Vaijayanti R Bharadwaj

US Patent:

7487308, Feb 3, 2009

Filed:

Nov 28, 2003

Appl. No.:

10/724245

Inventors:

Chirag Deepak Dalal - Maharaahtra, IN
Vaijayanti Rakshit Bharadwaj - Sunnyvale CA, US
Vivek V. Gupta - Aundh, IN

Assignee:

Symantec Operating Corporation - Cupertino CA

International Classification:

G06F 13/00
G06F 12/00

US Classification:

711162, 711100, 711112, 711154, 711170

Abstract:

A method, system, and computer program product for identifying and reserving suitable replacement storage devices for use when a storage device underlying a logical volume fails or when the size of the volume is to be increased. Replacement devices are reserved if they conform to the intent of a creator of the logical volume and at the time of creation or reconfiguration of the logical volume. Volume management operations like resizing the volume and evacuating data from the volume use the reserved disks that have already been allocated as suitable to preserve the intent of the creator of the logical volume. Reserving replacement disks in advance ensures that a backup disk is available and eliminates the need to perform a lengthy, time-consuming search for a suitable replacement disk that conforms to the intent of the logical volume.

US Patent:

7636830, Dec 22, 2009

Filed:

Jan 29, 2004

Appl. No.:

10/767399

Inventors:

Chirag Deepak Dalal - Maharashtra, IN
Vaijayanti Rakshit Bharadwaj - Sunnyvale CA, US
Ronald S. Karr - Palo Alto CA, US

Assignee:

Symantec Operation Corporation - Cupertino CA

International Classification:

G06F 12/00

US Classification:

711173, 711162, 711111, 711165

Abstract:

A method, system, computer system, and computer program product to allocate storage resources among multiple logical volumes. In response to a request to perform a set of operations on multiple logical volumes, a set of allocations of available storage space for performing the set of operations is made. At the time of identifying the storage regions to use for each allocation, the remaining operations and the storage regions that would be available for performing the remaining operations are examined. The rules for implementing each of the logical volumes can be evaluated as part of this examination. If it is apparent that one of the remaining operations will fail based upon a particular set of allocations, space allocated for a previous operation can be de-allocated and alternative allocations can be examined to find a set of allocations that enable the request to be performed successfully.

US Patent:

7689767, Mar 30, 2010

Filed:

Sep 30, 2004

Appl. No.:

10/954733

Inventors:

Chirag Deepak Dalal - Maharashtra, IN
Vaijayanti Rakshit Bharadwaj - Sunnyvale CA, US

Assignee:

Symantec Operating Corporation - Mountain View CA

International Classification:

G06F 13/00
G06F 13/28

US Classification:

711114, 710104

Abstract:

A computer system or memory medium with instructions executable by a computer system to detect and/or suggest corrective actions when performance and availability are violated in an environment deploying virtualization at multiple levels. In one embodiment the computer system receives identities of a plurality of first physical storage devices, wherein storage in the plurality of first physical storage devices was logically aggregated to create a first storage object. The computer system also receives identities of a plurality of second physical storage devices, wherein storage in the plurality of second physical storage devices was logically aggregated to create a second storage object. Then, the computer system compares the identity of each of the plurality of first physical storage devices with the identities of the plurality of second physical storage devices.

US Patent:

7783831, Aug 24, 2010

Filed:

Oct 29, 2004

Appl. No.:

10/977968

Inventors:

Chirag Deepak Dalal - Maharashtra, IN
Vaijayanti Rakshit Bharadwaj - Sunnyvale CA, US

Assignee:

Symantec Operating Corporation - Cupertino CA

International Classification:

G06F 13/00
G06F 13/28

US Classification:

711114

Abstract:

A computer system or memory medium with instructions executable by a computer system to detect and/or suggest corrective actions when performance and availability are violated in an environment deploying virtualization at multiple levels. In one embodiment the computer system receives identities of a plurality of first physical storage devices, wherein storage in the plurality of first physical storage devices was logically aggregated to create a first storage object. The computer system also receives identities of a plurality of second physical storage devices, wherein storage in the plurality of second physical storage devices was logically aggregated to create a second storage object. Then, the computer system compares the identity of each of the plurality of first physical storage devices with the identities of the plurality of second physical storage devices.

US Patent:

20130226881, Aug 29, 2013

Filed:

Feb 29, 2012

Appl. No.:

13/408051

Inventors:

Alok Sharma - Bangalore, IN
Sunil Walwaiker - Bangalore, IN
Vaijayanti Bharadwaj - Sunnyvale CA, US

Assignee:

NetApp. Inc. - Sunnyvale CA

International Classification:

G06F 17/30

US Classification:

707692, 707E17005

Abstract:

The techniques introduced here provide for enabling deduplication operations for a file system without significantly affecting read performance of the file system due to fragmentation of the data sets in the file system. The techniques include determining, by a storage server that hosts the file system, a level of fragmentation that would be introduced to a data set stored in the file system as a result of performing a deduplication operation on the data set. The storage server then compares the level of fragmentation with a threshold value and determines whether to perform the deduplication operation based on a result of comparing the level of fragmentation with the threshold value. The threshold value represents an acceptable level of fragmentation in the data sets of the file system.

US Patent:

7467257, Dec 16, 2008

Filed:

Mar 29, 2004

Appl. No.:

10/812322

Inventors:

Chirag Deepak Dalal - Maharashtra, IN
Vaijayanti Rakshit Bharadwaj - Sunnyvale CA, US

Assignee:

Symantec Operating Corporation - Cupertino CA

International Classification:

G06F 12/00

US Classification:

711114, 711154

Abstract:

A method, system, computer system, and computer program product to specify the particular characteristics of hardware to acquire to enable a logical volume to be maintained in accordance with the purpose for which the logical volume was created. In response to a command to perform an operation on a logical volume, existing storage that can be used to perform the operation is identified. If the existing storage is insufficient to perform the operation, a specification is developed for the additional storage to acquire to enable the operation to be performed successfully. Connectivity of the additional storage is also specified to storage objects in the existing logical volume so that the newly-acquired resources can be used for their intended purpose when acquired.