Shared data mirroring apparatus, method, and system

Details Shared data mirroring apparatus, method, and system Shared data mirroring apparatus, method, and system

2004-02-05

2008-08-12

Bataille, Pierre-Michel (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S161000

Reexamination Certificate

active

07412577

ABSTRACT:
A network component useful in tracking write activity by writing logs containing write address information is described. The tracking component may be used in networked systems employing data mirrors to record data block addresses written to a primary storage volume during the time a data mirror is unavailable. The tracking component can be available to any network originating node, and may therefore track write activity on multiple volumes. At the time a data mirror is reconstructed, the log written may be used to construct a list of block addresses pointing to locations on a primary storage volume wherein data differs from a secondary storage volume member of the mirror. The locations maybe copied from the primary to secondary storage volume to reconstruct the data mirror. The performance impact of the tracking component is minimal and a shared network resource is offered that increases fault tolerance in the event of backup device failures.

REFERENCES:
patent: 5546536 (1996-08-01), Davis et al.
patent: 6088697 (2000-07-01), Crockett et al.
patent: 6128699 (2000-10-01), Golding
patent: 6175900 (2001-01-01), Forin et al.
patent: 6366986 (2002-04-01), St. Pierre et al.
patent: 6397229 (2002-05-01), Menon et al.
patent: 6460054 (2002-10-01), Grummon
patent: 6549992 (2003-04-01), Armangau et al.
patent: 6684294 (2004-01-01), Huffman
patent: 6938135 (2005-08-01), Kekre et al.
patent: 7051173 (2006-05-01), Tsuchiya et al.
patent: 2002/0059505 (2002-05-01), St. Pierre et al.
patent: 2002/0133512 (2002-09-01), Milillo et al.
patent: 2003/0005235 (2003-01-01), Young
patent: 2003/0065901 (2003-04-01), Krishnamurthy
patent: 2003/0088592 (2003-05-01), Innan et al.
patent: 2003/0088713 (2003-05-01), Mandal et al.
“LAN- Free Backups Using the Sun StorEdge Instant Image 3.0 Software”, http://www.sun.com/blueprints Jun. 2002, part No. 816-4527-10 Revision A, May 10, 2002.
“Sun StorEdge Instant Image 3.0 Configuration Guide”, Part No. 806-7676-10, Jun. 2001, Revision A.

Affiliated with

Also associated with

Rating

Shared data mirroring apparatus, method, and 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 Shared data mirroring apparatus, method, and system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shared data mirroring apparatus, method, and system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3994679