US Patent No: 7,984,016

Number of patents in Portfolio can not be more than 2000

Method for asynchronous replication of a hierarchically-indexed data store

ALSO PUBLISHED AS: 20080250086

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Abstract

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Changes such as write operations on a replication source comprising a hierarchically-indexed file system and associated data store are tracked and aggregated over a point-in-time image replication interval and communicated to a replication target. The replication target receives the changes, conducts operations to make the changes on a target volume or portion thereof, and conducts a point-in-time image replication operation to synchronize the replication target with the replication source. In the present invention the advantages of replication techniques developed for log-structured file systems are provided to systems with conventional hierarchical file systems. The invention also facilitates maintaining point-in-time retrievable images of a volume or portion thereof on a target volume while reducing the bandwidth and processing burden associated with replication.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
INTERNATIONAL BUSINESS MACHINES CORPORATIONARMONK, NY77509

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kisley, Richard Victor Tucson, AZ 13 121

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EMC CORPORATION (2)
6,324,654 Computer network remote data mirroring system 226 1998
6,434,681 Snapshot copy facility for a data storage system permitting continued host read/write access 259 1999
 
NETAPP, INC. (2)
7,010,553 System and method for redirecting access to a remote mirrored snapshot 85 2002
7,043,485 System and method for storage of snapshot metadata in a remote file 121 2002
 
NETWORK APPLIANCE, INC. (2)
6,289,356 Write anywhere file-system layout 242 1998
7,039,663 System and method for checkpointing and restarting an asynchronous transfer of data between a source and destination snapshot 79 2002
 
ORACLE INTERNATIONAL CORPORATION (2)
5,806,074 Configurable conflict resolution in a computer implemented distributed database 175 1996
5,937,414 Method and apparatus for providing database system replication in a mixed propagation environment 104 1997
 
ACRONIS INTERNATIONAL GMBH (1)
7,047,380 System and method for using file system snapshots for online data backup 25 2004
 
HITACHI SOFTWARE ENGINEERING CO., LTD. (1)
5,293,618 Method for controlling access to a shared file and apparatus therefor 23 1990
 
POWER MANAGEMENT ENTERPRISES, LLC (1)
5,832,513 Detecting significant file system alterations during execution of a storage media software utility 39 1996
 
UNISYS CORPORATION (1)
6,957,221 Method for capturing a physically consistent mirrored snapshot of an online database from a remote database backup system 37 2002
 
Other [Check patent profile for assignment information] (1)
6,289,536 Apparatus for handling incapacitated patients 12 1998

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
AMERICAN MEGATRENDS, INC. (1)
8,667,330 Information lifecycle management assisted synchronous replication 0 2012
 
HITACHI, LTD. (1)
8,370,302 Method and apparatus for block based volume backup 0 2009

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Jan 19, 2015
7.5 Year Payment $3600.00 $1800.00 $900.00 Jan 19, 2019
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 19, 2023
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Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00