Storage controller, control method of the same, and...

Details Storage controller, control method of the same, and... Storage controller, control method of the same, and...

2008-01-14

2011-10-25

Dudek, Jr., Edward J (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711SE12103, C707S640000

Reexamination Certificate

active

08046549

ABSTRACT:
In the storage controller of the present invention, different difference bitmaps are used for predetermined sections respectively, whereby the difference between the primary volume and the base volume is managed for each section, and the data are protected efficiently. The difference between the primary volume and the base volume is managed by using the difference bitmaps that are different for the respective sections. The journal data after a lapse of the targeted protection period are written to the base volume and then discarded. At the time of recovery, the difference bitmaps are merged to create a new difference bitmap, and the difference is copied from the base volume to the primary volume. Thereafter, the journal data up to the designated restoration point are written to the primary volume.

REFERENCES:
patent: 2005/0028022 (2005-02-01), Amano
patent: 2005/0188256 (2005-08-01), Stager et al.
patent: 2010/0077173 (2010-03-01), Rao et al.
patent: 2005-018738 (2005-01-01), None

Affiliated with

Also associated with

Rating

Storage controller, control method of the same, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Storage controller, control method of the same, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storage controller, control method of the same, and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4282092