“The IP Address 'x.x.x.x' is already in use. To continue, specify a different IP address” SQL Server 2008 cluster setup error

Today I want to talk about my experience with one of the most strange setup errors installing SQL Server in a cluster. In this particular case I was helping the customer to install a new SQL Server 2008 R2 instance in a three-node cluster. The Windows cluster was already running with two instances, each one…

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Unexpected Behavior Setting Up Firewall Rules with Clustered SQL Server Instances

If you have ever try to setup firewall rules in your network to manage access to SQL Server you have probably found a somehow weird behavior when connecting to a clustered instance. In this particular case my customer was finding that the rules she had configured on her Windows firewall were working fine when connecting…

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