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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.

More about rack servers

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IBM 7147CTO

X3690X5 Base Server Configure to Order

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IBM 794552U

IBM SYSTEM X3650 M3 2.40G 12

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HPE P52535-B21

HPE ProLiant DL380 Gen11 24xSFF Configure-to-order Server

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HPE R9N71A

HPE Compute Scale-up Server 3200 Data Solutions 4-socket XNC Base Chassis

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Ubiquiti UXG-PRO

Ubiquiti Networks Gateway Pro, 1U, aluminum, rackmount, LAN, performance, 1700 MHz, 2048 MB, 2-port Ethernet RJ-45 rack module 1 U

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Cisco UCSC-C240-M3S-CH

Disti:C240M3SFF,w/oCPU,Mem,HD,PCIe,PSU,w/Rls,HSnk,Blnk,Expdr

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IBM 72337RU

IBM SYSTEM X3850 M2 2X2.13G

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Lenovo 7X08A00JEA

SR530 Xeon Gold 5120 (14C 2.2GHz 19.25MB Cache/105W) 16GB(1x16GB, 1Rx4 RDIMM), O/B, 930-8i, 1x750W, XCC Standard, Tooless Rails

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IBM 79795AU

Lenovo System x3650 7979 - Server - Xeon DP 2,33 GHz - RAM:1 GB HDD:1 GB SAS SAS1, SCSI - CDRW/DVD Combo - 2 HE

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Lenovo 7X04A024EA

Lenovo SR550 - 2,1 GHz - 6130 - 32 GB - DDR4-SDRAM - 750 W - Rack (2U)

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Lenovo 72335RG

Lenovo System x3850 M2 7233 - Server - Xeon E7 2,4 GHz - RAM:8 GB HDD:8 GB SAS SAS1 - CDRW/DVD Combo - 4 HE

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Lenovo 3633EGG

Lenovo System x3250 M6 3633 - Server - rack mount

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Lenovo 7X02A06PEA

Lenovo ThinkSystem SR630 - 2,60 GHz - 6132 - 16 GB - DDR4-SDRAM - 1100 W - Rack (1U)

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HPE P78861-B21

HPE Alletra Storage Server 4210 EDSFF Configure-to-order System

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HPE P63253-B21

HPE Alletra Storage Server 4140 92LFF Configure-to-order System

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Lenovo 7945M2G

Lenovo SYSTEM x3650M3 6C XE 2.93GHz X5670 - Server - Xeon DP

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APC AR4024X432

NetShelter CX 24U 750 mm Wide x 1130 mm Deep Enclosure White Finish

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HPE P71452-B21

HPE ProLiant Compute DL340 Gen12 SFF Configure-to-order Server

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HPE P53921-B21

HPE ProLiant DL385 Gen11 8SFF Configure-to-order Server

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APC AR4018X431

NetShelter CX 18U 750 mm Wide x 1130 mm Deep Enclosure Dark Grey Finish

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Avaya S8300E

Avaya S8300E - Voice/video/data server - plug-in module

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Cisco UCSC-C220-M3L-CH2

Disti:C220M3LFF,w/oCPU,HSnk,Mem,HD,PCIe,PSU,w/Rls,Blnk

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HPE P83118-425

HPE ProLiant DL360 Gen11 4509Y 2.6GHz 8c 1P 2x32GB-R 8SFF MR408i-o 2x480GB SSD 2x1000W PS EU Server

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Lenovo 7X02A0B6EA

ThinkSystem SR630, 1xIntel Xeon Gold 5222 4C 3.8GHz 105W, 1x16GB 2Rx8, RAID 930-8i 2GB Flash PCIe 12Gb Adapter, 1x750W, XCC Enterprise, ThinkSystem Toolless Slide Rail

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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.