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| Model | D ELL R940 Server |
| Processor | Up to four Intel processors ® Xeon ® SP, Up to 28 cores |
| Memory | 48 DDR4 DIMM slots, supporting RDIMM/LRDIMM, with speeds up to 2666 MT/s and a maximum of 6 TB up to 12 NVDIMMs, up to 192 GB. Only supports Registered ECC DDR4 DIMM. |
| Number of Storage Processor (SP) | Internal controllers: PERC 1408, H330, H740P Launch optimized storage subsystem. External HBA (RAID): H840. External HBA (non RAID): 12 Gbps SAS HBA. |
| Drive Bay | Up to 24 2.5-inch SAS/SATA (HDD/SSD), including up to 12 NVMe PCIe SSDs, with a maximum capacity of 122 TB. |
| Power Supplies | Platinum level 1100 W, 1600 W, 2000 W, 2400 W, 336-380 VDC 1100 W; Gold grade 48 VDC 1100 W. |
| Embedded management | IPMI 2.0 compatibility iDRAC9 with Lifecycle Controller (Express, Enterprise). Quick Sync 2 wireless module (optional). |
| Barrier | Optional LCD panel |
| OpenManage ™ software | OpenManage Enterprise, OpenManage Essentials, OpenManage Mobile, OpenManage Power Center. |
| Form Factor | 3U rack server |
| Integration and Connection | Integration: Microsoft ® System Center, VMware ® vCenter ™, BMC Software. Connection: Nagios and Nagios XI, Oracle Enterprise Manager, HP Operations Manager, IBM Tivoli Netcool/OMNIbus, IBM Tivoli ® Network Manager, CA Network and Systems Management. |
| Safety | TPM 1.2/2.0 (optional) Firmware signed with encryption secure boot. |
| I/O and ports | Network Subcard Options 4 x 1 Gb, 4 x 10 Gb, 2 x 10 Gb+2 x 1 Gb, or 2 x 25 Gb. Front end ports: video, 2 USB 3.0, dedicated IDRAC direct USB. Backend ports: video, serial, 2 USB 3.0, dedicated iDRAC network port. Graphics card: VGA. Up to 13 Gen3 slots (3 x8 + 10 x16). |
| Supported operating systems | Canonical ® Ubuntu ® LTS, Citrix ® XenServer ®, Microsoft Windows Server using Hyper-V ®, Red Hat ® Enterprise Linux, SUSE ® Linux Enterprise Server, VMware ® ESXi. |