George G Ward

US Patent:

7302540, Nov 27, 2007

Filed:

Jul 26, 2005

Appl. No.:

11/190039

Inventors:

Jon Mark Holdman - Wheat Ridge CO, US
Ravi Kumar Kavuri - Inver Grove Heights MN, US
Nancy L. Rassbach - Westminster CO, US
Scott Cary Hammett - Golden CO, US
George Thomas Ward - Louisville CO, US

Assignee:

Storage Technology Corporation - Louisville CO

International Classification:

G06F 12/00

US Classification:

711162, 711112

Abstract:

A virtual tape storage system includes an original virtual tape library for storing data and includes snapshot virtual tape library (SVTL). The SVTL includes a snapshot of the data stored in the original virtual tape library. A host is operable to receive the snapshot data from the SVTL to perform a disaster recovery test of the original virtual tape library. The SVTL is generated from the original virtual tape library using a copy-on-write snapshot process. In an embodiment, the original virtual tape library stores the stored data on a number of virtual tape volumes (VTVs), and the SVTL includes a snapshot of those VTDs and VTVs which are required for a disaster recovery test of the original virtual tape library. In this case, the host uses the SVTL to perform the disaster recovery test of the original virtual tape library.