U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Methods and apparatus for point-in-time volumes

Patent 6799258 Issued on September 28, 2004. Estimated Expiration Date: Icon_subject January 10, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Method and apparatus for performing point in time backup operation in a computer system
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Issued on: 08/10/1999
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System and method for real-time data backup using snapshot copying with selective compaction of backup data
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Patent #: 6065018
Issued on: 05/16/2000
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Method of automatically synchronizing mirrored database objects
Patent #: 6289357
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Administration of a differential backup system in a client-server environment
Patent #: 6629110
Issued on: 09/30/2003
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Remote data mirroring system using local and remote write pending indicators Patent #: 6647474
Issued on: 11/11/2003
Inventor: Yanai ,   et al.

Inventor

Assignee

Application

No. 10044327 filed on 01/10/2002

US Classes:

711/162, Backup711/161, Archiving707/204Archiving or backup

Examiners

Primary: Moazzami, Nasser

Attorney, Agent or Firm

International Class

G06F 1200

Abstract

Methods and apparatus for point-in-time volumes are provided. A relationship is enabled between a source volume and point-in-time volume. Copying a data chunk to the point-in-time volume before a write operation modifies the data chunk on the source volume dynamically creates the point-in-time volume. The point-in-time volume can be accessed in read/write mode as a general purpose data storage volume. Other embodiments comprising additional features, such as a forced migration process, are also provided.

Other References

  • Letter from J. Bocksor, VP Product Development, DataCore Software Corporation, to Joseph Neill at Unisys Corporation, dated Sep. 17, 1999.
  • D. Golds, “Storage Snapshot: Volume Snapshot Service” [online], [WinHEC, Mar. 26-28, 2001]. Retrieved from the Internet
  • “Data Protection—Disk-Based Solutions”, Network Appliance [online], [retrieved on Oct. 20, 2001]. Retrieved from the Internet
  • “PowerVault 530F Features”, Dell Computer Corporation [online], [retrieved on Oct. 20, 2001]. Retrieved from the Internet
  • “IBM RAMAC SnapShot for VM/ESA Version 1 Release 1” [online], [retrieved on Oct. 20, 2001]. Retrieved from the Internet
  • “Deliver Non-Stop Availability”, DataCore Software Corporation [online], retrieved from the Internet
  • B. Goldworm, “Vendor Profile: FalconStor Aims to Provide a Complete Set of Storage Services”, Storage Networking World Online [online], [retrieved on Jul. 22, 2002]. Retrieved from the Internet
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