CmdID / PowerShell / Cmdlets / Add
Add-DatabaseAvailabilityGroupServer
Use the Add-DatabaseAvailabilityGroupServer cmdlet to add a Mailbox server to a database availability group (DAG). Exchange PowerShell reference
From the Exchange PowerShell reference 6 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the name of the DAG to which the server is being added.-MailboxServerThe MailboxServer parameter specifies the Mailbox server to add to the DAG.-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.-SkipDagValidationThe SkipDagValidation switch specifies whether to bypass the validation of the DAG's quorum model and the health check on the DAG's witness when adding members to the DAG.-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.