We have a virtual machine running Windows Server 2008R2. When we allocate 200GB RAM it is amazingly stable and runs forever with no issues.
We upped it to 350GB and it immediately became unstable. Services would stop or become unresponsive and it blue screened after 2 days. It was running under KVM and we thought KVM was the problem. So we switched to VMware, created a new VM from OVF template but still have the exact same problem.
I've raised support with Cisco and they blamed VMWare. When I raised support with VMware they blamed MS. I'm starting to think they are correct because it was the same issue on KVM.
Does anyone know of an issue with allocating more than 200GB of ram to windows 2008R2?
BTW, it is currently running SP1 but we have some errors with installing updates so it doesn't yet have all the latest patches.