Robert M Morton

Author:

Robert A. Morton

ISBN #:

0080327842

Author:

Robert A. Morton

ISBN #:

0716788268

Author:

Robert A. Morton

ISBN #:

0716797747

Author:

Robert A. Morton

ISBN #:

0822305003

Author:

Robert A. Morton

ISBN #:

0822304996

Author:

Robert Steel Morton

ISBN #:

0140208194

Author:

Robert Steel Morton

ISBN #:

0721665632

Author:

Robert Morton

ISBN #:

0307156060

US Patent:

6393535, May 21, 2002

Filed:

May 2, 2000

Appl. No.:

09/562685

Inventors:

David Alan Burton - Vail AZ
Robert Louis Morton - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1202

US Classification:

711158, 711154

Abstract:

Disclosed is a method, system, program, and data structure for defining paths for a computer to use to send commands to execute with respect to storage regions in a storage device that are accessible through at least two controllers. For each storage region, one controller is designated as a preferred controller and another as a non-preferred controller. The computer initially sends a command to be executed with respect to a target storage region to the preferred controller for the target storage region and sends the command to the non-preferred controller for the target storage region if the preferred controller cannot execute the command against the target storage region. In response to the non-preferred controller receiving at least one command for the target storage region, the designation is modified to make a current preferred controller the non-preferred controller for the target storage region and a current non-preferred controller the preferred controller for the target storage region.

US Patent:

6425051, Jul 23, 2002

Filed:

Sep 25, 2000

Appl. No.:

09/669782

Inventors:

David Alan Burton - Vail AZ
Robert Louis Morton - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1200

US Classification:

711113, 711112, 703 23, 712 32

Abstract:

Provided are a system, method, program, and data structure for processing a request for data in a first format that is superimposed on blocks of data stored in a second format in a storage device. A data structure for a storage unit in the first format including the requested data is accessed. There is one data structure for each storage unit in the first format being accessed. Further, at least one cache page storing blocks of data in the second format is needed to store one storage unit in the first format. A determination is made of one or more storage blocks in the second format that include the requested data. A determination is also made as to whether the storage unit data structure includes a pointer to a control block for a cache page that would include the determined storage blocks in the second format. The determined pointer and a request for the determined storage blocks is transferred to a component that is capable of accessing storage blocks in the second format in cache using the control block if the storage unit data structure includes a pointer to the control block.

US Patent:

6526419, Feb 25, 2003

Filed:

Jun 9, 2000

Appl. No.:

09/591016

Inventors:

David Alan Burton - Vail AZ
Robert Louis Morton - Tucson AZ
Erez Webman - Petach-Tikva, IL

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1730

US Classification:

707204, 707202, 707203

Abstract:

Disclosed is a method, system, program, and data structure for providing a shadow copy of data storage areas in a primary site to data storage areas in a secondary site. A definition is made of storage areas in the primary site having data to be shadowed and corresponding storage areas in the secondary site to shadow data at the storage areas in the primary site. A shadow pair comprises one primary storage area and one secondary storage area that shadows data for the primary storage area in the pair. A standard data transfer interface protocol command, such as a SCSI or Fibre Channel command, is used to configure status storage areas in the secondary site to provide status information and data for each primary and secondary storage area. A write command in the standard data transfer interface protocol is then used to write status information to the status storage areas indicating status of the shadowed data at the secondary storage areas in the pairs.

US Patent:

6601128, Jul 29, 2003

Filed:

May 2, 2000

Appl. No.:

09/561639

Inventors:

David Alan Burton - Vail AZ
Robert Louis Morton - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1202

US Classification:

710316, 710 36, 711112

Abstract:

Disclosed is a method, system, program, and data structure for selecting a path to one of at least two controllers. Each controller is capable of providing access to storage areas, such as Logical Unit Numbers (LUNs). Path information is received from the controllers indicating a preferred controller to use to access each storage area. An input/output (I/O) command directed to a target storage area is processed and the I/O command is directed to the controller indicated in the path information as the preferred controller for the target storage area. The controller receiving the I/O command executes the I/O command against the target storage area. The path information to the storage controllers providing access to the storage areas is encoded with information designating one controller as the preferred controller and another as a non-preferred controller. The encoded path information is returned to a requesting computer. The requesting computer initially sends an input/output (I/O) command to the preferred controller and sends the I/O command to the non-preferred controller if the preferred controller cannot execute the I/O command.

US Patent:

6618798, Sep 9, 2003

Filed:

Jul 11, 2000

Appl. No.:

09/613681

Inventors:

David Alan Burton - Vail AZ
Robert Louis Morton - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1200

US Classification:

711202, 711114, 711112, 714 7, 714 3

Abstract:

Disclosed is a method, system, program, and data structures for mapping logical units, such as logical unit numbers (LUNs), to a storage space comprised of at least one array of storage units, e. g. , hard disk drives. Configuration information stored in one array indicating a first mapping of logical units to storage locations in the array is read. A second mapping of logical units to storage locations in multiple arrays is generated using the configuration information read from the array. Each logical unit is assigned to only one of the arrays.

US Patent:

6633962, Oct 14, 2003

Filed:

Mar 21, 2000

Appl. No.:

09/531932

Inventors:

David Alan Burton - Vail AZ
Robert Louis Morton - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1200

US Classification:

711163, 711170, 711152

Abstract:

A method, system, program, and data structure for restricting host access to at least one logical device. Each logical device comprises a section of physical storage space that is non-overlapping with the physical storage space associated with other logical devices. At least one logical device and at least one host are assigned to a cluster group. A cluster group is defined such that hosts that are not in a particular cluster group cannot access the logical devices that are assigned to the cluster group. Further, within each cluster group, a logical number is assigned to each logical device in the cluster group such that no host member of that cluster group uses the assigned logical number to access another logical device. The hosts in the cluster group use the logical number to access the logical device to which the logical number is assigned.

US Patent:

6651154, Nov 18, 2003

Filed:

Jul 11, 2000

Appl. No.:

09/614074

Inventors:

David Alan Burton - Vail AZ
Robert Louis Morton - Tucson AZ

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1100

US Classification:

711202, 711112, 711114, 711111

Abstract:

Implementations describe the expansion of storage space in an array of storage units. The storage space formed by the storage units is configured as logical units to store data. Storage units are added to the array to form an expanded storage space. The storage units in the array prior to the addition of the storage units are in a pre-expansion storage space. At least one additional logical unit is configured in the expanded storage space such that the logical units existing prior to the addition of the storage units in the pre-expansion storage space are not affected by the logical units configured in the expanded storage space.

US Patent:

6715036, Mar 30, 2004

Filed:

Aug 1, 2000

Appl. No.:

09/628394

Inventors:

David Alan Burton - Vail AZ
Norio Fujita - Shiga-Ken, JP
Robert Louis Morton - Tucson AZ
Koji Nakase - Kanagawa, JP

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1200

US Classification:

711118, 711112, 711159, 714 6, 714 52, 714 53

Abstract:

Disclosed is a method, system, program, and data structures for transferring data to a requesting application. A request is received for one or more blocks of data at contiguous addresses in a storage device. Each block of data includes customer data and metadata indicating the address of the block in the storage device and an error checking code that is capable of being used to determine whether the customer data in the block has changed. For each requested block, a determination is made as to whether the address of the block of data in the metadata and the requested address match. Further, for each requested block, an operation is performed on the customer data in the block and the error checking code to determine whether the customer data has changed. The requested block is transferred to the requesting application if the address of the block in the metadata and requested address match and the customer data has not changed.