CONFIGURATION GUIDE – NEC EXPRESS5800/R320e-M4 / Windows Server modelNEC Corporation Revision 5.3, December 2017 148.4 Operating SystemLicense definition (Windows Server 2012 R2 downgrade from Windows Server 2016)The basic way to understand Windows Server license definition of ft Server is not different from that of ageneral server. When invoking downgrade rights, the license definition is based on Windows Server 2016.It should be noted that licenses on ft Server are counted based on the number of physical cores, but whenOS of OEM version is used, licenses are counted based on the number of cores mounted in one system onft Server.Attention is required, on the other hand, in the case with OS (such as PKG version and VL version) otherthan OEM version, the above special rule of core counting on one system is not applied.---The system of counting server license transitioned from “CPU-based license” to ”CPU core-based license”.If the configuration is within 2 CPUs with 16 cores, the rule of counting licenses are the same as before,however, if it exceeds 2 CPUs with 16 cores, the rule differs from before.1. All physical cores in the server are required to be licensed.2. Each physical processor is required to be licensed with a minimum of 8 physical cores.3. Each physical server is required to be licensed with a minimum of 16 physical cores.[Ex.1] 12cores R320e-M4, 1CPU ' OEM version: 12 core licenses are required for the cores mounted on one system.but 16 core licenses are required according to the rule 3.other than OEM version: 24 core licenses are required for the cores mounted on both systems.[Ex.2] 12 cores R320e-M4, 2CPUs ' OEM version: 24 core licenses are required for the cores mounted on one system.other than OEM version: 48 core licenses are required for the cores mounted on both systems.8.5 Tower Conversion KitProduct Name / Description Part NumberTower Conversion Kit23 inch height pedestal with front bezelN8843-0058.6 Dust Proof FilterThe server supports the dust resistant feature. Choose the following kit to install the system in dusty places.Category Product Name / Description Part NumberFilter 4U-FT Dust FilterFor R320e Dust Proof filter 10 pcs, attachment brackets for thefront bezel includedN8847-002