Nathaniel D Roberts

US Patent:

8055615, Nov 8, 2011

Filed:

Aug 25, 2009

Appl. No.:

12/547409

Inventors:

Nathaniel David Roberts - Ogden IL, US
Jeanie Zhiling Zheng - Champaign IL, US
Chung Hae Sohn - Champaign IL, US
Kihwal Lee - Champaign IL, US
John Vijoe George - Champaign IL, US

Assignee:

Yahoo! Inc. - Sunnyvale CA

International Classification:

G06F 17/00

US Classification:

707610, 707611, 707616, 707626, 707633, 707634

Abstract:

Methods and apparatus are described for a horizontally scalable high performance object storage architecture. Metadata are completely decoupled from object storage. Instead of file names, users are given a locator when the object is uploaded and committed. Users can store the locator along with their own metadata or embed it directly in the static content. Clients can choose which storage nodes to store data on based on dynamic measures of node performance. Since there is no coupling among storage servers, performance can scale horizontally by adding more nodes. The decoupling also allows the front end services and storage to scale independently. High service availability is achieved by object-level synchronous replication and having no single point of failure. Failed nodes are rebuilt using copies of data in other nodes without taking the cluster offline. In addition to the replication, the ability to add or remove nodes on-line reduces maintenance-related service downtime.

US Patent:

20110055494, Mar 3, 2011

Filed:

Aug 25, 2009

Appl. No.:

12/547413

Inventors:

Nathaniel David Roberts - Ogden IL, US
Jeanie Zhiling Zheng - Champaign IL, US
Chung Hae Sohn - Champaign IL, US
Kihwal Lee - Champaign IL, US
John Vijoe George - Champaign IL, US
Charles Joseph Neerdaels - Capitola CA, US

Assignee:

YAHOO! INC. - Sunnyvale CA

International Classification:

G06F 12/00

US Classification:

711154, 711E12001

Abstract:

Methods and apparatus are described for a horizontally scalable high performance object storage architecture. Metadata are completely decoupled from object storage. Instead of file names, users are given a locator when the object is uploaded and committed. Users can store the locator along with their own metadata or embed it directly in the static content. Clients can choose which storage nodes to store data on based on dynamic measures of node performance. Since there is no coupling among storage servers, performance can scale horizontally by adding more nodes. The decoupling also allows the front end services and storage to scale independently. High service availability is achieved by object-level synchronous replication and having no single point of failure. Failed nodes are rebuilt using copies of data in other nodes without taking the cluster offline. In addition to the replication, the ability to add or remove nodes on-line reduces maintenance-related service downtime.

US Patent:

61415642, Oct 31, 2000

Filed:

Sep 30, 1999

Appl. No.:

9/409359

Inventors:

John David Bruner - Barrington IL
Eric Edward Payne - Urbana IL
Richard Allen Pace - Champaign IL
Nathaniel David Roberts - Urbana IL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04B 138

US Classification:

455558

Abstract:

Method and apparatus for sharing a SIM card between two masters. The invention may be embodied in so-called multi-mode radiotelephones that use SIM cards to store and access information. The multi-mode radiotelephone includes at least two master components and a single SIM card. The method and apparatus synchronizes and coordinates communications from either master component directly to the SIM card, thereby allowing a single SIM card to directly service two master components.