Exchange 2013 - Default mailbox DB created (mailbox database 999999999) - Can it be deleted?

If I add a new mailbox server to the DAG is always seems to create a default mailbox database that we don't need. Problem then is because there is only one copy it fails database redundancy and database availability checks (because there is onkly one copy).

Can we delete this database at all?
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paulfoelAsked:
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MAS (MVE)EE Solution GuideCommented:
Hi,
Yes you can delete but you will have to move system mailboxes and user mailboxes  to another mailbox database.These two command will move your system mailboxes and user mailboxes to database2.
Get-Mailbox | New-MoveRequest -TargetDatabase "database2"

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Get-Mailbox -Arbitration | New-MoveRequest -TargetDatabase "database2"

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Thanks
MAS
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paulfoelAuthor Commented:
Thing is I dont know how but there are not even any arbitration mailboxes on there.
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MAS (MVE)EE Solution GuideCommented:
Try these commands. These will list you the system mailboxes and user mailboxes. If both shows return no results you can remove the database.
Get-Mailbox -Arbitration

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Get-Mailbox

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To remove mailbox database.
Remove-MailboxDatabase "Mailbox Database 0716284986"

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Note: This command will not run successfully if your mailbox database holds mailbox. It will return an error  "This mailbox database contains one or more mailboxes, mailbox plans, archive mailboxes, or arbitr.................................."

Thanks
MAS
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