Patents by Inventor Susan Kay Candelaria

Susan Kay Candelaria has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9430395
    Abstract: A method, system, and computer program product for grouping and dispatching scans in a cache directory of a processing environment is provided. A plurality of scan tasks is aggregated from a scan wait queue into a scan task queue. The plurality of scan tasks is determined by selecting one of (1) each of the plurality of scan tasks on the scan wait queue, (2) a predetermined number of the plurality of scan tasks on the scan wait queue, and (3) a set of scan tasks of a similar type on the scan wait queue. A first scan task from the plurality of scan tasks is selected from the scan task queue. The scan task is performed.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: August 30, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael Thomas Benhase, Susan Kay Candelaria, Lokesh Mohan Gupta, Kenneth Wayne Todd
  • Patent number: 8312210
    Abstract: An apparatus, system, and method are disclosed for storing and retrieving compressed data. A compression module compresses a data file organized in logical tracks. A ratio module determines a track compression ratio. The track compression ratio is a ratio of an integer value n to one. A destage module destages a single directory entry for the data file to a directory. The directory entry points to a zeroth track on a hard disk drive. The destage module further destages the data file sequentially to tracks of the hard disk drive from the zeroth track with n logical tracks of the data file stored on one physical track of the hard disk drive. A stage module stages a kth logical track from a physical track of the hard disk drive. The physical track is specified by an integer value of k divided by n.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: November 13, 2012
    Inventors: Michael Thomas Benhase, Susan Kay Candelaria, Yu-Cheng Hsu, Minh-Ngoc Le Huynh
  • Patent number: 7941574
    Abstract: A method for combining partial records into a single direct memory access (DMA) operation for a count key data (CKD) protocol in a computer environment is provided. In an initiator processor of the computer environment, a number of the partial records to be prefetched is determined by gathering a plurality of descriptor information for a command according to a predetermined algorithm having a plurality of assumptions for the command. The number of partial records is prefetched. At least one of record headers and record keys of the number of partial records are concatenated into the single DMA operation. The DMA operation is forwarded to a receiver process to be completed.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: May 10, 2011
    Assignee: International Business Machines Corporation
    Inventors: Susan Kay Candelaria, Roger Gregory Hathorn, Matthew Joseph Kalos, Beth Ann Peterson, Roman Yusufov
  • Patent number: 7934122
    Abstract: Method, system and computer program product embodiments for, in an input/output (I/O) link handling complex instruction chains, a messaging scheme incorporating a method of error recovery between an initiator processor and a receiver processor, are provided. An operation initiation message is been sent from the initiator processor to the receiver processor for the receiver processor to begin work on an operation. If determined to be necessary, a terminate operation message is sent from the initiator processor to the receiver processor. The initiator processor withholds sending additional messages for the operation until a terminate operation response message is received. Once the terminate operation message is received, outstanding messages in process are flushed from the receiver processor. The receiver processor withholds sending additional messages to the initiator processor as the outstanding messages are completed.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: April 26, 2011
    Assignee: International Business Machines Corporation
    Inventors: Susan Kay Candelaria, Clint Alan Hardy, Roger Gregory Hathorn, Matthew Joseph Kalos, Beth Ann Peterson
  • Patent number: 7826380
    Abstract: An apparatus, system, and method are disclosed for data tracking and, in particular, for facilitating failure management within an electronic data communication system. The apparatus includes a tracking module and an error analysis module. The tracking module stores an adapter identifier in a tracking array. The adapter identifier corresponds to a source adapter from which data is received. The error analysis module determines a source of a data failure in response to recognition of the data failure. The data failure may occur on a host adapter, a device adapter, a communication fabric, a multi-processor, or another communication device. The apparatus, system, and method may be implemented in place of or in addition to hardware-assisted data integrity checking within a data storage system.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: November 2, 2010
    Assignee: International Business Machines Corporation
    Inventors: Kevin John Ash, Susan Kay Candelaria, David Frank Mannenbach, Brian Anthony Rinaldi
  • Patent number: 7818473
    Abstract: A method of packaging locate record commands for device command word (DCW) processing is provided. A first locate record command is packaged into DCW prefix parameter data. The first locate record command includes first search and first seek arguments, a first intent count argument, a first transfer length factor argument, and a plurality of remaining arguments. A plurality of truncated locate record commands is embedded in the DCW prefix parameter data as concatenations to the first locate record command. Each of the plurality of truncated locate record commands include a unique search argument, intent count argument, and transfer length factor argument. Seek argument parameters for each of the plurality of truncated locate record commands are calculated by taking an offset from the first seek argument and the first search argument, applying the offset to each of the plurality of truncated locate record commands. The plurality of remaining arguments is shared.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: October 19, 2010
    Assignee: International Business Machines Corporation
    Inventors: Susan Kay Candelaria, Matthew Joseph Kalos, Beth Ann Peterson
  • Patent number: 7681047
    Abstract: Provided are a method, system, and article of manufacture, wherein a controller receives encrypted data from a first storage unit coupled to the controller. The received encrypted data is stored in a second storage unit coupled to the controller, wherein the controller is capable of accessing the second storage unit faster in comparison to the first storage unit. The encrypted data is maintained in the second storage unit, until at least one condition is satisfied.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: March 16, 2010
    Assignee: International Business Machines Corporation
    Inventors: Michael Thomas Benhase, Susan Kay Candelaria
  • Publication number: 20100037098
    Abstract: Method, system and computer program product embodiments for, in an input/output (I/O) link handling complex instruction chains, a messaging scheme incorporating a method of error recovery between an initiator processor and a receiver processor, are provided. An operation initiation message is been sent from the initiator processor to the receiver processor for the receiver processor to begin work on an operation. If determined to be necessary, a terminate operation message is sent from the initiator processor to the receiver processor. The initiator processor withholds sending additional messages for the operation until a terminate operation response message is received. Once the terminate operation message is received, outstanding messages in process are flushed from the receiver processor. The receiver processor withholds sending additional messages to the initiator processor as the outstanding messages are completed.
    Type: Application
    Filed: August 11, 2008
    Publication date: February 11, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Susan Kay CANDELARIA, Clint Alan HARDY, Roger Gregory HATHORN, Matthew Joseph KALOS, Beth Ann PETERSON
  • Publication number: 20100036977
    Abstract: A method for combining partial records into a single direct memory access (DMA) operation for a count key data (CKD) protocol in a computer environment is provided. In an initiator processor of the computer environment, a number of the partial records to be prefetched is determined by gathering a plurality of descriptor information for a command according to a predetermined algorithm having a plurality of assumptions for the command. The number of partial records is prefetched. At least one of record headers and record keys of the number of partial records are concatenated into the single DMA operation. The DMA operation is forwarded to a receiver process to be completed.
    Type: Application
    Filed: August 11, 2008
    Publication date: February 11, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Susan Kay CANDELARIA, Roger Gregory HATHORN, Matthew Joseph KALOS, Beth Ann PETERSON, Roman YUSUFOV
  • Publication number: 20100037226
    Abstract: A method, system, and computer program product for grouping and dispatching scans in a cache directory of a processing environment is provided. A plurality of scan tasks is aggregated from a scan wait queue into a scan task queue. The plurality of scan tasks is determined by selecting one of (1) each of the plurality of scan tasks on the scan wait queue, (2) a predetermined number of the plurality of scan tasks on the scan wait queue, and (3) a set of scan tasks of a similar type on the scan wait queue. A first scan task from the plurality of scan tasks is selected from the scan task queue. The scan task is performed.
    Type: Application
    Filed: August 11, 2008
    Publication date: February 11, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael Thomas BENHASE, Susan Kay CANDELARIA, Lokesh Mohan Gupta, Kenneth Wayne Todd
  • Publication number: 20100036978
    Abstract: A method of packaging locate record commands for device command word (DCW) processing is provided. A first locate record command is packaged into DCW prefix parameter data. The first locate record command includes first search and first seek arguments, a first intent count argument, a first transfer length factor argument, and a plurality of remaining arguments. A plurality of truncated locate record commands is embedded in the DCW prefix parameter data as concatenations to the first locate record command. Each of the plurality of truncated locate record commands include a unique search argument, intent count argument, and transfer length factor argument. Seek argument parameters for each of the plurality of truncated locate record commands are calculated by taking an offset from the first seek argument and the first search argument, applying the offset to each of the plurality of truncated locate record commands. The plurality of remaining arguments is shared.
    Type: Application
    Filed: August 11, 2008
    Publication date: February 11, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Susan Kay CANDELARIA, Matthew Joseph KALOS, Beth Ann PETERSON
  • Publication number: 20090177676
    Abstract: An apparatus, system, and method are disclosed for storing and retrieving compressed data. A compression module compresses a data file organized in logical tracks. A ratio module determines a track compression ratio. The track compression ratio is a ratio of an integer value n to one. A destage module destages a single directory entry for the data file to a directory. The directory entry points to a zeroth track on a hard disk drive. The destage module further destages the data file sequentially to tracks of the hard disk drive from the zeroth track with n logical tracks of the data file stored on one physical track of the hard disk drive. A stage module stages a kth logical track from a physical track of the hard disk drive. The physical track is specified by an integer value of k divided by n.
    Type: Application
    Filed: January 3, 2008
    Publication date: July 9, 2009
    Inventors: Michael Thomas Benhase, Susan Kay Candelaria, Yu-Cheng Hsu, Minh-Ngoc Le Huynh
  • Patent number: 7251753
    Abstract: An apparatus, method, and system associates an identifier with a data packet. The identifier uniquely identifies a communication module, such as a host interface card, within a data storage system. In operation, a computer host sends a data packet to a server. The communication module receives the data packet and associates an identifier, unique to the communication module, with the data packet. The data packet is stored in a disk array, such as a Redundant Array of Independent Disks (RAID) system. When the computer host later requests the stored data packet, a validation module, which may be implemented within a PCI adapter such as a host interface card, retrieves the data packet and determines whether the data packet is corrupt. If the data packet is corrupt, the validation module identifies which host interface card corrupted the data with the use of the unique identifier associated with the data packet. The faulty communication module may then be removed from operation in the data storage system.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: July 31, 2007
    Assignee: International Business Machines Corporation
    Inventors: Michael Thomas Benhase, Susan Kay Candelaria, Paul Matthew Richards, Brian Anthony Rinaldi
  • Patent number: 5815656
    Abstract: A data processing system executes a plurality of processes in parallel. The processes access shared user records stored in memory serially. One or more data structures are used to track access by processes to the data structures and to the user records. Responsive to a fault occurring in a first parallel process, a signal is given the remaining parallel processes indicating the failure. Responsive to the failure, it is determined if the faulting parallel process had access to one of the data structures. Depending upon the circumstances of access, integrity of the user records may be assumed and the record validated. The data structures themselves can be examined to determine if the contents of memory is reliable. Typically the data structures support use of the memory as a cache.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: September 29, 1998
    Assignee: International Business Machines Corporation
    Inventors: Susan Kay Candelaria, Michael Howard Hartung, Dennis Albert Kukula, Kenneth Wayne Lane, Vernon John Legvold, Guy Eugene Martin, John Norbert McCauley, Jr., Carol Santich Michod, Mark Albert Reid, William Lee Richardson
  • Patent number: 5721898
    Abstract: A method and system for enhancing the efficiency of communication between one or more host computers and a storage system controller during a data search within either the associated storage systems or within the storage system controller itself. A storage system controller, coupled to one or more host computers via multiple communication channels, is utilized to control access to one or more direct access storage devices. A host computer authorizes the storage system controller to search within a range of data locations within the storage system, sets an initial location from which the data search will begin, and specifies a key field argument to search for. The host computer then permits the storage system controller to independently search the authorized range of data locations within the storage system or within cache memory within the storage system controller.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: February 24, 1998
    Assignee: International Business Machines Corporation
    Inventors: Brent Cameron Beardsley, Michael Thomas Benhase, Lawrence Carter Blount, Susan Kay Candelaria, Joseph Smith Hyde
  • Patent number: 5717888
    Abstract: In a data storage system having a direct access storage device (DASD) and a cache, a cache directory has two types of directory entries. A track directory entry TDE identifies up to one DASD track of data records currently stored in cache. All records stored in a DASD track can be stored in a cache storage space allocated for the DASD track identified by the TDE. A cylinder directory entry CDE identifies a number N of records from any track in a respective cylinder of tracks. N is a positive integer less than the total number of records storable in a DASD track. From one to all of the DASD tracks in one cylinder may be identified in a CDE. The cache data storage allocation corresponding to a CDE is the same as that allocated for a TDE. Each TDE is addressed by a DASD track address of a cylinder while a CDE is addressed using a pseudo track number corresponding to a servo track in the DASD. A record cast out control for the cache includes examining the number of records destaged.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: February 10, 1998
    Assignee: International Business Machines Corporation
    Inventors: Susan Kay Candelaria, Joseph Smith Hyde, Vernon John Legvold
  • Patent number: 5694570
    Abstract: The invention teaches a system and method for temporarily buffering data written to a storage system by a host computer. The storage system includes direct access storage devices and a cache. The cache is used as the buffer for both caching and noncaching data records before destaging to a direct access storage device. Upon receipt of a channel program from a host computer containing data for records to be updated, the storage controller determines if the records are currently cached. If the records are not cached, a write miss has occurred. Upon a write miss the storage controller checks an attribute transmitted in the channel program to determine if the records have a regular format. Records having a known, regular format are buffered in cache until destaged by a background process.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: December 2, 1997
    Assignee: International Business Machines Corporation
    Inventors: Brent Cameron Beardsley, Susan Kay Candelaria, Joel Harvey Cord, Michael Howard Hartung, Joseph Smith Hyde, John Norbert McCauley, Jr.
  • Patent number: 5682513
    Abstract: A data storage system provides disaster recovery capability by asynchronously transmitting record updates to a secondary site in sequence consistent order. Such record updates are stored at a primary site in a cache memory of a storage controller. A circular queue is created having a head pointer for locating a first (or oldest) record update with subsequent record updates of a track being linked therefrom in sequence consistent order. A tail pointer of the circular queue points to the last record update. A counter field is provided in a track slot header for counting a number of updated records in the track and hence the circular queue. When a data mover in the host processor at the primary site reads record updates for transmission to the secondary site, the data mover starts with the record update pointed to by the head pointer such that the data mover moves through the circular queue (and hence the record updates) in a backward chain fashion.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: October 28, 1997
    Assignee: International Business Machines Corporation
    Inventors: Susan Kay Candelaria, Vernon John Legvold, Warren Keith Stanley