I have a 2-Node SQL 2014 cluster running on (2) Server 2012R2 nodes. These are virtual machines sitting on a 2-node ESX5.5 cluster (vSphere5.5). Each node has 16GB RAM and 8vcpus. Memory is configured to allow SQL to only use 13GB of the 16GB.The SQL nodes are split across each ESXi host. Storage is presented to the SQL cluster nodes via in-guest iscsi LUNs to a backend SAN array.Front end application is experiencing slowness when performing a task. I logged on to the SQL cluster nodes, and it is even slow expanding the databases. When I failover, the application seems to go back to acceptable performance. I am no SQL DBA or expert, but know my way around the SSMS console.What quick steps can I do to check where the bottleneck on the SQL cluster is?How can I determine if it needs additional memory, etc.?What are some high-level post installation tasks I should complete?
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