STORED DATA REVERIFICATION MANAGEMENT SYSTEM AND METHOD

• US 20130006927A1
• Filed: 09/13/2012
• Published: 01/03/2013
• Est. Priority Date: 11/13/2003
• Status: Active Grant

• Current Assignee: CommVault Systems Incorporated
• Original Assignee: CommVault Systems Incorporated
• Inventors: Brockway, Brian, Gokhale, Parag, Lu, Jun
• Granted Patent: US 9,020,990 B2
• Time in Patent Office: Days
• US Class Current: 707/610
• CPC Class Codes: G06F 11/14 Error detection or correction of the data by redundancy in operation G06F11/16 takes precedence
• CPC Class Codes: G06F 11/1448 Management of the data involved in backup or backup restore
• CPC Class Codes: G06F 16/219 Managing data history or versioning querying versioned data G06F16/2474; querying temporal data G06F16/2477
• CPC Class Codes: G06F 7/00 Methods or arrangements for processing data by operating upon the order or content of the data handled logic circuits H03K19/00
• CPC Class Codes: G11C 2029/0409 Online test
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

A system and method are provided for verifying data copies and reverifying the copies over the life span of media according to a verification policy. Characteristics of media and use of media are tracked to provide metrics which may be used to dynamically reevaluate and reassign verification policies to optimize media usage. Copies that fail verification operations may be repaired by repeating a storage operation for recent copies or by substituting a close temporal copy of the failed copy.

Claims

1. A system for verifying data, the system comprising:

a data package comprising a group of files, wherein the data package is stored on a first media device;

a storage manager executing in one or more computer processors, the storage manager configured to verify that a copy of the data package stored on a second media device is an accurate copy of the data package stored on the first media device by comparing first metadata associated with the data package with second metadata associated with the copy of the data package; and

a verification time period associated with verifying the copy of the data package stored on the second media device, the storage manager configured to vary the verification time period based on at least a usage history of the second media device, wherein the usage history comprises at least a number of storage operations performed on the second media device.