5 Year Payment $3600.00 $1800.00 $900.00 Jan 19, 2019
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 19, 2023
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00