TheSQLGuru (3/15/2013)
Thought just occurred to me: have you checked the BIOS settings in both servers to see if there is a difference there that could be causing "identical" machines to not behave identically?? NUMA (or at least memory interleaving) may be disabled in the BIOS on one of them and not the other...
This could definitely be the case. We had some BIOS issues with the machines when they came in and had to make changes to a few of them to get them working. I'm going to read up on NUMA (seeing as I know so little about it) and at my next maintenance window I'll compare BIOS settings between the two. Thanks!