Said A Ahmad, Age 578188 W Circulo De Los Morteros, Tucson, AZ 85743

7500064, Mar 3, 2009

Dec 3, 2007

11/949458

Said A. Ahmad - Tucson AZ, US
Michael T. Benhase - Tucson AZ, US
William D. Williams - Tucson AZ, US

International Business Machines Corporation - Armonk NY

G06F 12/00
G06F 13/00
G06F 13/28
G06F 15/177
G06F 17/30

711141, 711144, 711145, 707201, 707203, 713 2, 709222

A data coherence system includes a generation number written to a data track of a logical sub-system. The generation number is compared to a corresponding generation number in a processing device when it is initialized. If the two generations numbers are the same, the generation numbers are incremented and saved. If not, cache associated with the logical sub-system residing within the processing device is erased and the generation numbers are reset.

7546412, Jun 9, 2009

Dec 2, 2005

11/292646

Said Abdullah Ahmad - Tucson AZ, US
Rhea Reyes Frondozo - Tucson AZ, US
Kurt Allen Lovrien - Tucson AZ, US
Jacob Lee Sheppard - Gilbert AZ, US

International Business Machines Corporation - Armonk NY

G06F 12/00

711112, 711156, 711165, 711161, 711162, 714 6

An apparatus, system, and method are disclosed for global metadata copy repair. The apparatus includes a control module for copying global metadata from primary storage to target storage, a verification module configured to identify invalid track in the global metadata, a location module configured to maintain a current read address, and a read module configured to find a valid copy of the invalid track. The system includes a plurality of hosts, a storage controller in communication with the plurality of hosts over a network, a primary storage device, a target storage device, and the apparatus. The method includes copying global metadata from a primary storage device to a target storage device, identifying invalid track in the global metadata of the primary storage device, maintaining a current read address of a buffer read, and finding a valid copy of the invalid track.

8229972, Jul 24, 2012

Aug 28, 2009

12/550305

Said Abdullah Ahmad - Tucson AZ, US
Shawn Owen Brume - Tucson AZ, US

International Business Machines Corporation - Armonk NY

G06F 17/30

707802

In one embodiment, an extended data storage system employs a first data storage and an extended data storage. A first level of metadata is established with respect to data from the using entity, the first level of metadata is provided in the first data storage. The data from the using entity is stored in the extended data storage. A second level of metadata at least describing the data as stored in the extended data storage is also established, wherein the second level of metadata associated with the first level of metadata for the stored data. The first level of metadata is made accessible to the using entity at the first data storage; and the second level of metadata is made unavailable to the using entity. Thus, the data is stored in the extended data storage and a small amount of metadata is stored in the first data storage.

8244695, Aug 14, 2012

Sep 1, 2006

11/469811

Said Abdullah Ahmad - Tucson AZ, US
Michael Thomas Benhase - Tucson AZ, US
David Frank Mannenbach - Tucson AZ, US
Tim Stephen Vande Zande - Tucson AZ, US

International Business Machines Corporation - Armonk NY

G06F 7/00
G06F 17/30

707695, 714 2

Provided are a method, system, and article of manufacture for validating stored copies of data images to load into memory. An image of data is maintained in a memory, wherein the image in the memory includes a generation number. The image in the memory is written to at least two copies of the image to storage locations in response to a first event, wherein the generation number for the image in the memory is stored in the storage locations having the copies of the image. A check generation number is stored in a storage location. The image is loaded from at least one of the copies of the image in one of the storage locations to the memory in response to a second event. The generation number for the image loaded into the memory. The check generation number is incremented in response to the second event. The generation numbers for the copies of the image in the storage locations and the check generation number are used to validate the copies of the image.

8468176, Jun 18, 2013

May 22, 2012

13/478032

Said Abdullah Ahmad - Tucson AZ, US
Shawn Owen Brume - Tucson AZ, US

International Business Machines Corporation - Armonk NY

G06F 17/30

707802

In one embodiment, an extended data storage system employs a first data storage and an extended data storage. A first level of metadata is established with respect to data from the using entity, the first level of metadata is provided in the first data storage. The data from the using entity is stored in the extended data storage. A second level of metadata at least describing the data as stored in the extended data storage is also established, wherein the second level of metadata associated with the first level of metadata for the stored data. The first level of metadata is made accessible to the using entity at the first data storage; and the second level of metadata is made unavailable to the using entity. Thus, the data is stored in the extended data storage and a small amount of metadata is stored in the first data storage.

8521707, Aug 27, 2013

Apr 11, 2012

13/444378

Said Abdullah Ahmad - Tucson AZ, US
Michael Thomas Benhase - Tucson AZ, US
David Frank Mannenbach - Tucson AZ, US
Tim Stephen Vande Zande - Tucson AZ, US

International Business Machines Corporation - Armonk NY

G06F 7/00
G06F 17/00

707695, 707690, 714 2

Provided are a method, system, and article of manufacture for validating stored copies of data images to load into memory. An image of data is maintained in a memory, wherein the image in the memory includes a generation number. The image in the memory is written to at least two copies of the image to storage locations in response to a first event, wherein the generation number for the image in the memory is stored in the storage locations having the copies of the image. A check generation number is stored in a storage location. The image is loaded from at least one of the copies of the image in one of the storage locations to the memory in response to a second event The generation number for the image loaded into the memory. The check generation number is incremented in response to the second event. The generation numbers for the copies of the image in the storage locations and the check generation number are used to validate the copies of the image.

2006010, May 18, 2006

Nov 15, 2004

10/989999

Said Ahmad - Tucson AZ, US
Thomas Jarvis - Tucson AZ, US
Kenneth Todd - Tucson AZ, US

G06F 12/14

711150000

Provided are a method, system and program for updating data shared among systems. A first and second systems maintain a first and second copies, respectively, of shared data stored in a storage device. The first system obtains a first lock to the shared data, wherein the first lock applies to the first system accessing the shared data. The first system sends to the second system a first message requesting a second lock to the shared data, wherein the second lock applies to the second system accessing the shared data; The second system obtains the second lock to the shared data for the first system in response to the first message sends to the first system a second message indicating the second lock to the shared data was granted.

2006016, Jul 27, 2006

Jan 21, 2005

11/040463

Said Ahmad - Tucson AZ, US
Michael Benhase - Tucson AZ, US
William Williams - Tucson AZ, US

G06F 13/28

711141000

A data coherence system includes a generation number written to a data track of a logical sub-system. The generation number is compared to a corresponding generation number in a processing device when it is initialized. If the two generations numbers are the same, the generation numbers are incremented and saved. If not, cache associated with the logical sub-system residing within the processing device is erased and the generation numbers are reset.