Commvault email archival in an Exchange 2010 / 2016 co-existence environment

Last post 01-23-2017, 10:15 AM by tcottrell. 3 replies.
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  • Commvault email archival in an Exchange 2010 / 2016 co-existence environment
    Posted: 01-18-2017, 10:26 PM

    We plan to deploy Exchange 2016. Need to understand what constraints exist with Exchange 2016 with CommVault email archival in its present and future state. 

    We will stand up two new Exchange 2016 servers and those will be handling all EWS requests.  The CDO library is discontinued in 2016 though I believe CommVault only uses 2016.  Any requests to a 2010-based mailbox is proxied through a 2010 CAS server. Those 2010 CAS servers are where the current CommVault agents were installed.  The existing URLs / DNS entries of webmail.xxxx.local and outlook.xxxx.internal for Exchange 2010 would point to the new Exchange 2016 load balanced IP address, instead of the 2010 load balanced IP address.

    So the questions are:

    - Can the existing CommVault environment handle going via Exchange 2016 if the agent isn’t installed on 2016 (but remains on 2010)?

    - Would CommVault / Exchange be okay if we provided a new URL to access EWS (or whichever protocol) that bypassed the 2016 Client Access Services and instead went direct to the existing Exchange 2010 CAS?

    - If a user’s mailbox is still on an Exchange 2010 mailbox, will retrieval continue to work?  What about archival?

    - If a user’s mailbox has been moved to 2016, will retrieval and archival continue to work?

    - Will we need to install the CommVault agent on the Exchange 2016 servers? Is it compatible?  Or can we just use it on the Exchange 2010 servers?

    Retrieval is critical, ongoing archival is less so.  We want to plan moving mailboxes to Exchange 2016 and Online so the behaviour and limitations of CommVault archival and retrieval are key factors in our strategy.

  • Re: Commvault email archival in an Exchange 2010 / 2016 co-existence environment
    Posted: 01-19-2017, 8:48 AM

    What CommVault version are you currently running?  As long as your CommVault back end is Version 10 or above, and your addins are also at the same level you will have no issues with retrievals as they are not dependant on Exchange at all.  They go through the Web Console instead.  It sounds like you are still in a version 9 deployment which is going to be an issue for you as there is no support for Exchange 2016.

  • Re: Commvault email archival in an Exchange 2010 / 2016 co-existence environment
    Posted: 01-21-2017, 7:10 PM

    Yes, current exchange agent version is 9 on DAG

    Appreciate if you could answer the questions in my original thread.....

  • Re: Commvault email archival in an Exchange 2010 / 2016 co-existence environment
    Posted: 01-23-2017, 10:15 AM

    Short answer here is no, your environment is not going to work as it stands.  Prior to moving to Exchange 2016 you should upgrade your CV environment and Outlook Add-Ins to V11.  I would recommend reviewing the transition documentation prior to doing so:

    http://documentation.commvault.com/commvault/v11/article?p=products/fs_archive_exchange/c_transition_exmba_to_oneex_overview.htm

    Since Exchange 2016 support was never built into version 9, recalls would likely not function.

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