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Continuous Replication Deep Dive White Paper is here...

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The_Exchange_Team
Platinum Contributor
Jul 01, 2008

Many of you have been wondering how continuous replication works in Exchange 2007.  The Continuous Replication Deep Dive whitepaper discusses how log shipping, log inspection, and log replay work within Exchange 2007.  In addition, the paper discusses the mechanics of how scheduled and unscheduled outages are handled in a continuous replication enabled environment.  A big thanks goes to Scott Schnoll, Becky Benfield, Ramon Infante, and Alex Wetmore for helping me put this paper together.  Check it out here: http://technet.microsoft.com/en-us/library/cc535020(EXCHG.80).aspx.

- Ross Smith IV

Updated Jul 01, 2019
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14 Comments

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  • Deleted's avatar
    Deleted
    Jul 02, 2008
    pesos,

    Yes indeed - until you enter a product key, Exchange will be in let's call it "Standard" mode:

    http://technet.microsoft.com/en-us/library/bb232170.aspx

    "Even though Exchange 2007 and Exchange 2007 SP1 come in two edition offerings, these are licensing editions that are defined by a product key. There is a single set of binary files for each platform (one for x64 systems and one for x86 systems), and the same binary files are used for both editions. When you enter a valid license product key, the supported edition for the server is established. See "Evaluations and Product Keys" below for other important information about product keys."
  • Deleted's avatar
    Deleted
    Jul 02, 2008
    I'm hoping it's because I hadn't entered the product key yet (brand new install) - thanks!

    Are there plans to allow backups of SCR targets?  Or should I look into doing CCR over the wan if I want to do that?
  • Deleted's avatar
    Deleted
    Jul 02, 2008
    Sounds like you installed Standard Edition Exchange, rather than Enterprise Edition.  Upgrade to Enterprise, and you can have up to 50 SGs...
  • Deleted's avatar
    Deleted
    Jul 02, 2008
    So I got very excited about SCR. I went ahead and set up a 2nd server with just the mailbox role. Enabled SCR on a couple of storage groups - great!

    The limitations of having one database per SG didn't bother me - I do this anyway for performance reasons so I have about 24 storage groups and one database per SG.

    So I continued on, and then all of a sudden I get:
    Enable-StorageGroupCopy : The number of standby continuous replication targets on this computer has reached the limit: 5

    WHAT?????

    Are you kidding me? So you can only use SCR with 5 storage groups, and only one db per sg, so that means 5 databases total? This means pretty gigantic databases.

    This is pointless for all but small shops, which likely don't have the budget or need to do SCR.  Do I need to think about doing CCR over a wan instead?

    Am I missing something?