US 8,370,542 B2Granted

Combined stream auxiliary copy system and method

AssigneeCommvault Systems, Inc.

InventorsJun Lu, Parag Gokhale

Life of this patent

Estimating the term…

Loading patent…

Abstract

A system and method for transferring data in a library storage system. The library storage system comprises a management server including a storage policy. A media agent is connected to the management server. A plurality of storage media and a data source are connected to the media agent. The data source is divided into at least a first and a second portion of data. The portions of data are transferred from the data source to a first and second primary storage medium using a first and a second data stream respectively. The media agent then causes the first and second portion of data to be transferred from the first and second storage medium to a third auxiliary storage medium using a third combined data stream. Auxiliary copying is performed in chunks and multiple streams are copied in parallel.

Claims8

Dependent claims

A method for transferring data in a multi-tiered storage system, the method comprising:

performing a first backup copy of data stored in a data source, wherein said performing of the first backup copy further comprises:
dividing the data in the data source into at least a first portion of data and a second portion of data, the data comprising multiple file types, and
transferring the first and second portions of data from the data source to a first storage medium and a second storage medium using a first data stream and a second data stream respectively to create the first backup copy of the data;
identifying the multiple file types of data in the first and second portions of data;
determining based at least upon the file types if the first portion of data and the second portion of data in the first backup copy can be combined;
if the first portion of data and the second portion of data can be combined, performing a second backup copy of the first and second portions of data, wherein the second backup copy saves the first and second portions of data in a combined format, wherein the performing of the second backup copy comprises:
transferring the first and second portions of the first backup copy of the data from the first and second storage mediums to a third storage medium by combining data streams from the first and second storage mediums, and
storing on the third storage medium, the additional copies of the data by storing in a combined format, the first and second portions of the first backup copy to create the second backup copy;
and
restoring the first portion of data to the data source by retrieving the first portion of data from the combined format of the second backup copy.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/663,384Filed 16 Sep 2003 · us provisional application
Priority: 16 Sep 2002
Published: US 2004/0225834 A111 Nov 2004
Granted: 5 Feb 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G06F 11/1448
Point-in-time backing up or restoration of persistent data: management of the data involved in backup or backup restore
G06F 3/0613
Improving I/O performance: in relation to throughput
G06F 3/065
Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems: replication mechanisms
G06F 3/0686
Plurality of storage devices: libraries, e.g. tape libraries, jukebox