In my company, we have a SQL Server 2008 R2 Cluster, a few days ago, we doubled the CPU and memory of one cluster node.
We have 1 HP BL680C G7 with 2 Intel Xeon X7550 2Ghz and 64Gb RAM.
We doubled this hardware, now we have 64 Logical Processors and 131Gb RAM.
The problem is, my server is VERY slowly, I have to set SQL Server to use just 2 processors and 60Gb RAM, and this way, it works.
My doubt is, we need to configure or execute something to make SQL use all new hardware?