Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2004-06-29
2009-12-29
Peugh, Brian R (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
Reexamination Certificate
active
07640408
ABSTRACT:
Described are techniques for use with online data copying or migration. Data is pushed from a source to a target device while one or both of the source and target devices are available for use by one or more host systems. The host systems may perform I/O operations to the source and/or target devices while the data migration is ongoing if a copy session is defined on the data storage system(s) of the source and/or target devices. A copying operation performs data migration from the source to the target device. A migration vector is used to indicate which portions of the source have been migrated. A change vector may be associated with each of the source and/or target devices to indicate portions that have been modified in order to perform a differential copy operation.
REFERENCES:
patent: 5206939 (1993-04-01), Yanai et al.
patent: 5778394 (1998-07-01), Galtzur et al.
patent: 5845147 (1998-12-01), Vishlitzky et al.
patent: 5857208 (1999-01-01), Ofek
patent: 6415296 (2002-07-01), Challener et al.
patent: 6473775 (2002-10-01), Kusters et al.
patent: 6549992 (2003-04-01), Armangau et al.
patent: 6611901 (2003-08-01), Micka et al.
patent: 7120673 (2006-10-01), Kitamura et al.
patent: 7343449 (2008-03-01), Arai et al.
patent: 2004/0186900 (2004-09-01), Nakano et al.
patent: 2005/0177693 (2005-08-01), Nahum
patent: 2005/0278391 (2005-12-01), Spear et al.
Brown David Joshua
Don Arieh
Halligan Kenneth A.
Riordan Patrick Brian
Scharland Michael
EMC Corporation
Muirhead and Saturnelli LLC
Peugh Brian R
LandOfFree
Online data migration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Online data migration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Online data migration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4073884