Peter T Tsai

US Patent:

20050015471, Jan 20, 2005

Filed:

Jul 18, 2003

Appl. No.:

10/622596

Inventors:

Pu Zhang - San Jose CA, US
Duc Pham - Cupertino CA, US
Tien Nguyen - Cupertino CA, US
Peter Tsai - Pleasanton CA, US

International Classification:

G06F015/177

US Classification:

709221000, 713201000

Abstract:

Communications between server computer systems of a cluster routinely exchange notice of configuration status and, on demand, transmit updated configuration data sets. Each status message identifies any change in the local configuration of a servers and, further, includes encrypted validation data. Each of the servers stores respective configuration data including respective sets of data identifying the servers known to the respective servers as participating in the cluster. Each status message, as received, is validating against the respective configuration data stored by the receiving server. A status message is determined valid only when originating from a server as known by the receiving server, as determined from the configuration data held by the receiving server. Where a validated originating server identifies updated configuration data, the receiving server requests a copy of the updated configuration data set, which must also be validated, to equivalently modify the locally held configuration data. The configuration of the cluster thus converges on the updated configuration.

US Patent:

20050027862, Feb 3, 2005

Filed:

Jul 18, 2003

Appl. No.:

10/622404

Inventors:

Tien Nguyen - Cupertino CA, US
Duc Pham - Cupertino CA, US
Pu Zhang - San Jose CA, US
Peter Tsai - Pleasanton CA, US

International Classification:

G06F015/173

US Classification:

709225000

Abstract:

Host computer systems dynamically engage in independent transactions with servers of a server cluster to request performance of a network service, preferably a policy-based transfer processing of data. The host computer systems operate from an identification of the servers in the cluster to autonomously select servers for transactions qualified on server performance information gathered in prior transactions. Server performance information may include load and weight values that reflect the performance status of the selected server and a server localized policy evaluation of service request attribute information provided in conjunction with the service request. The load selection of specific servers for individual transactions is balanced implicitly through the cooperation of the host computer systems and servers of the server cluster.

US Patent:

20190097789, Mar 28, 2019

Filed:

Aug 22, 2018

Appl. No.:

16/109501

Inventors:

- San Jose CA, US
Masoud Sadrolashrafi - San Jose CA, US
Peter Tsai - San Jose CA, US

International Classification:

H04L 9/06
G06F 21/62
G06F 17/30

Abstract:

A method for managing keys and encrypting data is provided. The method includes receiving data to be written to a logical disk, generating an encryption table indicating one or more locations on the logical disk for storing the data and indicating a key used for encrypting the data, encrypting the data to be written to the logical disk, and transmitting the encrypted data and the encryption table to a storage array.