RPC Timeout when adding DAG node
Recently had a customer with a WAN-split DAG – in short the first node was in the UK and they wanted a second node in Singapore adding.
Got the following error message;
Add-DatabaseAvailabilityGroupServer -Identity DAG -MailboxServer SINGAPORE
In short, this was due to a the link between myself and Singapore being too slow – which confused me slightly as I thought it had been uplifted in 2010.
A quick call to the Microsoft partner helpline, and I got this cleared up;
In RTM the RPC timeout is 5 minutes – also DAG links must be <250ms ping on average (to be supported)
In SP1 the RPC timeout is 10 minutes – also DAG links must be <500ms ping on average (to be supported)
Sorry Mr Customer, your on RTM