WANdisco's Subversion High Availability
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WANdisco's Subversion High Availability

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Subversion High Availability (http://www.wandisco.com) leverages WANdisco's unique replication technology to bring enterprise class reliability to Subversion. Subversion High Availability provides ...

Subversion High Availability (http://www.wandisco.com) leverages WANdisco's unique replication technology to bring enterprise class reliability to Subversion. Subversion High Availability provides continuous hot backup, while making failover and disaster recovery automatic and transparent for both developers and administrators. One or more backup servers can be placed on the same local area network (LAN) as the primary server, or located remotely over a wide area network (WAN).

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WANdisco's Subversion High Availability WANdisco's Subversion High Availability Presentation Transcript

  •  
    • Leverages the same replication technology as Subversion MultiSite.
    • Delivers transaction-aware continuous hot backup of the primary server to one or more backup servers over a LAN or WAN .
    • Meets a recovery point objective (RPO) of zero.
      • Everything up to the moment of failure is captured and recovered automatically without administrator intervention.
    • Meets a recovery time objective (RTO) of zero .
        • Users fail over to backup servers automatically and transparently without any interruption in service.
    • Ensures zero loss of data and no lost development time.
        • Eliminates the risk of human error during disaster recovery.
    • Significantly more cost effective than disk mirroring solutions that won’t work over a WAN.
    • Replicators used by WANdisco’s Subversion MultiSite are used to:
      • Ensure continuous hot backup of the primary server to one or more backup servers.
      • Provide self-healing capabilities to automate the recovery process when the primary server comes back online.
    • The failover agent automatically redirects clients to backup server(s) in the event of network or server failures.
    Architecture
  • Demo
  • Network Architecture
    • Reduces network traffic and bandwidth usage and costs
    • All reads are local and generate no WAN traffic.
    • Streaming on Persistent connection between servers.
      • Connection pooling used for multiplexing.
      • TCP 3-Way Handshake Eliminated.
    • Uses WANdisco’s own protocol over the WAN.
      • Eliminates normal SVN chattiness over the WAN
      • WAN roundtrip times are significantly reduced
    • Overcomes WAN performance issues with HTTP WebDAV Protocol.
      • Entire commit with multiple files can be sent over one connection, rather than opening and closing connections for each file.
    • Server Versions Supported
      • Subversion server versions 1.3 and above are supported.
    • Backend Support:
      • FSFS and Berkeley DB are supported.
    • Supported Clients
      • Subversion command line, SmartSVN, RapidSVN, TortoiseSVN, Subclipse, and any HTTP client that works with Subversion.
    • System Requirements
      • WANdisco for Subversion will run in any J2SE 1.5 or above compliant Java runtime environment. A minimum of 64 MB of RAM and 450MHz CPU is recommended for the server
    System Requirements
    • Meets a recovery point objective (RPO) of zero. Everything up to the moment of failure is captured and recovered.
    • Meets a recovery time objective (RTO) of zero. User access is restored immediately after a server failure or network outage.
    • Requires no retraining. Developers and administrators use the Subversion clients and tools they’re familiar with.
    • Backup servers can be on the same local area network (LAN) as the primary server, or located remotely over a wide area network (WAN).
    • Minimizes network traffic and bandwidth costs over a WAN.
    • Can be implemented standalone, or in conjunction with WANdisco’s Subversion MultiSite solution.
    Summary