Raymond L Chen

US Patent:

7072910, Jul 4, 2006

Filed:

Mar 22, 2002

Appl. No.:

10/104694

Inventors:

Andy C. Kahn - San Francisco CA, US
Kayuri Patel - Cupertino CA, US
Raymond C. Chen - Campbell CA, US
John K. Edwards - Sunnyvale CA, US

Assignee:

Network Appliance, Inc. - Sunnyvale CA

International Classification:

G06F 17/30

US Classification:

707201, 707204, 707202, 707200, 707100, 707 1

Abstract:

A file folding technique reduces the number of duplicate data blocks of a file consumed on a storage device of a file server configured to generate a persistent image of its active file system at a point in time. According to the file folding technique, if “old” data blocks of the file are over-written with “new” data and that new data is identical to the data of the persistent file image, the old data blocks are “freed” and the file is directed to refer to the persistent image for its data. The invention reduces disk space consumption in a file server configured to generate persistent images of its active file system and, in particular, reduces overall persistent image disk usage.

US Patent:

7386546, Jun 10, 2008

Filed:

Jul 9, 2002

Appl. No.:

10/191705

Inventors:

Douglas J. Santry - San Francisco CA, US
Raymond C. Chen - Campbell CA, US

Assignee:

Network Appliance, Inc. - Sunnyvale CA

International Classification:

G06F 17/30

US Classification:

707 6, 707 4, 707 5, 707 3

Abstract:

A metadirectory namespace is provided for storing files and directories “hidden” from one or more user-accessible namespaces. The metadirectory namespace is a separate, parallel namespace that coexists with other user-accessible namespaces in a storage operating system. Files and directories may be identified as being stored in a metadirectory based on their location or based on their associated flags. The metadirectory namespace may be selectively exported only to clients, users and applications given special file access permissions.

US Patent:

7444361, Oct 28, 2008

Filed:

Mar 28, 2006

Appl. No.:

11/393543

Inventors:

Andy C. Kahn - San Francisco CA, US
Kayuri Patel - Cupertino CA, US
Raymond C. Chen - Campbell CA, US
John K. Edwards - Sunnyvale CA, US

Assignee:

Network Appliance, Inc. - Sunnyvale CA

International Classification:

G06F 17/30

US Classification:

707201, 707204, 707101

Abstract:

A method for reducing duplicate data of an active file system, where the data is stored on a storage device of a storage system, is disclosed. A persistent image of the active file system is generated at a first point in time. At a later time, a sequence of steps to compare the active file system with the persistent image is initiated. Then, if a block of data of the active file system is identical to the data in the persistent image, the active file system is directed to refer to the persistent image for data of the file. Alternatively, if the block of data of the active file system is not identical to the data in the persistent image, the active file system is directed to refer to the data of the active file system. A file folding command may be issued to start the comparison.

US Patent:

7506213, Mar 17, 2009

Filed:

Jan 19, 2006

Appl. No.:

11/336168

Inventors:

George Cabrera, III - San Francisco CA, US
Raymond C. Chen - Campbell CA, US
Paul C. Eastham - Mountain View CA, US
Sreelatha Reddy - Sunnyvale CA, US

Assignee:

Network Appliance, Inc. - Sunnyvale CA

International Classification:

G06F 11/00

US Classification:

714 42, 714 4, 714 7, 714 26

Abstract:

A method for handling a fault in a storage system comprises maintaining data in a mass storage subsystem and providing access to the data on behalf of a client. The method further comprises detecting a fault in a volume of data stored in the mass storage subsystem, determining a severity of the fault, and selecting a course of action in response to the fault, based on the severity of the fault.

US Patent:

7613724, Nov 3, 2009

Filed:

Sep 26, 2007

Appl. No.:

11/861863

Inventors:

Douglas J. Santry - San Francisco CA, US
Raymond C. Chen - Campbell CA, US

Assignee:

NetApp, Inc. - Sunnyvale CA

International Classification:

G06F 17/00

US Classification:

707102, 707100, 707101, 7071041

Abstract:

A metadirectory namespace is provided for storing files and directories “hidden” from one or more user-accessible namespaces. The metadirectory namespace is a separate, parallel namespace that coexists with other user-accessible namespaces in a storage operating system. Files and directories may be identified as being stored in a metadirectory based on their location or based on their associated flags. The metadirectory namespace may be selectively exported only to clients, users and applications given special file access permissions.

US Patent:

7979416, Jul 12, 2011

Filed:

Sep 22, 2009

Appl. No.:

12/564295

Inventors:

Douglas J. Santry - San Francisco CA, US
Raymond C. Chen - Campbell CA, US

Assignee:

NetApp, Inc. - Sunnyvale CA

International Classification:

G06F 17/00

US Classification:

707706, 707711, 707716, 707726, 707741

Abstract:

A data storage system is disclosed. A flag is maintained in metadata pointing to a block of data. A first value of the flag indicates that the block of data is stored in a user accessible file. A second value of the flag indicates that the block of data is stored in a protected file. The flag pointing to the requested data block is checked upon receipt of a data access request. When the flag has the first value the data access request is permitted. When the flag has the second value, an access control list is checked, and if the requesting client is listed in the access control list permitting the data access request, and if the requesting client is not listed in the access control list denying the data access request.

US Patent:

54747643, Dec 12, 1995

Filed:

May 24, 1994

Appl. No.:

8/248865

Inventors:

Rajesh Patel - San Mateo CA
Lyle Bowman - Pleasanton CA
Margarita Vildaver - Napa CA
Raymond Chen - Union City CA

Assignee:

InSite Vision Incorporated - Alameda CA

International Classification:

A61K 3174
A61K 950

US Classification:

424 7804

Abstract:

Topical ophthalmic medicament delivery system combining an aqueous ophthalmic gel suspension at a pH equal to or greater than 7. 5 and an osmotic pressure of from 10 to about 400 mOsM containing a pharmaceutically effective mount of one or more ophthalmic medicaments of from about 0. 05% to about 10% by weight, based on the total weight of the suspension, of a carboxyl-containing polymer prepared by polymerizing one or more carboxyl-containing monoethylenically unsaturated monomers and less then about 5% by weight of a cross-linking agent. The systems have a viscosity of from about 1,000 to about 30,000 centiposes prior to administration to the eye and remain a gel in the eye for a prolonged period of time allowing for the sustained release of one or medicaments such as amine containing antibiotics alone or in combination with cortiscosteroids.

US Patent:

53405722, Aug 23, 1994

Filed:

Feb 8, 1993

Appl. No.:

8/014512

Inventors:

Rajesh Patel - San Mateo CA
Lyle Bowman - Pleasanton CA
Margarita Vildaver - Napa CA
Raymond Chen - Union City CA

Assignee:

Insite Vision Incorporated - Alameda CA

International Classification:

A61K 3174
A61K 914
A61F 214

US Classification:

424 7804

Abstract:

Topical ophthalmic medicament delivery system combining an aqueous ophthalmic gel suspension at a pH equal to or greater than 7. 5 and an osmotic pressure of from 10 to about 400 mOsM containing a pharmaceutically effective amount of one or more ophthalmic medicaments of from about 0. 05% to about 10% by weight, based on the total weight of the suspension, of a carboxyl-containing polymer prepared by polymerizing one or more carboxyl-containing monoethylenically unsaturated monomers and less then about 5% by weight of a cross-linking agent. The systems have a viscosity of from about 1,000 to about 30,000 centiposes prior to administration to the eye and remain a gel in the eye for a prolonged period of time allowing for the sustained release of one or medicaments such as amine containing antibiotics alone or in combination with cortiscosteroids.