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Rosewill THOR NAS - Full Tower Workstation Case | Server Chassis | Supports up to 11 3.5" HDD and 13 2.5" SSD | E-ATX Compatible | 1x 140mm PWM Fan | USB 3.2 Type-C | Ideal for AI Servers, DIY NAS
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Rosewill THOR NAS - Full Tower Workstation Case | Server Chassis | Supports up to 11 3.5" HDD and 13 2.5" SSD | E-ATX Compatible | 1x 140mm PWM Fan | USB 3.2 Type-C | Ideal for AI Servers, DIY NAS

+ $20 off w/ promo code MFSF994, limited offer

  • Motherboard Compatibility: 12" x 13" E-ATX; 12" x 9.6" ATX, 11.2" x 8.2" Mini-ATX and below
  • Power Supply: Supports ATX power supply
  • Internal 3.5" Drive Bays: 11
  • Expansion Slots: 10
  • Model #: THOR NAS
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PSU for Small 1U 200W Switching Power Supply DPS-200PB-209A DPS-200PB-209 A 872721-101 874739-001
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PSU for Flex NAS HTPC Small 1U 250W Switching Power Supply DPS-250AB-24B
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for R4850G2 Communication Switching Power Supply 48V50A 3000w
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PSU for FSP E200 CP5141 Small 1U 250W Power Supply PS8-250FATX-XE FSP250-50GUB EFAP-M251
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New Sealed 1746-P2 SER C Chassis Power Supply PLC 1746-P2 US Stock
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UHP-200R-12 12V 16.7A 200.4W Slim Type with PFC Switching Power Supply, JSHCN123456
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FRM220-AC(90-240V) Power Supply Unit for FRM220-CH20 Chassis
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Server Chassis Guide: Build Your Ideal IT Infrastructure

The server chassis is the backbone of your server setup, housing critical components and ensuring optimal performance. Choose the right chassis to optimize space, airflow, and expandability. Let's explore your options:

Server Chassis by Form Factor

  • Tower Chassis: Versatile and expandable, perfect for growing businesses requiring flexibility and increased storage capacity.
    • Sizes: Full Tower (maximum space), Mid Tower (balanced), Mini Tower (space-saving)
  • Rackmount Chassis: Designed for high-density data centers and server rooms, maximizing space utilization and simplifying cable management.
    • Sizes: Measured in rack units (U), typically 1U, 2U, or 4U
  • Blade Chassis: Ultra-compact and modular, ideal for large-scale deployments where high compute density and shared infrastructure are priorities.

Server Chassis by Brand: Top Manufacturers

  • Rosewill: Budget-friendly, reliable chassis with a focus on rackmount solutions for small to medium businesses.
  • Supermicro: High-performance, enterprise-grade chassis known for their build quality, advanced features, and customization options.
  • Chenbro: Durable and versatile chassis offering a range of form factors and configurations for various IT environments.
  • iStarUSA Group: Specializes in storage-dense chassis with hot-swappable bays and robust cooling solutions.

Server Chassis Buying Guide: Key Technical Considerations

  1. Form Factor: Choose based on your deployment environment, space constraints, and future growth plans.
  2. Size (U) (for rackmounts): Select the appropriate height to fit your rack and server configuration.
  3. Expandability: Consider available drive bays, PCIe slots, and memory capacity for future upgrades.
  4. Cooling: Ensure adequate airflow and fan options to maintain optimal operating temperatures for your components.
  5. Power Supply: Choose a power supply with sufficient wattage and redundancy options to meet your server's demands.
  6. Features: Look for features like hot-swappable drives, redundant power supplies, tool-less access, and cable management options to simplify maintenance and improve reliability.
  7. Brand Reputation: Opt for reputable manufacturers known for quality, reliability, and support to minimize downtime and ensure long-term performance.

Pro Tips for IT Professionals:

  • Thoroughly assess your specific workload and hardware requirements before selecting a chassis.
  • Pay close attention to compatibility with your motherboard, expansion cards, and other components.
  • Factor in future scalability needs when choosing a chassis to avoid costly upgrades down the line.
  • Consult with IT experts or refer to detailed product specifications to make an informed decision.

Bestselling Server Chassis Reviews:

Anonymous
2/18/2026 3:21:35 PM
Great budget 2U chassis

β€œ Really great 2U chassis for the price. ”

Rosewill 2U Server Chassis Rackmount Case | 4 3.5" HDD Bays | Micro-ATX Compatible |3 x 80mm PWM Fans | 2x USB 3.0 | Silver/Black - RSV-Z2600U
Anonymous
10/17/2025 7:22:05 AM
Sturdy Case

β€œ Supermicro makes great and sturdy cases. ”

Supermicro Case CSE-731I-404B Mini-tower chassis 2x5.25" External HDD Drive Bays and 4x 3.5" Internal HDD Drive Bays 400W
George B.
9/11/2025 7:31:14 AM
Amazing 2U case.

β€œ I usually build in 4U cases, but this was a very well designed 2U case making the build process very easy. ”

Rosewill 2U Server Chassis Rackmount Case | 4 3.5"/2.5" HDD, 1 5.25" Device | Micro-ATX Compatible | 2 x 80mm PWM Fans | 2x USB 3.0 | Silver/Black - RSV-Z2700U
Adrian H.
7/31/2025 8:06:49 PM
Supports big radiators. Pretty good, but a few niggles

β€œ One day the issue with it not aligning properly to 4U might be a problem, but for now...I have space. ”

Rosewill 4U Server Chassis Rackmount Case | 15 3.5" HDD Bays | E-ATX Compatible | 6 Front 120mm Fans, 2 Rear 80mm Fans | 2x USB 3.0 | Front Panel Lock and Key | Silver/Black - RSV-L4500U
tim1724
5/20/2025 7:23:19 PM
Well built, flexible for wide array of applications

β€œ My main reason for choosing it was that I needed a cheap GPU server using consumer grade cards (Geforce RTX 3090) which don't fit in a typical server chassis. ”

SUPERMICRO SuperChassis CSE-745BAC-R1K23B 4U Tower Server Chassis
Michael M.
4/11/2025 4:03:16 AM
Good case, especially when on sale - RSV-L4000U

β€œ There's not a lot of info from Rosewill about this case and what you can fit in it. ”

Rosewill 4U Server Chassis Rackmount Case | 8 3.5" HDD Bays, 3 5.25" Devices | E-ATX Compatible | 5 Front 120mm Fans, 2 Rear 80mm Fans | 2x USB 3.0 | Front Panel Lock | Silver/Black - RSV-L4000U
Anonymous
4/6/2025 12:51:34 PM
Great chasis for ATX rack mounted server/pc

β€œ A large PC style ATX PSU will likely extend over the CPU socket (I was using a 1600w seasonic); meaning you will have to use an AIO/water cooling setup for the CPU, or at a minimum a 2u height cooler (this is on an ATX MB). ”

Rosewill 4U Server Chassis|Supports up to 4 GPUs|8 Hot-Swap 3.5"/2.5" SATA/SAS up to 12Gbps|E-ATX Compatible|3x 12038 Hot-Swap Fans, 2 Rear 8038 Fans|USB 3.2 Type-C|With Rail Kit|Ideal for AI Servers
Paul H.
10/16/2024 5:45:39 AM
Not bad but a lot of gotchas

β€œ Compact for a rack mount case ”

iStarUSA D-314-MATX Black 3U Rackmount Chassis ATX Power Supply Compatible