Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Patent
1998-05-29
2000-12-19
Beausoliel, Jr., Robert W.
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
709213, G06F 1100
Patent
active
061638560
ABSTRACT:
A file disaster recovery system that employs geographical replication of data from a local site to remote site in a such a manner that file requests from clients of the local site can be handled by a file server on the remote site following a failover from the local site to the remote site. Geographical data replication software running on a local server checkpoints to a log in local stable storage all information on file operations that change the file state of the local file system. According to a selected mode, the local geographical data replication software flushes information in the log pertaining to the file operations since the last flush to the remote site. At the remote site, compatible remote geographical data replication software running on a remote file server receives the flushed log and replicates in sequence order the file operations represented in the flushed log. The results of the operations are stored on remote stable storage. The local and remote servers can be clusters or single servers. There is no need for commonality, except for operating and file systems, between the local and remote sites. Because operations are replicated and not low level, formatted data, the local and remote stable file storage can be completely different.
REFERENCES:
patent: 5077658 (1991-12-01), Bendert et al.
patent: 5201044 (1993-04-01), Frey, Jr. et al.
patent: 5513314 (1996-04-01), Kandasamy et al.
patent: 5564011 (1996-10-01), Yammine et al.
patent: 5649195 (1997-07-01), Scott et al.
patent: 5675510 (1997-10-01), Coffey et al.
patent: 5682527 (1997-10-01), Cooper et al.
patent: 5689706 (1997-11-01), Rao et al.
patent: 5765151 (1998-06-01), Senator
patent: 5832222 (1998-11-01), Dziadosz et al.
patent: 5878434 (1999-03-01), Draper et al.
patent: 5893140 (1999-04-01), Vahalia et al.
patent: 5909540 (1999-06-01), Carter et al.
patent: 5913160 (1999-06-01), Leung
patent: 5937343 (1999-08-01), Leung
patent: 5940826 (1999-08-01), Heideman et al.
patent: 5948062 (1999-09-01), Tzeinic et al.
patent: 5951695 (1999-09-01), Kolovson
patent: 5966706 (1999-10-01), Biliris et al.
patent: 5987506 (1999-11-01), Carter et al.
patent: 5987621 (1999-11-01), Duso et al.
patent: 5991771 (1999-11-01), Falls et al.
patent: 6016553 (2000-01-01), Schneider et al.
"Solaris MC File System Framework", Vlada Matena, Yousef A. Khalidi, Ken Shirriff, 20 pages, Oct. 1996, Sun Microsystems Laboratories, SMLI TR-96-57.
"White Paper-NFS", 12 pages, .COPYRGT.1994-1997 Sun Microystems, Inc. Palo Alto CA 94303, http://www.sun.com/solaris/wp-nfs
fs 18.html.
"Building Distributed Process Management on an Object-Oriented Framework", Ken Shirriff, Sun Microsystems, 16 pages, Jan. 12, 1998, http://www.sunlabs.com/research/solaris-mc/doc/process-usenix.doc.html.
"Using DFS Without DCE/LFS (Episode)", Chuck E. Lever, 7 pages, Jan. 1994, Center for Information Technology Integration: Technical Report Series 1986-1997, Report 94-2.
"DFS Server for Window NT", Transarc, Pittsburgh PA 15219, 4 pages, Jan. 12, 1998, http://www.transarc.com/afs/transarc.com/public/www/Public/ProdServ/Produc t/DFS/dfsnt/dfsservent.html.
Dion David
Khalidi Yousef A.
Swaroop Anil
Talluri Madhusudhan
Beausoliel, Jr. Robert W.
Iqbal Nadeem
Sun Microsystems Inc.
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