1. Log into Exchange Admin Center.
First we need to log into the Exchange Admin Center.
2. Navigate to the Servers >> Databases tab.
Then to create a Mailbox Database we need to navigate to the "Servers" tab on the left hand side. Then we need to click on the "Databases" tab along the top.
3. Click the + "New" button.
To create a new Database we need to click on the + "New" button.
4. Specify a database name, server, database paths and whether to mount the database.
Specify a database name. Click the "Browse" button and specify what server you want the database to be created on. Then choose whether or not you want to automatically mount the database when it has been created, using the "Mount this database" checkbox. You can use the tips to help you understand the information needed in each field. Click the "Save" button.
5. Restart the Microsoft Exchange Information Store service on the mailbox server.
You will receive a warning to restart the Microsoft Exchange Information Store service. Click "Ok" to acknowledge. Restart this service on the mailbox server. You can do this through Start >> Administrative Tools >> Services. Note, that when you do this all databases will be dismounted so you may wish to do this during a planned maintenance window. You database is now ready to receive mailboxes.
6. To edit a database
To edit the database select it and click the "Edit" (pencil) button. Click "Save" once you have made your changes.
7. To delete a database
To delete the database select it and click the "Remove" (trashcan) button. Click "Yes" to Confirm.
Note: You will not be able to delete the database if Exchange detects mailboxes in the database.
8. Two useful PowerShell commands shown are Get-MailboxDatabase and Move-DatabasePath.
These are both executed from the Exchange Management shell. "Get-MailboxDatabase" will return the databases on your Exchange Server. "Move-DatabasePath" will allow you to specify your edb file path and log folder path. Be sure any database names or folders that include spaces are wrapped in "s. Be sure to perform the move during a maintenance window unless you know that no users are using the database. Once the move is complete, you can use "Get-MailboxDatabase" to confirm your move.