Method and program for creating a snapshot, and storage system

Details Method and program for creating a snapshot, and storage system Method and program for creating a snapshot, and storage system

2007-02-20

2007-02-20

Lane, Jack A. (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S204000

Reexamination Certificate

active

10979186

ABSTRACT:
This invention includes: a step (S1) of receiving a snapshot creation request from a client computer; a step (S3) of obtaining, upon reception of the snapshot creation request, a usage ratio of a second volume by the update differences; a step (S2) of obtaining a use history of the update differences in the second volume of the user; a step (S4, S5) of choosing, based on the usage ratio and the use history, one from differential snapshot in which the update differences of the first volume are written in the second volume and volume snapshot in which a third volume is synchronized with the first volume; and a step (S6, S7) of executing the chosen one of differential snapshot and volume snapshot. As a result, it is possible to economically use a differential volume by using differential snapshot in combination with volume snapshot.

REFERENCES:
patent: 2004/0250033 (2004-12-01), Prahlad et al.
patent: 2006/0047926 (2006-03-01), Zheng
patent: 2002-278819 (2002-09-01), None

Affiliated with

Also associated with

Rating

Method and program for creating a snapshot, and storage system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and program for creating a snapshot, and storage system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and program for creating a snapshot, and storage system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3838841