Mirroring - how many databases

  • I'd be interested to hear if anyone has set up multiple mirrored databases in a production environment and how many.

    Also interested if anyone mirrors on clustered sql server and if failover has been tested successfully.

    Lastly anyone mirroring on multiple instances in production.

    [font="Comic Sans MS"]The GrumpyOldDBA[/font]
    www.grumpyolddba.co.uk
    http://sqlblogcasts.com/blogs/grumpyolddba/

  • Sat in a briefing by Microsoft on this one. The most the speaker (one of the program managers at Microsoft) had seen mirrored from one server was 20, and that was in a purely test scenario at Microsoft. He said if numbers are creeping up that high, another solutions is probably necessary.

    K. Brian Kelley
    @kbriankelley

  • It sounds too familiar ... as if it is using the the old replication algorithm of processing things ...

    RegardsRudy KomacsarSenior Database Administrator"Ave Caesar! - Morituri te salutamus."

  • Microsoft have indicated to me a max of 10 mirrors per instance and you need a really good line/link . I was hoping to find evidence of users deploying mirroring in production.

    I understand that there can be issues with clustered servers mirroring .. seems no-one will own up to using mirroring !!!

    [font="Comic Sans MS"]The GrumpyOldDBA[/font]
    www.grumpyolddba.co.uk
    http://sqlblogcasts.com/blogs/grumpyolddba/

  • Mirroring didn't gain full support until SP1 and since that is really new, not a lot of folks have likely implemented it in production as of yet.

    K. Brian Kelley
    @kbriankelley

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