James Thomas Voll

US Patent:

7200603, Apr 3, 2007

Filed:

Jan 8, 2004

Appl. No.:

10/755020

Inventors:

David Hitz - Los Altos CA, US
Mehul S. Shah - Milpitas CA, US
Daniel W. Ting - Palo Alto CA, US
James J. Voll - Palo Alto CA, US

Assignee:

Network Appliance, Inc. - Sunnyvale CA

International Classification:

G06F 17/00
G06F 17/30
G06F 13/12
G06K 9/36
H04K 1/00

US Classification:

707101, 707 1, 707 10, 7071041, 707205, 382232, 710 68, 380269

Abstract:

In a technique for compressing data, a data storage server receives a set of data, which includes a first number of subsets. The storage server defines a number of compression groups for the set of data, each compression group including multiple entries, each entry containing a pointer to a different subset of the set of data. At least part of the set of data is then compressed into a smaller number of subsets. For each of the subsets which does not contain compressed data after the compression, a predetermined value is stored in the corresponding entry of the corresponding compression group, to indicate that corresponding data is compressed and represented elsewhere in the compression group. The predetermined value may also indicate which compression algorithm was used to compress the data.

US Patent:

7552223, Jun 23, 2009

Filed:

Apr 25, 2003

Appl. No.:

10/423477

Inventors:

Emmanuel Ackaouy - San Francisco CA, US
Brian Quirion - San Jose CA, US
David Grunwald - Santa Clara CA, US
Ashish Prakash - Morrisville NC, US
James Voll - Palo Alto CA, US
Paul Eastham - Mountain View CA, US
Kartik Ayyar - Santa Clara CA, US

Assignee:

Netapp, Inc. - Sunnyvale CA

International Classification:

G06F 15/16

US Classification:

709229, 709213, 709217, 711141, 707 10

Abstract:

In an embodiment, a method to provide data consistency in a storage system, includes: providing, by a server to a proxy cache, a lock associated with a delegated file in the server; in response to a write request from a client, modifying data in a cached copy of the delegated file in the proxy cache; revoking, by the server, the lock associated with the delegated file, in response to a request from another device to access the delegated file so that the delegated file is now a formerly delegated file; and writing the modified data to the formerly delegated file in the server to update the formerly delegated file; and permitting access to the formerly delegated file by the another device.

US Patent:

7926087, Apr 12, 2011

Filed:

Nov 30, 2007

Appl. No.:

11/948270

Inventors:

James J Voll - Palo Alto CA, US
Konstantinos Roussos - Sunnyvale CA, US
Anshu Surana - Bangalore, IN

Assignee:

NetApp, Inc. - Sunnyvale CA

International Classification:

H04L 9/32

US Classification:

726 2, 726 3, 726 4

Abstract:

Described herein is a centralized access request authorization system comprising an authorization module, one or more server systems, and a collection of one or more storage systems connected through a network. An application executing on a server system receives an access request for accessing the storage system collection and sends an authorization request to the authorization module for authorizing the access request. The application may be configured to only send the access request to the storage system collection if it first receives an authorization of the access request from the authorization module. Since the application is configured to do such, the storage system performs the access request without performing any authorization verification on the access request. The authorization module may receive authorization requests from a plurality of applications (executing on a plurality of server systems) and determine received authorization requests using a single repository of access permission information.

US Patent:

8166257, Apr 24, 2012

Filed:

Jan 24, 2008

Appl. No.:

12/019574

Inventors:

James J. Voll - Palo Alto CA, US

Assignee:

Network Appliance, Inc. - Sunnyvale CA

International Classification:

G06F 13/00
G06F 13/28

US Classification:

711154, 711114, 711170, 711E12084

Abstract:

Methods and systems for mapping data-management requirements to the provisioning of a data storage system to conform to a set of user-defined data-management policies. A conformance engine with storage system awareness translates the set of data-management policies to a corresponding set of storage-provisioning policies and provisions the resources of the storage system thereby to conform the storage system to the data-management policies. A conformance checker continuously and automatically compares the provisioning of the storage system resources to the provisioning required to meet the data-management policies. When nonconformance is detected, the conformance engine automatically re-provisions the available resources of the storage system to conform the storage system to the data management policies.

US Patent:

8327102, Dec 4, 2012

Filed:

Oct 21, 2009

Appl. No.:

12/582984

Inventors:

Anurag Palsule - Bangalore, IN
Shailaja Kamila - Bangalore, IN
James Voll - Palo Alto CA, US
Ameet Deulgaonkar - Bangalore, IN
Nagender Somavarapu - Bangalore, IN

Assignee:

Netapp, Inc. - Sunnyvale CA

International Classification:

G06F 12/00
G06F 13/00
G06F 13/28

US Classification:

711165, 711162

Abstract:

Method and system for processing client provisioning and migration requests is provided. The process evaluates a provisioning request and selects a storage that best meets the client requirements. The process determines if non-disruptive migration is possible and if it is possible then the storage is automatically configured for non-disruptive migration. Once the storage is provisioned and configured, the process receives a migration request to migrate information from the storage. The process determines an access protocol used by the client to access the storage. The process determines if a storage system that manages the storage is capable of supporting non-disruptive migration of information from the storage. If the storage system is capable, then a migration technique is automatically selected for migrating the information from the storage.

US Patent:

8539253, Sep 17, 2013

Filed:

Jul 18, 2006

Appl. No.:

11/488619

Inventors:

Jason Sobel - Santa Clara CA, US
James Voll - Palo Alto CA, US

Assignee:

NetApp, Inc. - Sunnyvale CA

International Classification:

G06F 21/10

US Classification:

713193, 711162

Abstract:

Files or directories in a persistent image such as a file system backup structure are hidden from general access by establishing a data set used by the file system when accessing the persistent image. The data set indicates a visibility status of the files or directories in the persistent image. Requests to the file system for access to the image are filtered through the data set to prevent unintentionally revealed information in the image from being generally available. Commands to add and remove entries in the data set are provided. The data set may be composed of combinations of lists, in which list entries indicate a hidden file or directory, or indicate a visible file or directory. The data set is maintained in system memory and updated on disk to permit restoration of the data set when a volume is mounted or during recovery from a system crash. Information that was unintentionally revealed in the active file system while a backup was being made can be obscured retroactively to provide protection from general access to improve information security in the file system.

US Patent:

20100106933, Apr 29, 2010

Filed:

Oct 27, 2008

Appl. No.:

12/259145

Inventors:

Shailaja Kamila - Sunnyvale CA, US
James J. Voll - Sunnyvale CA, US
Ameet Deulgaonkar - Sunnyvale CA, US
Anurag Palsule - Sunnyvale CA, US
Ramanathan S. Padinjarel - Sunnyvale CA, US

Assignee:

NetApp, Inc. - Sunnyvale CA

International Classification:

G06F 12/02
G06G 7/62
G06F 15/173
G06F 12/00

US Classification:

711171, 703 21, 709224, 711E12001, 711E12002

Abstract:

A system for managing configuration of a storage network having multiple storage resources is disclosed. The system uses a storage management policy to set parameters for detecting storage resource problems in the storage network. The system monitors the storage resources in the storage network based on the storage management policy. Based on the monitoring, the system detects limited storage resource conditions, and identifies one or more potential solutions to the condition. After identifying potential solutions, the system simulates effects on the storage resources of implementing individual solutions. Based on the simulations, the system then implements one or more selected solutions. These solutions may be selected automatically or by a user.

US Patent:

59535229, Sep 14, 1999

Filed:

Jul 1, 1996

Appl. No.:

8/675360

Inventors:

Kevin C. Fox - San Jose CA
Timothy P. Marsland - Palo Alto CA
Michael L. Federwisch - San Jose CA
James J. Voll - Palo Alto CA
Madhusudhan Talluri - San Jose CA

Assignee:

Sun Microsystems, Inc. - Mountain View CA

International Classification:

G06F 1208

US Classification:

395681

Abstract:

A devtmp device driver provides the functionality of temporary files by representing a virtual device and including the virtual device among several devices within which a file system can store files. Rather than storing data in and retrieving data from a physical device, the devtmp device driver stores data in and retrieves data from anonymous storage through a swap file system which manages anonymous storage for a virtual memory system. A file system uses the devtmp device driver in the same manner the file system uses conventional device drivers which store data in and retrieve data from secondary storage devices. Since the devtmp device driver represents a virtual device whose data are stored in anonymous storage managed by the swap file system, the total amount of storage available for storing data of temporary files is shared among the various components of a computer process to successfully satisfy various needs of various computer processes. Temporary files can be accessed through a main file system, e. g. , the UNIX file system, using a delayed-write-mode.