Home > DAG, Exchange, Exchange 2010, Microsoft > RPC Timeout when adding DAG node

RPC Timeout when adding DAG node


http://social.technet.microsoft.com/Forums/en-GB/exchange2010/thread/1a709b6b-ba35-47f4-9919-cd474fa44912

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
WARNING: The operation wasn’t successful because an error was encountered. You may find more details in log file
"C:\ExchangeSetupLogs\DagTasks\dagtask_add-databaseavailabiltygroupserver.log".
A server-side database availability group administrative operation failed. Error: The operation failed with message: Error 0x71a (The remote procedure call was cancelled) from cli_RpccAddNodeToCluster
    + CategoryInfo          : InvalidArgument: (:) [Add-DatabaseAvailabilityGroupServer], DagTaskOperationFailedException
    + FullyQualifiedErrorId : BC0535B9,Microsoft.Exchange.Management.SystemConfigurationTasks.AddDAG

 

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 Sad smile

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