duplicate server names (in different domains)

  • Q: Our sysops group is planning to change the names of the SQL Servers located in our Disaster Recovery site (now in it's own new network domain) to be the same as the production server names.

    Does anybody have experience with this setup? Are there any gotchas to the envisioned remedy of using fully-qualified names everywhere? What else will we need to make sure to do?

    Any advice is appreciated, thanks.

  • No problems would incur if you have the application also setup at the DR site so that the application can be brought up along with the DB.

    Cheers,
    Sugeshkumar Rajendran
    SQL Server MVP
    http://sugeshkr.blogspot.com

  • If it's a cold site (no connectivity back to the existing site) or if connectivity where name resolution comes into play is prohibited, there shouldn't be any significant issues.

    However, if you have applications which use the network service to connect to other servers, such as Microsoft's CRM 3.0 product, there may be an issue. This is because the computer account in Active Directory is what is seen as connecting and unless their doing a restore of the Active Directory database, simply creating a computer account with the same name will result in a different GUID/SID. These won't match up connecting into SQL Server because of the GUID/SID difference between what is now in the directory and what is stored in the sysxlogins/sys.server_principals system views.

    K. Brian Kelley
    @kbriankelley

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