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How do you define a "close-by data center" when setting up the system replication

Hi:

Recently I'm being asked by a customer if they can change the replication mode of tier2-tier3 from async to sync as it's been supported from SPS12 and any detail spec. I checked the administration guide and the definition is you can configure tier2-tier3 with sync when "Tier 3 is used for disaster recovery in a second close-by data center." But how do we definite "close-by data center"? Any detail spec or limitation? Like how far is it between tier2 and tier3? And any network bandwidth limitation?

Thanks

Steven

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1 Answer

  • Best Answer
    Oct 16, 2017 at 08:48 AM

    Synchronous replication only supports distances of up to 100 km. Async should be used for distances over 100kms.

    A simple google search brought me here, which lists all the limitations.

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