Resumes
Resumes
Kiyokazu Saigo Phones & Addresses
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3507 Palmilla Dr, San Jose, CA 95134
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Santa Clara, CA
Publications
Us Patents
Initial Copyless Remote Copy
View pageUS Patent:
20100049823, Feb 25, 2010
Filed:
Aug 21, 2008
Appl. No.:
12/222976
Inventors:
Kiyokazu Saigo - San Jose CA, US
Tomohiro Kawaguchi - Cupertino CA, US
Tomohiro Kawaguchi - Cupertino CA, US
International Classification:
G06F 15/167
US Classification:
709216
Abstract:
Embodiments of the invention reduce the traffic between datacenters during initial remote copy. In one embodiment, a computer system comprises a first datacenter including a first source volume and a second datacenter including a second source volume. Prior to establishment of remote copy of deployed volumes between the first datacenter and the second datacenter, the first source volume of the first datacenter and the second source volume of the second datacenter have identical source objects. During establishment of remote copy, the first datacenter replicates the source object in the first source volume to a first target volume, the second datacenter replicates the source object in the second source volume to a second target volume, and a first replicated object in the first target volume and a second replicated object in the second target volume are related to each other by remote copy with no copying therebetween.
Method And Apparatus For Unstructured Data Mining And Distributed Processing
View pageUS Patent:
20100228723, Sep 9, 2010
Filed:
Feb 26, 2009
Appl. No.:
12/393721
Inventors:
Kiyokazu Saigo - San Jose CA, US
Hidehisa Shitomi - Kanagawa, JP
Hidehisa Shitomi - Kanagawa, JP
Assignee:
HITACHI, LTD. - Tokyo
International Classification:
G06F 17/30
G06F 7/00
G06F 7/00
US Classification:
707722, 707E17108
Abstract:
A sort server including a central processing unit, a memory and a network interface configured to interconnect the sort server with a search server, at least one storage system and multiple processing servers using at least one network. The sort server is configured to receive a search result from the search server and to assign multiple tasks to the processing servers. The assignment of the multiple tasks is based on a condition including the search result. Assignment of the tasks to servers may be based on CPU load of at least some of the multiple servers, network architecture, network distance between the servers and the storage system storing the required object, failure information, urgency of the task, Level Agreement associated with the servers and other tasks performed by the servers.
Method And Apparatus For Contents De-Duplication
View pageUS Patent:
20100250502, Sep 30, 2010
Filed:
Mar 27, 2009
Appl. No.:
12/412771
Inventors:
Kiyokazu SAIGO - San Jose CA, US
International Classification:
G06F 17/30
G06Q 30/00
G06Q 50/00
G06Q 30/00
G06Q 50/00
US Classification:
707692, 705 34, 707E17005, 707E17014, 707E17032
Abstract:
Exemplary embodiments provide in effect data de-duplication in storage servers without the need to compare every byte of stored data. In one embodiment, a method for providing contents from a content device to a storage device comprises receiving by a storage device a ticket including trade information of a trade by a user for content from a content device; receiving by the storage device from the content device attribute information of the content identified in the ticket; determining whether the storage device has the content identified in the ticket based on the attribute information; if the storage device does not have the content identified in the ticket, receiving the content identified in the ticket from the content device and storing the content in the storage device; and if the storage device has the content identified in the ticket, not receiving the content identified in the ticket from the content device.