| Feature | Dell PowerEdge R840 |
| Processor | Up to four Intel® Xeon® Scalable processors, up to 28 cores each |
| Memory | 48 DDR4 DIMM slots, Supports RDIMM /LRDIMM, up to 2666MT/s, 6TB max |
| Up to 12 NVDIMMs, 384GB Max | |
| Supports registered ECC DDR4 DIMMs only | |
| Storage controllers | Internal Controllers: PERC H730P, H740P, H330 Software RAID (SWRAID) S140 |
| Boot Optimized Storage Subsystem: HWRAID 2 x M.2 SSDs 120GB or 240 GB | |
| External PERC (RAID): H840 | |
| 12Gbps SAS HBAs (non-RAID):External-12Gbps SAS HBA (non-RAID),Internal- HBA330(non-RAID) | |
| Drive bays | Front drive bays: Up to 8x 2.5” SAS SATA (HDDs/SSDs) max 30TB, |
| or up 24 x 2.5” SAS/SATA (HDDs/SSDs) with up to 12 | |
| NVMe PCIe SSDs max 122TB, or up to 24 NVMe PCIe SSDs max 153TB | |
| Rear drive bays: Up to 2 x 2.5” SAS/SATA (HDDs/SSDs), max 7.68TB | |
| Power supplies | Platinum: 750W,1100W, 1600W, 2000W, 2400W Mix Mode/HVDC: 750W, 1100W1 |
| Titanium: 750W Hot plug power supplies with full redundancy option | |
| DC: 1100W 6 hot plugs fans with N +1 redundancy | |
| Embedded management | iDRAC9 with Lifecycle Controller iDRAC RESTful API with Redfish |
| iDRAC Direct Quick Sync 2 BLE/wireless | |
| Bezel | Optional LCD bezel or security bezel |
| OpenManage™ Software | OpenManage Enterprise OpenManage Mobile |
| OpenManage Essentials OpenManage Power Center | |
| Tools | Dell EMC Repository Manager iDRAC Service Module |
| Dell EMC Update Package OpenManage Server Administrator | |
| Dell EMC System Update OpenManage Storage Services | |
| Dell EMC Server Update Utility | |
| I/O & ports | Network Daughter Card Options Rear ports: Video, serial, 2 x USB 3.0 |
| 4 x 1GE, 4 x 10GE, 2 x 10GE+2 x 1GE, or 2 x 25GE Internal port: 1 x USB 3.0 | |
| Front ports: Video, 2 x USB 2.0, 1 managed (micro-sub), Video card: VGA | |
| dedicated IDRAC Direct USB. (Optional 1 x USB 3.0 only | |
| PCIe: Up to 6 x Gen3 slots, (4x16 slots or 2x16 + 4x8 slots) | |
| offered on the 8-drive configuration) | |
| Supported operating systems | Canonical® Ubuntu® LTS SUSE® Linux Enterprise Server |
| Citrix® XenServer® VMware® ESXi | |
| Microsoft Windows Server® with Hyper-V For specifications and interoperability details see | |
| Red Hat® Enterprise Linux Dell.com/Ossupport | |
| OEM-ready version available | From bezel to BIOS to packaging, your servers can look and feel as if they were designed |
| were designed and built by you. For more information, visit Dell.com/OEM. | |
| Dimensions | Form factor: Rack (2U) |
| Chassis Length:482mm | |
| Chassis Weight: 36.6kg | |
| Chassis depth: 812mm | |
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