---
product_id: 413622880
title: "Technology RM43-320-RS 4U 20-Bay 2.5\" / 3.5\" HDD/SSD rackmount Storage Server Chassis with Mini-SAS HD SFF-8643 12 Gb/s Interface, SST-RM43-320-RS"
brand: "silverstone"
price: "€ 2085.59"
currency: EUR
in_stock: true
reviews_count: 8
category: "Silver Stone"
url: https://www.desertcart.nl/products/413622880-technology-rm43-320-rs-4u-20-bay-2-5-3
store_origin: NL
region: Netherlands
---

# 12 Gb/s Mini-SAS HD SFF-8643 interface 20-bay SAS/SATA hot-swap storage 3x 120mm PWM ball bearing fans Technology RM43-320-RS 4U 20-Bay 2.5" / 3.5" HDD/SSD rackmount Storage Server Chassis with Mini-SAS HD SFF-8643 12 Gb/s Interface, SST-RM43-320-RS

**Brand:** silverstone
**Price:** € 2085.59
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your storage game with pro-grade speed, silence, and scalability!

## Quick Answers

- **What is this?** Technology RM43-320-RS 4U 20-Bay 2.5" / 3.5" HDD/SSD rackmount Storage Server Chassis with Mini-SAS HD SFF-8643 12 Gb/s Interface, SST-RM43-320-RS by silverstone
- **How much does it cost?** € 2085.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/413622880-technology-rm43-320-rs-4u-20-bay-2-5-3)

## Best For

- silverstone enthusiasts

## Why This Product

- Trusted silverstone brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Rack Integration:** Tool-less ball bearing sliding rails and auto-lock handles make installation and maintenance a breeze—no downtime, just uptime.
- • **Whisper-Quiet Cooling System:** Maintain peak performance with three hot-swappable PWM ball bearing fans that balance airflow and silence, even under heavy load.
- • **Massive 20-Bay Storage Capacity:** Scale your data center or home lab with seamless hot-swap trays supporting both 2.5" and 3.5" SAS/SATA drives.
- • **Blazing Fast 12 Gb/s SAS Interface:** Experience ultra-responsive data transfer speeds with Mini-SAS HD SFF-8643 connectivity, engineered for professional workloads.
- • **Flexible Power & Motherboard Support:** Accommodates E-ATX/SSI-EEB motherboards and ATX/Mini redundant PSUs, future-proofing your build with versatile hardware compatibility.

## Overview

The SilverStone RM43-320-RS is a robust 4U rackmount chassis designed for high-performance storage servers. It supports up to 20 hot-swappable 2.5" or 3.5" SAS/SATA drives via a 12 Gb/s Mini-SAS HD SFF-8643 interface, ensuring rapid data throughput. Equipped with three PWM-controlled 120mm ball bearing fans, it delivers efficient cooling with minimal noise. The chassis features tool-less sliding rails and auto-lock handles for quick rack integration, and supports large motherboards (up to E-ATX/SSI-EEB) and flexible power supply configurations, making it ideal for professional data centers and advanced home labs.

## Description

SilverStone’s RM43-320-RS is a high performance storage server chassis designed for the professional storage environment. It is well-equipped with hard drive trays compatible with 3.5" drives, motherboard support of up to E-ATX / SSI-EEB form factor, flexible mounts to accommodate ATX (PS2) / Mini Redundant power supplies and fan assembly with 3 x 120mm PWM ball bearing fans. RM43-320-RS has also included a tool-less ball bearing sliding rail kit for a simple server rack integration and auto-lock handles to convenient fixate the chassis once integrated. With an overall package designed for maximizing efficiency, flexibility, and durability, the RM43-320-RS is a great choice for professionals or data center engineers looking to build a storage server.

Review: Great case for my home lab Siwss Army knife cloud server including a RTX-5090 GPU. - Great upgrade 4U case for my home lab cloud server. I needed more room to add a RTX-5090 to this rig, and didn't want to go all the way to a 5U case. To be clear, there is only one 5090 card brand (Zotac) that will fit this 4U case with enough room on top to comfortably fit the 600W connector & wiring. If using another brand, I would probably go with a 5u case. I installed the Zotac Solid OC specifically in this build. Other Zotac models will likely fit as well. The SOLIDs 137mm height is a perfect fit for this case (which specifies a154mm max height). The case came with a number of front GPU support brackets. I used one, and it makes for a very solid mount. The 5090s aluminum frame holes at the front of the card lined up perfectly with the holes in the provided bracket. With the card secured with three screws in the back, and the case bracket in the front, I am confident the card will not come loose when removing/installing this case in my rack. As far as cooling, the case will fit one Noctua NF-A14x25r G2 PWM (140mm) and two NF-A12x25 PWM (120mm) in the front panel. It is tight, but can be done. Use the adjustable slots instead of fixed holes to slide the two 120mm fans far to the left and right sides of the case to leave room for the 140mm in the middle. I loaded this case up with a total of 8 fans (added a custom slot bracket with (2) 40mm fans for a total of 7 case fans and a Noctua NH-D12L CPU cooler w/fan). This configuration provides fantastic airflow and dropped the CPU temp by a solid 20C over the previous 2U case which was cooling challenged even with a Ghost S1 CPU cooler and (4) 80mm case fans.. Overall well made case. Even with a 10G NIC card and the RTX 5090 installed, there is still room to access at least 2 of the SATA 2.5" mounting plates comfortably (no wires/cards in the way). I now plan on adding a couple of large SATA drives in raid mirror as a home network file server and for backups, making this machine even more of a Swiss army knife of a server. This combination of fans is almost completely silent, even with a moderate load. With the fans at 100% it is only noticeable if you are in the same room, but I doubt you would hear it in the next room. Overall very happy with this case. One negative ,but not enough to remove a star, the manufacturer does not sell a set of sliding rails that fits this case in short racks (slightly less than 22" deep). This case uses screwless rail studs to connect the rails, and there is no option for screw on rails. The only rails designed for this case are too long for my rack. I ended up using the Cyber Power 4POSTRAIL, which worked, but is VERY tight when sliding in the heavy duty rack ears on this case. Installer trick, don't lock down the rail mounting screws (just hand snug them). After you slide the case in fully (might take some wiggling), lock the back screws and the bottom two screws in front. This will lock the rails in place with perfect spacing/alignment, then you can pull the case out and lock down the top two front screws.
Review: Plenty of room for activities! - This is a great rack mounted case. You can run single or redundant power supplies, It fit my ATX motherboard and RTX card with plenty of room to spare. I have a 360mm AIO cooling system for my CPU and this case handles it with ease. Airflow is consistent and has a well defined path - front to back. Noise levels vary on system load and environmental temps. Plenty of USB ports in front, though I would have liked to see 2 CD/DVD drive bays. Mounts EASILY into a standard rack. Needs 4 screws. Can be mounted to rails to slide out if you want to go that far, however the rails are not included with the case and must be purchased on their own. If you wanted to put the case on it's side and not mount it in a rack, you can do that also. I can see myself re-using this chassis for multiple system builds.

## Features

- Backplane support for 20 port SAS / SATA drives and 12 Gb/s Mini-SAS HD SFF-8643 + SGPIO
- Supports twenty 2.5"/3.5" SAS/SATA HDD/SSD hot-swap trays
- Ball bearing sliding rails included for simple server rack integration
- Includes three 120mm x 38mm hot-swappable PWM fans
- Auto lock handle for convenient fixation of chassis into rack cabinet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09T93LDJ6 |
| Best Sellers Rank | #90 in Computer Cases |
| Brand | SilverStone |
| Color | Silver |
| Customer Reviews | 4.5 4.5 out of 5 stars (347) |
| Date First Available | February 24, 2022 |
| Hard Drive | Mechanical Hard Drive |
| Item Dimensions LxWxH | 25.98 x 17.4 x 6.89 inches |
| Item Weight | 35.6 pounds |
| Item model number | RM43-320-RS |
| Manufacturer | SilverStone Technology |
| Number of USB 3.0 Ports | 1 |
| Product Dimensions | 25.98 x 17.4 x 6.89 inches |
| Series | SST-RM43-320-RS |

## Product Details

- **Brand:** SilverStone
- **Case Type:** Integrated
- **Color:** Silver
- **Cooling Method:** Air
- **Item Weight:** 16.2 Kilograms
- **Material:** Metal
- **Model Name:** SST-RM43-320-RS
- **Motherboard Compatability:** Extended ATX, ATX, Micro ATX, Mini ITX
- **Power Supply Mounting Type:** Rear Mount
- **Recommended Uses For Product:** Business

## Images

![Technology RM43-320-RS 4U 20-Bay 2.5" / 3.5" HDD/SSD rackmount Storage Server Chassis with Mini-SAS HD SFF-8643 12 Gb/s Interface, SST-RM43-320-RS - Image 1](https://m.media-amazon.com/images/I/61QQr+QrAgL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: What does "*limited to use standalone peripheral (molex) 4pin cable to connect to each peripheral (molex) 4pin port from psu" mean (documentation)?**
A: It means you should connect each peripheral (molex) connector with one single cable from the power supply. So you should have two separate cables from the power supply connecting to the two peripheral (molex) connectors on RM43-320-RS's backplane directly. Do not connect both connectors on the backplane with just one cable!

**Q: Do you need to plug in both 4pin molex connectors per backplane?**
A: Yes you do.

**Q: What CPU cooler are you using for this? Does the NH-D12 fit?**
A: The RM43-320-RS can fit CPU cooler up to 148mm in height. According to Noctua's product page, the NH-D12L is 145mm tall so yes, it will fit in the case.

**Q: I see the that the chassis supports up to 148mm clearance for cpu cooler, can a 151mm cooler be made to fit in here?**
A: Probably not, we set the 148mm limit because that's all the room available for it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great case for my home lab Siwss Army knife cloud server including a RTX-5090 GPU.
*by D***G on June 5, 2025*

Great upgrade 4U case for my home lab cloud server. I needed more room to add a RTX-5090 to this rig, and didn't want to go all the way to a 5U case. To be clear, there is only one 5090 card brand (Zotac) that will fit this 4U case with enough room on top to comfortably fit the 600W connector & wiring. If using another brand, I would probably go with a 5u case. I installed the Zotac Solid OC specifically in this build. Other Zotac models will likely fit as well. The SOLIDs 137mm height is a perfect fit for this case (which specifies a154mm max height). The case came with a number of front GPU support brackets. I used one, and it makes for a very solid mount. The 5090s aluminum frame holes at the front of the card lined up perfectly with the holes in the provided bracket. With the card secured with three screws in the back, and the case bracket in the front, I am confident the card will not come loose when removing/installing this case in my rack. As far as cooling, the case will fit one Noctua NF-A14x25r G2 PWM (140mm) and two NF-A12x25 PWM (120mm) in the front panel. It is tight, but can be done. Use the adjustable slots instead of fixed holes to slide the two 120mm fans far to the left and right sides of the case to leave room for the 140mm in the middle. I loaded this case up with a total of 8 fans (added a custom slot bracket with (2) 40mm fans for a total of 7 case fans and a Noctua NH-D12L CPU cooler w/fan). This configuration provides fantastic airflow and dropped the CPU temp by a solid 20C over the previous 2U case which was cooling challenged even with a Ghost S1 CPU cooler and (4) 80mm case fans.. Overall well made case. Even with a 10G NIC card and the RTX 5090 installed, there is still room to access at least 2 of the SATA 2.5" mounting plates comfortably (no wires/cards in the way). I now plan on adding a couple of large SATA drives in raid mirror as a home network file server and for backups, making this machine even more of a Swiss army knife of a server. This combination of fans is almost completely silent, even with a moderate load. With the fans at 100% it is only noticeable if you are in the same room, but I doubt you would hear it in the next room. Overall very happy with this case. One negative ,but not enough to remove a star, the manufacturer does not sell a set of sliding rails that fits this case in short racks (slightly less than 22" deep). This case uses screwless rail studs to connect the rails, and there is no option for screw on rails. The only rails designed for this case are too long for my rack. I ended up using the Cyber Power 4POSTRAIL, which worked, but is VERY tight when sliding in the heavy duty rack ears on this case. Installer trick, don't lock down the rail mounting screws (just hand snug them). After you slide the case in fully (might take some wiggling), lock the back screws and the bottom two screws in front. This will lock the rails in place with perfect spacing/alignment, then you can pull the case out and lock down the top two front screws.

### ⭐⭐⭐⭐⭐ Plenty of room for activities!
*by T***. on September 28, 2025*

This is a great rack mounted case. You can run single or redundant power supplies, It fit my ATX motherboard and RTX card with plenty of room to spare. I have a 360mm AIO cooling system for my CPU and this case handles it with ease. Airflow is consistent and has a well defined path - front to back. Noise levels vary on system load and environmental temps. Plenty of USB ports in front, though I would have liked to see 2 CD/DVD drive bays. Mounts EASILY into a standard rack. Needs 4 screws. Can be mounted to rails to slide out if you want to go that far, however the rails are not included with the case and must be purchased on their own. If you wanted to put the case on it's side and not mount it in a rack, you can do that also. I can see myself re-using this chassis for multiple system builds.

### ⭐⭐⭐⭐ Great case for gaming/editing machine to use in rack. Lots of room. Easy fit with AIO water cooling.
*by S***A on September 10, 2022*

I've had this in use for a few months now. If you don't have an extreme setup or anything, this will do nicely. My older editing rig that I wanted to test this case out with is listed below. I wasn't sure how this was going to work -- would the airflow be good? Would everything fit? How noisy would a 'basic' server case be (clanking, rattling, etc)? So far, I'm very pleasantly surprised at how simple this change over was. Reading the comments, it made it seem like it would be more trial and error, which I didn't experience anything other than a straight forward drop in. With the rack in my closet, I never realized how quiet my computer room could have been many years prior to this. Wish I did this a long time ago. Way more expensive than going a simple desktop case but well worth it. When editing or gaming in this case, my temps are not any worse than with my high flow desktop cube case I had (Corsair 540). I typically stay ~55-58c during video rendering and during gaming the gpu is ~60c with a mild fan curve. Even in the closet, the stock fan curve was louder than I wanted but kept temps down in the low 50's. So I figured the trade-off of >10c for much quieter sound was worth it. So if you're worried about this case not having all the fans you've become accustomed to with gaming cases, don't fret. A good AIO cooler (the Arctic II is excellent and fits great in this case!) and two Noctua 80mm fans on the rear keep the flow decent with minimal sound. Components i7 6850k (oc'd to 4ghz) x99 Titanium ATX mobo R9 Fury 4 x SSD's Arctic II 240 Cooler I ended up not using the gpu bracket or hdd cage. I just stuffed my 4 ssd's in the area for 5.25 devices since I'll never use that for anything. Cable management is easy but not as much of a requirement for something that will be tucked away. Sure, you still want it clean and easy to work on as well as keeping the restriction of airflow down, with that in mind, it's nothing to get the cables out of the way. The case is solid and sturdy. When put in the rack with the lid, no rattles from the case whatsoever. With the front lockable door open or closed, it made no difference in my temps, so I just keep it closed. Love the usb-c port on the front! Mild cons: It's pricey. Can't find good quality sliding rails to work with it. Will be moving my other 2 computers into these cases over time.

## Frequently Bought Together

- SilverStone Technology RM43-320-RS 4U 20-Bay 2.5" / 3.5" HDD/SSD rackmount Storage Server Chassis with Mini-SAS HD SFF-8643 12 Gb/s Interface, SST-RM43-320-RS
- LSI 9300-16i 16-Port 12Gb/s SAS Controller HBA Card with P16 IT Mode for ZFS TrueNAS unRAID
- OIKWAN Internal Mini SAS to Mini SAS Cable, SFF-8643 to SFF-8643, Compatible with RAID or PCI Express Controller (1.6FT/0.5M)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-03*