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Hub Transport Message Queue Site Resiliency

Unanswered Hub Transport Message Queue Site Resiliency

  • Friday, May 04, 2012 1:33 PM
     
     
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    Hi,

    I want to know strategy for Hub Transport Message Queue Site Resiliency options in the event of loss of a whole data center while there are still messages in transit on Hub transport server. How we can protect messages which are still in HT queue and they are not yet send over to MBX server (Shadow redundancy process not yet started). We need to achieve Zero Message loss.

    Is it possible anyway to send a copy of message which received on HT or ET level  from Site A to other HT/ET at Site B ??  I know about Shadow redundancy Promotion (SRP)….can we somehow configure ET/HT layer using SRP shadow message to remote site??

    We already got 2 Active data centers with Exchange 2010 servers except HT layer all other layers are redundant and losing a messages at other layer is already covered.

    I would really appreciate any help.

    Thanks,

    JS

     

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  • Friday, May 04, 2012 1:39 PM
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    Check out the transport dumpster description in :

    Understanding High Availability and Site Resilience

    • Proposed As Answer by CastinluModerator Tuesday, May 15, 2012 1:23 AM
    • Marked As Answer by CastinluModerator Tuesday, May 15, 2012 1:24 AM
    • Unmarked As Answer by JSyedPFPT Tuesday, May 15, 2012 7:09 PM
    • Unproposed As Answer by JSyedPFPT Tuesday, May 15, 2012 7:10 PM
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  • Friday, May 04, 2012 2:46 PM
     
     
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    I have seen this link and other related links on the web...but they don't give me answers of my questions....As i mentioned before i need to achieve Zero Message loss and there should not be any single at HT point of failure and all Exchange layers should be site resilient....mail in HT queue are single point of failure before the start of shadow redundancy process and at the same time of u loose that HT server or whole site due to disaster.....I hope i have made my point clear....
     
  • Monday, May 07, 2012 8:37 AM
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    hi,

    If the HUB server is down when messages are in transit on Hub transport server, the message will be retry and resubmit until the message  expire. So if you also want to prevent these message from being lost,  you should recover your exchange server before the message expire. Otherwise the message will be lost.  You can't achieve your goal by using site resiliency.

    hope can help you

    thanks,

    CastinLu

    TechNet Community Support


     
  • Monday, May 07, 2012 11:32 AM
     
     
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    Here I am talking about a scenario where server recovery is not possible at all and whole site goes down completely due to disaster....in these 2 situations how i can mitigate the risk of loosing messages.....?? again I need to make sure Zero Message loss......
     
  • Tuesday, May 08, 2012 6:22 AM
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    hi,

    According to your descripition, in my mind there is no way to achieve this. This is a very extreme conditions. As i said before,  you should recover your exchange server before the message expire. Otherwise the message will be lost.

    hope can help you

    thanks,

    CastinLu

    TechNet Community Support

     
  • Tuesday, May 08, 2012 11:19 AM
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    I dont think you can ever absolutely guarantee no message loss.  The built-in architecture in Exchange 2010 goes a long way to ensure that any losses will be at a minimum.

    • Proposed As Answer by CastinluModerator Tuesday, May 15, 2012 1:23 AM
    • Marked As Answer by CastinluModerator Tuesday, May 15, 2012 1:24 AM
    • Unmarked As Answer by JSyedPFPT Tuesday, May 15, 2012 7:09 PM
    • Unproposed As Answer by JSyedPFPT Tuesday, May 15, 2012 7:10 PM
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  • Tuesday, May 08, 2012 1:52 PM
     
     
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    Did any one used Double-take Availability software to protect HT/ET roles from Site A to Site B.... ?? if anyone can share his experience it would be great.....thx
    • Edited by JSyedPFPT Tuesday, May 08, 2012 1:55 PM
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  • Friday, May 11, 2012 2:20 PM
     
     
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    I am trying to achieve something like Postifx servers could be configured using DRBD replication.....data block level replication....so every message received on Primary Postfix server in Site A is getting replicated in real-time to Secondary Postfix server in Site B. This way we have backup of every message which could be recovered in case of disaster....

    Does anyone know something similar for Exchange Infrastructure which we can use on HT/ET level....??

    Thanks,

    JS