No database on the second Exchange Server

Mikhail Firsov 1,876 Reputation points
2022-10-18T14:48:36.68+00:00

Hello!

After installing the second Exchange Server 2019 CU12 (no issues during installations) I was greatly surprised to see the newly-installed server does not have any mailbox database - I mean there always was a default database on each MB server installed and I remember I had posted the question here on MS forum regarding what is the best practice with this database on second (third..._ Exchange servers.
251628-x.png

Maybe I'm missing something here and this behaviour is now by design???

Regards,
Michael

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. LilyLi2-MSFT 1,981 Reputation points
    2022-11-04T10:20:23.28+00:00

    Hi @Mikhail Firsov ,

    In the installation of the second EXCH you provide:
    257222-web-capture-4-11-2022-17418-learnmicrosoftcom.jpeg
    We can see that in your second Exchange installation, although the paths are different, the names of the databases are all DB01. I think that is the problem.
    Database names should be unique in Exchange and using the same database name is not recommended.

    In my installation tests, if I used MdbName to specify the same database name (DB01), the results were the same as yours.

    If I use MdbName to specify a different database name (DB02 and DB02S), I will get the following normal results:
    257223-1.png


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  1. Mikhail Firsov 1,876 Reputation points
    2022-10-19T08:24:48.6+00:00

    Hi LiLyLi2-MSFT,

    "It is recommended that you sign in to the EAC to check if this server has a default mailbox database":
    251943-03.png
    251903-04.png

    Both Exchange Servers are 2019 installed on Windows Server 2022.

    "what would be the result if you used Get-MailboxDatabase directly?" - sorry, didn't get it: what does mean "directly"? I've posted the result of the Get-MailboxDatabase -Server EXCH2 above and that command was issued on EXCH2. Ommiting "-Server EXCH2" leads to the single output - "DB01 on EXCH1", exactly as in EAC.

    Regards,
    Michael


  2. Mikhail Firsov 1,876 Reputation points
    2022-10-20T08:52:33.583+00:00

    Hi imamitsingh,

    Thank yor for the reply!

    Unfortunately these links don't have the answer to my question.

    Roughly six months earlier I deployed two Exchange Servers CU11 and there was a default database on the second CU11 server - now I've taken exactly the same steps with CU12 but there's no default db on the second server... ???

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  3. Mikhail Firsov 1,876 Reputation points
    2022-10-28T09:06:38.957+00:00

    Hi LiLyLi2-MSFT,

    Thank you for the reply!

    Installation of EXCH1:

    .\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataON /Mode:Install /Roles:Mailbox /on:"TestENTERPRISE" /EnableErrorReporting /TargetDir:"C:\EXCHANGE" /MdbName:"DB01" /DbFilePath:"C:\EXCHANGE\DATABASES\DB01\DB01.edb" /LogFolderPath:"C:\EXCHANGE\DATABASES\DB01"

    Installation of EXCH2:

    .\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataON /Mode:Install /Roles:Mailbox /on:"TestENTERPRISE" /EnableErrorReporting /TargetDir:"C:\EXCHANGE" /MdbName:"DB01" /DbFilePath:"C:\EXCHANGE\DATABASES\DB01S\DB01S.edb" /LogFolderPath:"C:\EXCHANGE\DATABASES\DB01S"

    There's only one database on EXCH2 - DB01 - that's being replicated from EXCH1:

    255064-e1.png

    By the way, there's one more strange thing in this installation: as you see from above commands I prefer placing DB and log files to C:\EXCHANGE\DATABASES[ ] folder and I have never had any problems with that (I had been using the exact same commands recently when I was installing CU11), but this time the location of log files hasn't changed:

    255053-e2.png

    P.S. EXCH2 is up and running flawlessly!