GB2455075B - Method and system for providing hot standby capability for computer applications - Google Patents

Method and system for providing hot standby capability for computer applications

Info

Publication number
GB2455075B
GB2455075B GB0723115A GB0723115A GB2455075B GB 2455075 B GB2455075 B GB 2455075B GB 0723115 A GB0723115 A GB 0723115A GB 0723115 A GB0723115 A GB 0723115A GB 2455075 B GB2455075 B GB 2455075B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
controller
servers
server
data
105b
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB0723115A
Other versions
GB0723115D0 (en )
GB2455075A (en )
Inventor
David Edge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HSC TECHNOLOGIES Ltd
Original Assignee
HSC TECHNOLOGIES Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/10Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network
    • H04L67/1095Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network for supporting replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes or user terminals or syncML
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/1658Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit
    • G06F11/1662Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit the resynchronized component or unit being a persistent storage device
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/20Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2023Failover techniques
    • G06F11/2025Failover techniques using centralised failover control functionality
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/20Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2038Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant with a single idle spare processing component
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/20Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2097Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements maintaining the standby controller/processing unit updated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00 contains provisionally no documents
    • H04L29/02Communication control; Communication processing contains provisionally no documents
    • H04L29/06Communication control; Communication processing contains provisionally no documents characterised by a protocol
    • H04L29/08Transmission control procedure, e.g. data link level control procedure
    • H04L29/08081Protocols for network applications
    • H04L29/08135Protocols for network applications in which application tasks are distributed across nodes in the network
    • H04L29/0854Arrangements for replication or mirroring of data, e.g. data synchronisation between network nodes and/or user terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/10Mapping of addresses of different types; Address resolution
    • H04L61/106Mapping of addresses of different types; Address resolution across networks, e.g. mapping telephone numbers to data network addresses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/10Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network
    • H04L67/1097Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network for distributed storage of data in a network, e.g. network file system [NFS], transport mechanisms for storage area networks [SAN] or network attached storage [NAS]
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16Error detection or correction of the data by redundancy in hardware
    • G06F11/20Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2041Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant with more than one idle spare processing component

Abstract

A network-level controller 103 allows servers 105 and application software to operate in a fully redundant hot standby mode. An application being protected runs on a primary server 105a and a secondary server 105b. Controller 103 has total control over the transfer of data packets. Data requests from clients 101 are duplicated (mirrored) by controller 103 and routed to both servers 105a, 105b. Both servers respond to requests but only data received from main server 105a is routed back to the client with data from standby server 105b being ignored. Controller 103 monitors servers 105 and if a server or application fails then a failover to the standby server is performed. The client-side IP address of controller 103 is a virtual IP address and servers 105 are assigned separate IP addresses which controller 103 communicates with. When a failed server recovers, controller 103 manages all background data synchronisation. Mirroring, synchronisation and control are performed at the packet level, thus allowing high availability of software and servers not designed for hot standby operation.
GB0723115A 2007-11-27 2007-11-27 Method and system for providing hot standby capability for computer applications Active GB2455075B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0723115A GB2455075B (en) 2007-11-27 2007-11-27 Method and system for providing hot standby capability for computer applications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0723115A GB2455075B (en) 2007-11-27 2007-11-27 Method and system for providing hot standby capability for computer applications

Publications (3)

Publication Number Publication Date
GB0723115D0 GB0723115D0 (en) 2008-01-02
GB2455075A true GB2455075A (en) 2009-06-03
GB2455075B true GB2455075B (en) 2012-06-27

Family

ID=38926042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0723115A Active GB2455075B (en) 2007-11-27 2007-11-27 Method and system for providing hot standby capability for computer applications

Country Status (1)

Country Link
GB (1) GB2455075B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8576725B2 (en) 2010-08-13 2013-11-05 Avaya Inc. Failover based on sending communications between different domains
EP2741471A1 (en) * 2012-12-07 2014-06-11 Alcatel Lucent Method, system and devices for content caching and delivering in IP networks

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774660A (en) * 1996-08-05 1998-06-30 Resonate, Inc. World-wide-web server with delayed resource-binding for resource-based load balancing on a distributed resource multi-node network
WO1999057620A2 (en) * 1998-05-04 1999-11-11 Sonera Oyj Distribution of a service request in a client-server architecture
US20030159083A1 (en) * 2000-09-29 2003-08-21 Fukuhara Keith T. System, method and apparatus for data processing and storage to provide continuous operations independent of device failure or disaster
US6742044B1 (en) * 2000-05-10 2004-05-25 Cisco Technology, Inc. Distributed network traffic load balancing technique implemented without gateway router
US20040172470A1 (en) * 2003-01-08 2004-09-02 Nec Corporation IP router, communication system and band setting method used therein and its program
US20050172161A1 (en) * 2004-01-20 2005-08-04 International Business Machines Corporation Managing failover of J2EE compliant middleware in a high availability system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5774660A (en) * 1996-08-05 1998-06-30 Resonate, Inc. World-wide-web server with delayed resource-binding for resource-based load balancing on a distributed resource multi-node network
WO1999057620A2 (en) * 1998-05-04 1999-11-11 Sonera Oyj Distribution of a service request in a client-server architecture
US6742044B1 (en) * 2000-05-10 2004-05-25 Cisco Technology, Inc. Distributed network traffic load balancing technique implemented without gateway router
US20030159083A1 (en) * 2000-09-29 2003-08-21 Fukuhara Keith T. System, method and apparatus for data processing and storage to provide continuous operations independent of device failure or disaster
US20040172470A1 (en) * 2003-01-08 2004-09-02 Nec Corporation IP router, communication system and band setting method used therein and its program
US20050172161A1 (en) * 2004-01-20 2005-08-04 International Business Machines Corporation Managing failover of J2EE compliant middleware in a high availability system

Also Published As

Publication number Publication date Type
GB0723115D0 (en) 2008-01-02 grant
GB2455075A (en) 2009-06-03 application

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Legal Events

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20090910 AND 20090916