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Rack Server (2U) Product

Overview

A rack server is a computer built to live in a data-center rack rather than on a desk. The 2U format means it is two rack units tall, so dozens fit in a single cabinet. Density drives every design choice: components pack tightly front to back, airflow runs in one straight path, and almost every serviceable part slides out without tools so a technician can swap it while neighboring servers keep running.

The machine starts with the Chassis & Rails, a folded sheet-metal box on Slide Rail rails. Inside, the Server Motherboard carries two CPUs, registered memory, and a BMC (Baseboard Mgmt Controller) for lights-out management. Storage rides in the Drive Backplane & Bays, populated with Solid-State Drive and Hard Disk Drive units and driven by a RAID / HBA Card. Air is moved by the Cooling Fan Wall, expansion cards mount on PCIe Riser cages, and two hot-swap Power Supply modules keep the server alive if one fails.

How it works

Cold air enters the front, crosses the drives, passes the fan wall, and exhausts hot at the rear. The dual-socket motherboard runs the workload; its baseboard management controller is a second tiny computer that watches temperatures, controls fan speed, and lets an administrator power-cycle or reinstall the server remotely even when the main system is off.

Data lands on the backplane, which fans a few controller links out to every bay through a SAS expander, so any drive is reachable from the RAID / HBA Card. That card stripes data across drives for speed and parity for safety, holding recent writes in cache that a supercapacitor flushes to flash on power loss. The PCIe Riser turns the board's vertical slots sideways to fit under the 2U lid, where Network Interface Card cards connect the server to the network. Redundancy is the theme throughout: two power supplies, paired fans, and tool-less carriers mean a single failure is a hot-swap, not an outage.

Build & assembly graph

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Bill of materials

12 top-level lines · 86 rows shown · 2,032 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Chassis & Rails 6 parts rack-server-chassis 1 8 assembly
1.1 Sheet Metal Panel sheet-panel 1 part
1.2 Top Cover rack-server-top-cover 1 part
1.3 Air Shroud rack-server-air-shroud 1 part
1.4 Slide Rail rack-server-slide-rail 2 part
1.5 Rack Ear Bracket rack-server-ear-bracket 2 part
1.6 Fastener Set fastener-set 1 part
2 Server Motherboard 9 parts rack-server-motherboard 1 748 assembly
2.1 Bare PCB pcb-bare 1 part
2.2 CPU Socket (LGA) rack-server-cpu-socket 2 part
2.3 Compute SoC Module soc-module 1 part
2.4 RDIMM Slot rack-server-dimm-slot 16× 16 part
2.5 VRM Phase 3 parts rack-server-vrm 4 15 assembly
2.5.1 VRM Power Stage rack-server-vrm-mosfet 8 part
2.5.2 VRM Inductor rack-server-vrm-inductor 4 part
2.5.3 SMD Passive (R/C/L) smd-passives 12× 48 part
2.6 BMC (Baseboard Mgmt Controller) 3 parts rack-server-bmc 1 42 assembly
2.6.1 BMC ASIC rack-server-bmc-soc 1 part
2.6.2 BMC/BIOS Flash rack-server-bmc-flash 1 part
2.6.3 SMD Passive (R/C/L) smd-passives 40× 40 part
2.7 CPU Heatsink rack-server-cpu-heatsink 2 part
2.8 Connector connector 24× 24 part
2.9 SMD Passive (R/C/L) smd-passives 600× 600 part
3 Drive Backplane & Bays 6 parts rack-server-drive-backplane 1 116 assembly
3.1 Bare PCB pcb-bare 1 part
3.2 SAS Expander IC rack-server-sas-expander 1 part
3.3 Hot-Swap Bay rack-server-drive-bay 12× 12 part
3.4 Drive Carrier 3 parts rack-server-drive-carrier 12× 12 3 assembly
3.4.1 Sheet Metal Panel sheet-panel 12 part
3.4.2 Carrier Latch rack-server-carrier-latch 12 part
3.4.3 Fastener Set fastener-set 12 part
3.5 Connector connector 6 part
3.6 SMD Passive (R/C/L) smd-passives 60× 60 part
4 Solid-State Drive 5 parts rack-server-ssd 4 41 assembly
4.1 Bare PCB pcb-bare 4 part
4.2 NAND Flash Package rack-server-nand 32 part
4.3 SSD Controller IC rack-server-ssd-controller 4 part
4.4 DRAM Cache rack-server-dram-cache 4 part
4.5 SMD Passive (R/C/L) smd-passives 30× 120 part
5 Hard Disk Drive 6 parts rack-server-hdd 8 70 assembly
5.1 Disk Platter rack-server-hdd-platter 40 part
5.2 Spindle Motor rack-server-hdd-spindle 8 part
5.3 Voice-Coil Actuator rack-server-hdd-actuator 8 part
5.4 Read/Write Head rack-server-hdd-head 10× 80 part
5.5 HDD Controller PCB 3 parts rack-server-hdd-pcb 8 52 assembly
5.5.1 Bare PCB pcb-bare 8 part
5.5.2 Microcontroller mcu 8 part
5.5.3 SMD Passive (R/C/L) smd-passives 50× 400 part
5.6 HDA Casting & Cover rack-server-hdd-casting 8 part
6 RAID / HBA Card 6 parts rack-server-raid-card 1 128 assembly
6.1 Bare PCB pcb-bare 1 part
6.2 RAID-on-Chip rack-server-roc 1 part
6.3 Cache DRAM rack-server-cache-dram 1 part
6.4 Cache Backup Unit rack-server-cache-backup 1 part
6.5 Connector connector 4 part
6.6 SMD Passive (R/C/L) smd-passives 120× 120 part
7 Power Supply power-supply 2 part
8 Cooling Fan Wall 4 parts rack-server-fan-wall 1 18 assembly
8.1 Blower Motor blower-motor 6 part
8.2 Fan Controller 3 parts rack-server-fan-controller 1 10 assembly
8.2.1 Bare PCB pcb-bare 1 part
8.2.2 Microcontroller mcu 1 part
8.2.3 Connector connector 8 part
8.3 Fan Cage rack-server-fan-bracket 1 part
8.4 Wire Bundle wire-bundle 1 part
9 PCIe Riser 4 parts rack-server-pcie-riser 2 24 assembly
9.1 Bare PCB pcb-bare 2 part
9.2 PCIe Slot rack-server-pcie-slot 4 part
9.3 Connector connector 2 part
9.4 SMD Passive (R/C/L) smd-passives 20× 40 part
10 Network Interface Card 5 parts rack-server-nic 2 95 assembly
10.1 Bare PCB pcb-bare 2 part
10.2 Ethernet Controller rack-server-nic-controller 2 part
10.3 SFP+ Cage rack-server-sfp-cage 4 part
10.4 Connector connector 2 part
10.5 SMD Passive (R/C/L) smd-passives 90× 180 part
11 Front Control Panel 6 parts rack-server-front-panel 1 37 assembly
11.1 Bare PCB pcb-bare 1 part
11.2 Power Button rack-server-power-button 1 part
11.3 Status LED rack-server-status-led 6 part
11.4 Connector connector 4 part
11.5 Wire Bundle wire-bundle 1 part
11.6 SMD Passive (R/C/L) smd-passives 24× 24 part
12 Internal Cable Kit 2 parts rack-server-cable-kit 1 13 assembly
12.1 Wire Bundle wire-bundle 1 part
12.2 Connector connector 12× 12 part

Sourcing — likely vendors

Companies that make this · indicative price $20–$3k · MOQ & lead are typical
VendorHQSpecialtyMOQLead time
dell.com ↗ Round Rock, US Computers & infrastructure 1,000 units 8–14 wks
🇺🇸HP
hp.com ↗
Palo Alto, US Computers & printers 1,000 units 8–14 wks
🇨🇳Lenovo
lenovo.com ↗
Beijing, CN Computers 1,000 units 8–14 wks
🇹🇼ASUS
asus.com ↗
Taipei, TW Computers & components 1,000 units 8–14 wks
🇨🇳Foxconn
foxconn.com ↗
Shenzhen, CN Electronics contract mfg 1,000 units 8–14 wks

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