公开(公告)号：GB2484019A

公开(公告)日：2012-03-28

申请号：GB201119845

申请日：2010-07-12

Applicant: IBM

Inventor： HOCHBERG AVISHAI ,  CANNON DAVID MAXWELL ,  SMITH JAMES PATRICK ,  HISE DAVID GREGORY VAN ,  YAKUSHEV MARK ,  ANGLIN MATTHEW

IPC: G06F11/14 ,  G06F17/30

Abstract: One aspect of the present invention includes a configuration of a storage management system that enables the performance of deduplication activities at both the client (source) and at the server (target) locations. The location of deduplication operations can then be optimized based on system conditions or predefined policies. In one embodiment, seamless switching of deduplication activities between the client and the server is enabled by utilizing uniform deduplication process algorithms and accessing the same deduplication index (containing information on the hashed data chunks). Additionally, any data transformations on the chunks are performed subsequent to identification of the data chunks. Accordingly, with use of this storage configuration, the storage system can find and utilize matching chunks generated with either client- or server-side deduplication.

公开(公告)号：GB2498475A

公开(公告)日：2013-07-17

申请号：GB201306400

申请日：2011-09-20

Applicant: IBM

Inventor： TEVIS GREGORY JOHN ,  HISE DAVID GREGORY VAN ,  WOLF OREN ,  RAICHSTEIN ERAN ,  SMITH JAMES PATRICK

IPC: G06F11/14 ,  G06F17/30

Abstract: Techniques for adjusting the frequency of data backups and initiating event-driven backups in a storage system are disclosed herein. In one embodiment, a self-adjusting backup frequency, known as a "Change Rate Objective," is defined to conduct or delay backups for one or more volumes in the storage system on the basis of an associated policy value. The Change Rate Objective may be tied to one or more business or data activity events, such as the amount and type of data changes since a last backup. The storage system may also be tailored to conduct or delay full or incremental backups on the basis of a Change Rate Objective that measures whether a full or incremental or differential backup is more appropriate. Various data or system failures, or data or business events may also be used to adjust the retention periods of continuous data protection (CDP) data and delay a rollup of CDP data.