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Enable-MetaCacheDatabase

Use the Enable-MetaCacheDatabase cmdlet to enable the metacache database on Exchange 2019 Mailbox servers. Exchange PowerShell reference

From the Exchange PowerShell reference 3 parameters Its page in the reference

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Parameters

3 in the Exchange PowerShell reference
-ServerThe Server parameter specifies the Mailbox server where you want to enable the metacache database.
-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.
-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.