SQL server 2008 enterprise DB mirroring

  • Hi,

    I'm trying to setup DB mirroring between 2 SQL 2008 servers each running enterprise edition for a DR (disaster recovery) solution. The IT provider with manages hosting has carried out the following :

    Cloned 3 servers:

    DMZ box

    Application Server

    DB server (10.100.1.98) cloned and given a new IP (10.102.1.12).

    Both Servers have exatly the same name SQL instances and same databases.

    while preparing to mirror a DB I noticed something odd or maybe not ?

    I backed up a test db(in full mode) (both servers have exact copies of a prod, test and development dbs) copied across to the new DR server tried to restore database WITH NORECOVERY option.

    When a flicked back to the production db server (10.100.1.98) I found the same db in restore mode.

    I would like to undestand why this is happenning although I have an idea but not sure if I'm right.

    Does the IT company which provides these servers as VMs need to clone the SQL with a different DB instance OR is there another way for me to do this ?, such as changing parameters, changing the existing db instance, installing a new sql instance?

    Currently both boxes have different IP adresses and different names BUT SQL instance as previously mentioned is the same.

    Thanks

    Jorge

  • Hi,

    check if the server name of the sql server have been also renamed.

    Check this with select @@servername.

    It should be <Servername>\<Instancename>.

    If the servername differs from the machine name rename it with following script and replace old_name, new_name and instancename:

    sp_dropserver 'old_name\instancename'

    GO

    sp_addserver 'new_name\instancename', local

    GO

    Check again if the @@servername is now set correctly.

    After this you can try again mirroring ... 🙂

    Greets

    pitcher

    [font="Arial"]Kind regards,

    Patrick Fiedler
    Consultant

    Fiedler SQL Consulting

    www.fiedler-sql-consulting.de
    [/font]

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