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

Clustered filesystem with data volume snapshot maintenance

Patent 8156080 Issued on April 10, 2012. Estimated Expiration Date: Icon_subject October 12, 2030. 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

System and method for growing differential file on a base volume of a snapshot Patent #: 6473775
Issued on: 10/29/2002
Inventor: Kusters, et al.

Inventor

Assignee

Application

No. 12903096 filed on 10/12/2010

US Class:

707/640

Examiners

Primary: Cottingham, John R.
Assistant: Allen, Nicholas

Attorney, Agent or Firm

International Classes

G06F 7/00
G06F 17/00

Abstract

A computer system with read/write access to storage devices creates a snapshot of a data volume at a point in time while continuing to accept access requests to the mirrored data volume by copying before making changes to the base data volume. Multiple snapshots may be made of the same data volume at different points in time. Only data that is not stored in a previous snapshot volume or in the base data volume are stored in the most recent snapshot volume.

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