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Exchange Database size

ESJ 41 Reputation points
2023-08-24T12:03:53.09+00:00

I want to move some mailboxes from one DB to another in Exchange 2016.

I want to move 10 GB of data. See the size details below.

The database is in d drive and d drive has 35 GB free space.

I know that white space will get added as we move more items.

I do not see a limit set the registry . I looked for this entry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS<Server Name>\Private-<database GUID>, but I do not see server names under MSExchangeIS.

How can I increase the database size ?

DatabaseSizeAvailable 247.9 MB (259,981,312 bytes)

NewMailboxSpace 85.09 MB (89,227,264 bytes)

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  1. Shaofan Lv-MSFT 6,915 Reputation points Microsoft Vendor
    2023-08-25T02:21:52.2633333+00:00

    Hi @ESJ

    You could increase the size of the database by modifying the registry.

    Please refer to the steps in the workaround section of the official doc.

    https://learn.microsoft.com/en-us/exchange/troubleshoot/administration/exchange-cannot-mount-database-larger-than-1024-gb#workaround

    Please note that if you are using the Exchange 2016 Standard Edition, the default database size limit for the Standard Edition is 1,024 GB. There is no default database size limit for the Enterprise Edition. The Exchange store checks database size limits periodically and dismounts a database when the size limit is reached.

    Regards

    Shaofan

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