Enterprise Software

Images: NSI Software's DoubleTake Part 2

By // July 18, 2006, 8:41 AM PST // billdetwiler

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  • Double-Take Failover Control Center

    In his The Hot Button blog, TechRepublic columnist Steven Warren outlined how you can provide high availability with Microsoft SQL Server and NSI Software's DoubleTake. This gallery's 12 screenshots show you how to configure DoubleTake for SQL Server failover.

    © CNET Networks - Submitted by Steven Warren

  • Adding a Target machine

    © CNET Networks - Submitted by Steven Warren

  • Adding a Monitor

    © CNET Networks - Submitted by Steven Warren

  • On this window, you can select your failover to be Automatic or Manual. Secondly, you can also decide what items you want to failover. Once you have chosen your options, click Scripts.

    © CNET Networks - Submitted by Steven Warren

  • This is where you will attach your postover and preback batch file scripts. In the event of a failover, the scripts will shut down the specific services and start them on the Target server. When a failback occurs, it will do the opposite. Without attaching these scripts, this functionality will not work.

    © CNET Networks - Submitted by Steven Warren

  • The SQL Servers that DoubleTake is currently monitoring

    © CNET Networks - Submitted by Steven Warren

  • When a failover occurs on the Source machine, your target machine will begin to process the requests for both machine names and IP addresses as shown in here.

    © CNET Networks - Submitted by Steven Warren

  • From the Failover Control Center, shown here, you can test the failover process.

    © CNET Networks - Submitted by Steven Warren

  • Performing a manual failover to test the setup.

    © CNET Networks - Submitted by Steven Warren

  • The manual failover in progress

    © CNET Networks - Submitted by Steven Warren

  • Once the failover is complete both IP addresses will respond to ping commands and requests from the network until you fix the downed server.

    © CNET Networks - Submitted by Steven Warren

  • The downed server

    © CNET Networks - Submitted by Steven Warren

Double-Take Failover Control Center

In his The Hot Button blog, TechRepublic columnist Steven Warren outlined how you can provide high availability with Microsoft SQL Server and NSI Software's DoubleTake. This gallery's 12 screenshots show you how to configure DoubleTake for SQL Server failover.

© CNET Networks - Submitted by Steven Warren

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By Bill Detwiler

Bill Detwiler is Editor in Chief of TechRepublic and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop support specialist in the ...