ASRock Rack
ASRock Rack 2U4N-F/C621-M3 2U 4-node barebone server
A 2U rackmount barebone holding four dual-socket nodes, each supporting Xeon Scalable CPUs, six-channel DDR4, four 2.5-inch drives and two PCIe 3.0 x16 slots, with 1600W redundant power and IPMI 2.0
- Form Factor2U Rackmount
- CPU TypeSupports 2nd/1st Gen Intel Xeon Scalable Processors
- CPU SocketLGA 3647
- Installed CPUNo CPU Installed
- Max Processors2
- North BridgeIntel C621
- 2U rackmount packs four independent server nodes
- dual LGA 3647 sockets support Xeon Scalable CPUs
- sixteen DDR4 2666/2400 RDIMM/LRDIMM slots across six channels
- each node holds four 2.5" drives with SATA or NVME options
- redundant 1600W power supply plus IPMI 2.0 dedicated LAN
Dense Compute Platform
The ASRock Rack 2U4N-F/C621-M3 is a 2U rackmount barebone that houses four independent server nodes. Each node accepts up to two LGA 3647 processors and provides six-channel DDR4 memory across sixteen DIMM slots. A 1600 W redundant power supply and sixteen 2.5-inch drive bays are shared across the chassis.
Target Deployment Fit
This platform suits builders creating high-density clusters for virtualisation, HPC or cloud workloads where many nodes share rack space and power. Operators needing GPU acceleration, OCP 3.0 mezzanine cards, or more than two PCIe 3.0 x16 slots per node should evaluate other form factors.
Deciding Specification
Each node delivers two PCIe 3.0 x16 low-profile slots and four SATA 600 ports with an option for two NVME devices. That expansion layout determines whether the node can host the required accelerators, storage controllers or networking cards for the intended workload.
Highlights
- 2U rackmount packs four independent server nodes
- dual LGA 3647 sockets support Xeon Scalable CPUs
- sixteen DDR4 2666/2400 RDIMM/LRDIMM slots across six channels
- each node holds four 2.5" drives with SATA or NVME options
- redundant 1600W power supply plus IPMI 2.0 dedicated LAN
Specifications
| Brand | ASRock Rack |
|---|---|
| Model | 2U4N-F/C621-M3 |
| Form Factor | 2U Rackmount |
| CPU Type | Supports 2nd/1st Gen Intel Xeon Scalable Processors |
| CPU Socket | LGA 3647 |
| Installed CPU | No CPU Installed |
| Max Processors | 2 |
| North Bridge | Intel C621 |
| Memory Slots | 16 x 288Pin |
| Installed Memory Size | No Memory Installed |
| Memory Type Supported | DDR4 2666/2400 RDIMM and LRDIMM |
| Channel Supported | 6 Channel |
| Serial ATA | 4 x SATA 600 |
| M.2 | 1 (support 2280 only) |
| Video Memory | ASPEED AST2500 |
| PCI Express | 2 x PCIe3.0 x16 (Low Profile card) |
| Max. LAN Speed | 1 Gigabit |
| VGA | 1 x mini Display port (MiniDisplay port, Dsub to miniDisplay cable) |
| Rear USB | 2 x USB 3.2 Gen1 |
| RJ45 | 1 x (IPMI) Lan port (RJ45) |
| Max. Power | 1600W Redundant (1+1) PSU |
| Dimensions | 3.41" x 17.41" x 32.28" |
| Shipping weight | 44.27 kg |
| Package size | 953 × 635 × 254 mm |
Questions about this item
What does the 16 DIMM slots per node mean once the server is populated?
Each of the four nodes accepts up to 16 DDR4 2666/2400 RDIMM or LRDIMM modules across six memory channels for a total of 16 slots per node.
How does the PCIe 3.0 x16 interface limit expansion cards in practice?
Each node provides two PCIe 3.0 x16 low-profile slots and supports an OCP 3.0 PCIe 3.0 x16 mezzanine card for networking or storage add-in cards.
What physical space and drive bays does the 2U chassis require for installation?
The 2U rackmount enclosure measures 3.41 x 17.41 x 32.28 inches and holds 16 front-accessible 2.5 inch drive bays, four per node.
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