Rack servers for businesses: high density, clean structure, reliable performance
A rack server bundles computing power in a space-saving manner in a server cabinet – ideal for standardized, scalable IT landscapes. Whether 1U for web workloads or 2U for virtualization: a well-designed rack system reduces effort, costs, and downtime.
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Lenovo SR550 - 1,8 GHz - 4108 - 16 GB - DDR4-SDRAM - 600 GB - Rack (2U)
Lenovo System x3650 M5 5462 - Server - Xeon E5 2,4 GHz - RAM:8 GB - DVD-Brenner - 2 HE
Lenovo .Server System x3550 M5 Xeon E5 v3 Six-Core 2.40 GHz Bus Speed 1866 MHz 15 MB Cache
Lenovo ThinkSystem SR250 - 3,6 GHz - E-2144G - 16 GB - DDR4-SDRAM - 450 W - Rack (1U)
ThinkSystem SR250, 1xIntel Xeon E-2224 4C 3.4GHz 71W, 1x8GB 1Rx8, SW RD, 1x450W, ThinkSystem SR250/SR150 Slide Rail Kit
ThinkSystem SR630, 1xIntel Xeon Silver 4215 8C 2.5GHz 85W, 1x16GB 2Rx8, RAID 930-8i 2GB Flash PCIe 12Gb Adapter, 1x750W, XCC Enterprise, ThinkSystem Toolless Slide Rail
Schooner Appliance for MySQL Enterprise - Xeon X5560 2.8 GHz - 64 GB - 1.712 TB
SN550 Gold 6230R (26C 2.1GHz 27.5MB Cache/150W), 32GB 2933MHz (1x32GB, 2Rx4 RDIMM), O/B, No Backplane, No LOM, Single M.2 Adapter (No Media), XCC Enterprise, TPM 2.0
ThinkSystem SR665, 2xAMD EPYC 7302 16C 155W 3.0GHz 155W, 2x32GB 2Rx8, SW RD, 1x1100W, XCC Enterprise,
Lenovo ThinkSystem SR630 - 3,4 GHz - 6128 - 16 GB - DDR4-SDRAM - 1100 W - Rack (1U)
SR650 Xeon Gold 6146 (12C 3.2GHz 24.75MB Cache/165W) 32GB(1x32GB, 2Rx4 RDIMM), O/B, 930-8i, 1x1100W, XCC Standard, Tooless Rails
SR590 Xeon Silver 4110 (8C 2.1GHz 11MB Cache/85W) 16GB (1x16GB, 2Rx8 RDIMM), O/B 3,5 inch (8), 530-8i, 1x750W, XCC Standard, Tooless Rails
HPE ProLiant DL20 Gen11 6325P 3.5GHz 4c 1P 1x32GB-U 4SFF 2x480GB SSD 1x1000W PS EU Server
Lenovo System x3550 M5 - 2,1 GHz - E5-2620V4 - 16 GB - DDR4-SDRAM - 550 W - Rack (1U)
ThinkSystem SR630, 1xIntel Xeon Silver 4210 10C 2.2GHz 85W, 1x16GB 2Rx8, RAID 930-8i 2GB Flash PCIe 12Gb Adapter, 1x750W, XCC Enterprise, ThinkSystem Toolless Slide Rail
What is a rack server and when is it worthwhile?
A rack server is a standardized enclosure (usually 19 inches) for mounting in a rack for servers. It allows high density, clear cabling, and efficient cooling – from edge locations to data centers.
Typical areas of application:
- Virtualization, databases, file services
- Private cloud and container workloads
- VDI/terminals, ERP/CRM, backup targets
Advantages at a glance
- Scalability: Easy expansion with additional height units (U)
- Service-friendly: Front access, rail systems, hot-swap components
- Standardization: Uniform 19-inch infrastructure, predictable spare parts
Which rack system is right for you? 19-inch, 10-inch, or mini rack
The 19-inch server rack is the corporate standard. It offers maximum manufacturer and accessory compatibility (PDU, KVM, cable management). In confined IT rooms, shops, or PoS environments, 10-inch server rack solutions are an option. For branch offices, a mini rack server with a short depth and low noise level is ideal.
Planning dimensions correctly
- Height units (U): 1U/2U determine density and expandability
- Depth: Take into account device and cable space (rails, connectors, bending radii)
- Cooling & airflow: Front-to-rear, blanking panels to prevent bypass airflow
Top manufacturers: Dell, HPE, and Lenovo
Performance, availability, and lifecycle services are key purchasing factors.
- Dell rack servers: PowerEdge series with broad CPU/RAM scaling, iDRAC management, and a strong ecosystem.
- Hewlett Packard rack servers: HPE ProLiant with iLO management, smart storage, and sophisticated security functionality.
- Lenovo server rack: ThinkSystem with high efficiency, versatile RAID options, and quiet acoustic profile.
Important selection criteria when purchasing a rack server
Requirements should be clearly defined before purchasing.
Performance & architecture
- CPU: Plan cores per license model and workload (VM density, DB threads)
- RAM: Reserve for cache, in-memory shares, and future upsizing steps
- Storage: NVMe/SAS mix for latency and capacity; consider RAID/erasure coding
Network & expansions
- Ports: 1/10/25/40/100 GbE according to traffic profile; Check SFP+/DAC compatibility
- IO slots: Allow space for HBAs, GPUs, or backup controllers
- Out-of-band: Remote management (iDRAC/iLO/XClarity) for 24/7 operation
Operation & Availability
- Redundancy: Dual PSU, hot-swap fans, multipath network; define spare parts logic
- Lifecycle: Firmware path, support contracts, spare parts availability
Rack servers: new, used, and refurbished at it-market
At it-market, you can find a variety of rack servers in tested quality – new, used, or refurbished.
We offer:
- 3-year warranty for companies
- Up to 2,500 euros buyer protection
- Short delivery times
Do you have any questions? Our sales team is happy to answer any questions you may have about IT hardware and IT remarketing.