We have a two node cluster. Usually we use VMWARE Esxi for virtualization. We do clustering with in two virtual machine.
when one node fails/restarts it takes around 10 Min for cluster disks to be available on the other node.
=> so while fail over to passive node application services will take ~15 min to start on the passive node.
=>Application services needs to be configured such that they starts after disks are available on other node.
Mithun Dey
Web: http://cloudmithun.wordpress.com
If this my give your necessary resolution please mark it as Answre.