Ayman M Abouelwafa

US Patent:

7805566, Sep 28, 2010

Filed:

Mar 29, 2007

Appl. No.:

11/729488

Inventors:

Ayman Abouelwafa - Folsom CA, US
Robert A. Cochran - Sacramento CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 12/00

US Classification:

711114, 711111, 711162, 711E12001, 709239, 703 25

Abstract:

Embodiments include methods, apparatus, and systems for replication in storage systems. One embodiment includes a method that uses a target port on a storage array to function as an initiator port on a host in a storage area network (SAN). The target port discovers storage arrays in the SAN and mimics an initiator port to transmit input/output (I/O) requests.

US Patent:

7934069, Apr 26, 2011

Filed:

Apr 27, 2007

Appl. No.:

11/796428

Inventors:

Robert A Cochran - Sacramento CA, US
Erik A. Lipps - Sacremento CA, US
Ayman Abouelwafa - Folsom CA, US

Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX

International Classification:

G06F 12/02

US Classification:

711167, 711E12002

Abstract:

Embodiments include methods, apparatus, and systems for enabling and disabling cache in storage systems. One embodiment includes a method that changes a time period for delaying host requests received at a cache of a storage device and converts the storage device from a cache enabled state to a cache disabled state while the storage device is online.

US Patent:

20080250209, Oct 9, 2008

Filed:

Apr 4, 2007

Appl. No.:

11/732621

Inventors:

Ayman Abouelwafa - Roseville CA, US

International Classification:

G06F 12/00

US Classification:

711137

Abstract:

In some embodiments, a storage device, comprises a processor, a memory module communicatively connected to the processor, and logic instructions in the memory module which, when executed by the processor, configure the processor to receive a read input/output operation, and configure a prefetch disk data into cache memory in response to a prefetch tag embedded in the read input/output operation.

US Patent:

20080270719, Oct 30, 2008

Filed:

Apr 30, 2007

Appl. No.:

11/799267

Inventors:

Robert A. Cochran - Sacramento CA, US
Ayman Abouelwafa - Folsom CA, US

International Classification:

G06F 12/00

US Classification:

711162

Abstract:

Embodiments of the present invention are directed to efficient snapshot operations that produce multiple, useable snapshot logical units when successively directed to a logical unit, and to mass-storage arrays that support such efficient snapshot operations. In one embodiment of the present invention, allocate-on-write techniques are employed for handling WRITE access operations directed to storage-allocation units not yet overwritten following a snapshot operation. The allocate-on-WRITE technique is enhanced by a background process that continuously defragments the logical-storage-allocation-unit address space referenced by the original logical unit.

US Patent:

20110302337, Dec 8, 2011

Filed:

Jun 4, 2010

Appl. No.:

12/794594

Inventors:

Kishore Kumar Muppirala - Bangalore, IN
Satish Kumar Mopur - Bangalore, IN
Sumanesh Samanta - Bangalore, IN
Dinkar Sitaram - Bangalore, IN
Ayman Abouelwafa - Folsom CA, US
Mustafa Uysal - Fremont CA, US
Arif Merchant - Los Altos CA, US

International Classification:

G06F 3/00

US Classification:

710 38

Abstract:

Systems and methods for path selection for application commands are described. To this end, information associated with at least one application command that were processed at least one port of a target device is received. For a subsequent application command, a set of ports of the target device is determined. In one implementation, the set of ports is determined based on information associated with the subsequent application command. Once the set of ports is determined, the subsequent application command is directed to a port selected from the set of ports.

US Patent:

20110314182, Dec 22, 2011

Filed:

Jun 21, 2010

Appl. No.:

12/819312

Inventors:

Kishore Kumar Muppirala - Bangalore, IN
Satish Kumar Mopur - Bangalore, IN
Dinkar Sitaram - Bangalore, IN
Sumanesh Samanta - Bangalore, IN
Ayman Abouelwafa - Folsom CA, US

International Classification:

G06F 13/00

US Classification:

710 5

Abstract:

A method generates input/output (IO) commands by plural different applications that execute on a host. The method prioritizes the applications by inserting different classifiers into the IO commands at a host bus adapter (HBA) located in the host. A storage device receives the IO commands and processes the IO commands according to priorities based on the classifiers for the applications.

US Patent:

20130179890, Jul 11, 2013

Filed:

Jan 10, 2012

Appl. No.:

13/346933

Inventors:

SATISH KUMAR MOPUR - Bangalore, IN
Ayman Abouelwafa - Folsom CA, US
Manasij Mandi - Kolkata, IN
Aswin Jayaraman - Bangalore, IN
Sijesh T. Balakrishnan - Bangalore, IN

International Classification:

G06F 9/46

US Classification:

718102

Abstract:

Utilization of the processor modules is monitored. A varying load pattern including at least one of a bursty behavior or an oscillatory behavior of the processor modules is identified. Distribution of logical devices between processor modules is performed.

US Patent:

20230049823, Feb 16, 2023

Filed:

Aug 10, 2021

Appl. No.:

17/444776

Inventors:

- Houston TX, US
Ayman Abouelwafa - Roseville CA, US

International Classification:

G06F 3/06

Abstract:

In some examples, a system detects recovery, from an unavailable state, of a communication link between a first storage system that includes a first storage volume and a second storage system that includes a second storage volume that is to be a synchronized version of the first storage volume, where while the communication link is in the unavailable state the second storage volume is in an offline state and the first storage volume is in an online state. In response to detecting the recovery of the communication link, the system sends a first tracking metadata for the first storage volume from the first storage system to the second storage system, and in response to receipt of the first tracking metadata at the second storage system that maintains a second tracking metadata for the second storage volume, the system transitions the second storage volume from the offline state to a controlled online state, and initiates a synchronization process to synchronize the second storage volume with the first storage volume.