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Description
Cisco DC SN840 3.20 TB Solid State Drive - 2.5" Internal - U.2 (SFF-8639) NVMeMeet the Cisco DC SN840 3. 20 TB NVMe solid state drive, a purpose built storage device crafted for data centers, enterprise servers, and high demand workloads. This 2. 5 inch internal drive uses the U. 2 (SFF 8639) interface and NVMe protocol to deliver accelerated data access, low latency, and consistent performance under heavy I O. Engineered for reliability and uptime, the SN840 is designed to fit seamlessly into Cisco server ecosystems and
Meet the Cisco DC SN840 3.20 TB NVMe solid state drive, a purpose-built storage device crafted for data centers, enterprise servers, and high-demand workloads. This 2.5-inch internal drive uses the U.2 (SFF-8639) interface and NVMe protocol to deliver accelerated data access, low latency, and consistent performance under heavy I/O. Engineered for reliability and uptime, the SN840 is designed to fit seamlessly into Cisco server ecosystems and compatible enterprise environments, providing a robust foundation for databases, virtualization, analytics, and large-scale file storage. With its hot-pluggable capability, administrators can swap drives without interrupting critical services, helping to maximize productivity and minimize downtime in busy data centers.
- High-capacity NVMe storage for dense data — The SN840 brings a sizable 3.2 TB of flash to the rack, enabling data-intensive workloads to store more information on a single drive. This capacity is ideal for dense databases, large-scale backups, virtual machines, media libraries, and archival storage, reducing the need for frequent add-ons while streamlining data management and provisioning.
- 2.5-inch U.2 form factor for flexible deployment — The drive is built in a standard 2.5" enclosure with a U.2 (SFF-8639) connector, allowing straightforward integration into Cisco servers and many enterprise storage backplanes. Its compact footprint supports dense server configurations and simplifies hardware compatibility across multiple data-center platforms.
- NVMe performance optimized for data centers — By leveraging the NVMe protocol over PCIe, the SN840 minimizes protocol overhead and boosts input/output operations per second (IOPS) and throughput. This results in quicker data access, faster application response times, and improved performance for mixed workloads such as online transactions, analytics streaming, and virtualized environments.
- Hot-pluggable reliability for uptime — Designed for hot-swapping, the SN840 enables maintenance and drive replacement without complete server downtime in supported configurations. This capability is vital for meeting service-level objectives, keeping critical services online, and sustaining business operations even during routine maintenance or drive failure scenarios.
- Enterprise-grade endurance and compatibility — Built to endure sustained enterprise workloads, the SN840 is tested for compatibility with data-center servers and storage ecosystems. It supports long-term reliability, steady performance under load, and predictable behavior essential for mission-critical applications and storage pools.
Technical Details of Cisco DC SN840
- Capacity: 3.20 TB
- Form Factor: 2.5" internal drive
- Interface: NVMe, U.2 (SFF-8639)
- Protocol: NVMe over PCIe
- Connectivity: SFF-8639/U.2 backplane compatibility for enterprise servers
- Drive Type: Solid State Drive (SSD)
- Hot-Plug Support: Yes
- Designed For: Enterprise data centers, Cisco servers, and compatible storage environments
How to install Cisco DC SN840
Installing the Cisco DC SN840 is a straightforward process when performed with standard server maintenance procedures. Below is a practical guide to help you deploy this NVMe drive in compatible Cisco servers or enterprise storage systems, ensuring proper detection, configuration, and optimal performance.
- Power down the server and disconnect all power sources before handling components to prevent static discharge or hardware damage.
- Identify the correct drive bay or backplane slot within your chassis that supports 2.5" U.2 NVMe drives (SFF-8639) and verify the backplane compatibility.
- Remove any existing drive tray or sled if required by your chassis’ design, then align the SN840 with the slot. Ensure the connector faces the backplane for a smooth mate.
- Carefully insert the drive into the bay until it seats firmly. Secure the drive with the tool-less mechanism or mounting screws supplied with the chassis to prevent movement during operation.
- Connect the U.2 interface to the server’s backplane or NVMe controller using the appropriate data cable or backplane connection. Confirm a solid, locked connection is established.
- Power on the system and access the server management interface or BIOS/UEFI to verify that the SN840 is detected by the firmware and recognized as a storage device.
- Enter the operating system’s disk management utility or your storage controller’s management software to initialize the drive. Partition the drive as needed according to your storage strategy (MBR/GPT, alignment, and stripe size considerations).
- Format the drive with the desired file system and configure any performance policies or storage tiering rules if using a storage controller with tiered storage capabilities.
- If a firmware update is available, apply it through the Cisco or motherboard/ controller vendor’s recommended process to maximize reliability and compatibility with your firmware stack.
- In multi-drive configurations or RAID setups, add the SN840 to the appropriate array, configure redundancy (RAID level), and verify data synchronization and health status across the pool.
- Test the drive with representative workloads to confirm read/write throughput, latency, and error-free operation before deploying in production environments.
Frequently asked questions
- Q: What is the primary use case for the Cisco DC SN840? A: The SN840 is designed for enterprise data centers to support databases, virtualization, large-scale file storage, backups, analytics, and other high-demand workloads that require high capacity, fast NVMe performance, and reliable uptime.
- Q: What interface and form factor does the SN840 use? A: It uses a 2.5-inch internal form factor with a U.2 (SFF-8639) connector and NVMe protocol, enabling efficient integration into compatible Cisco servers and backplanes.
- Q: Is the SN840 hot-pluggable? A: Yes, the SN840 supports hot-plug operations, allowing drive replacement or maintenance without shutting down the entire server in supported configurations.
- Q: Which workloads benefit most from this drive? A: Workloads requiring high write/read throughput and low latency, such as transactional databases, virtualization hosts, large-scale analytics, content repositories, and media storage, are well-suited for the SN840.
- Q: How does the SN840 fit into a storage array or server ecosystem? A: The SN840 is built for enterprise environments and is compatible with Cisco data center servers and many standard storage ecosystems, enabling seamless integration into RAID arrays, storage pools, and backplanes that support U.2 NVMe drives.
- Q: Are there any maintenance tips to maximize durability? A: Regular firmware updates, clean power delivery, proper thermal management, and proactive monitoring of drive health through the server management interface help maximize endurance and reliability of NVMe SSDs like the SN840.
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4.6 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Robust pipe & fittings with a beautiful, smooth black finish
Size: side table leg
This set of pipe & fittings for use as low table legs is heavy duty and aesthetically pleasing. Especially when the pieces are handled, the tactile sensation is much nicer than with plumbing steel pipe because this product is beautifully finished smooth. The black pipes are quite smooth as well as the fittings.
The pieces are all also pretty robust, though the wall thicknesses are less than in pipe for pressurized water systems. Of course that makes sense as this product does not need to hold fluid pressure.
In my view they got the heaviness factor of this product just right; it's not as heavy or robust as black pipe used in natural gas supplies, but still robust and pretty heavy. Assembled, this product is absolutely stiff and unyielding for a solid table that could hold a man's weight easily.
The feet utilize a brilliant scheme so that each foot can be independently adjusted for an uneven floor. Thus a level table on an uneven floor is easily accomplished. The feet simply extend the effective leg length by screwing counter-clockwise. To prevent any shifting at the threads adding some pipe compound or teflon tape may be advised. Even masking or duct tape might work as the idea is to just fill any gaps where male threads meet female threads.
The four flanges at the tops of the legs provide a wide, solid surface for attaching the table top, with either hidden screws underneath or you could through-bolt a glass table top (provided you have the skill to drill glass!). I think this product would look great with a glass top.
Assembly is quick and easy. The hardest part is drilling holes underneath the table top to accept screws. No pipe wrenches are needed as the pieces screw together by hand to an adequate tightness. If any doubt whether they are tightened enough have a strong person with grippy gloves finish. The "X" in the center attaches to the legs with a very clever machine screw system tightened with the included hex wrench. This is presumably because if tightened simply by screwing the fittings, the point of snugness would not likely be where the "T" fittings are exactly vertical. The maker has solved this problem so that you are assured that all legs will be in the perfect vertical position once everything is tight. The setup is also nice and rigid once tightened. This is a huge benefit of steel pipe projects; they are really solid.
The black finish is clearly very durable, like a powder coat. It appears that it will provide excellent protection against rust. Coverage is complete; I found no dings or scratches anywhere on any piece.
Overall this is a very well-designed product for function and aesthetics. Perfect for a beautifully renovated warehouse condo where an industrial vibe is desired in a rock-solid table that won't shift around. The smoothness of the pipe is top notch. I've used lots of pipe in projects, some of it actual water pipe and some decorative pipe such as this. I've never seen better quality decorative pipe as this maker put in the effort to finish it beautifully smooth. At currently $34.99 I find the price quite reasonable too.
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Reviewed in the United States on April 18, 2026
★★★★★ 3
the height is only 16"
Size: coffee table leg
The height is only 16". From the description it appears to be 24" wide and 24" high.
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Reviewed in the United States on April 2, 2026
★★★★★ 4
Good DIY Pipe Legs but Powder Coat Quality Lacks
Size: side table leg, Size: side table leg
These industrial style pipe legs make building a DIY end table easy and the kit saves a trip to the hardware store. The fittings go together normally and assembly is simple. Comes individually wrapped. My main issue is the powder coating looks and feels cheap and rubs off easily. The pipes already had marks from touching each other from unboxing. If you do not mind some wear on the finish over time this is a decent purchase. The metal at the hardware store will be thicker and more durable but will cost more. I’d recommend based on ease of having a kit and it being delivered saving me a trip.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Stable, attractive, and easy to turn into a table with your choice of top
Size: side table leg
The X-shape of the table legs - constructed with solid metal flanges, T-joints, X-joints and 1-inch diameter pipes - provides a strong and sturdy base for a wood top. The legs have adjustable feet pads to prevent scratches and ensure stability. Assembly of the legs is relatively simple (the instructions are clear) but you will need your own tools to attach a top.
The industrial design is especially well suited to rec room or finished basement use. I am adding a 28" diameter raw edge slab of wood from a recently felled tree as the top and it is very attractive. (Photo unavailable because after I made certain it would work I sent the slab out for drying and finishing.)
If you want a custom table and have a particular piece of wood you want to use, these legs are an excellent choice.
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Very nice kit: Beware it is NOT heavy duty plumbing pipe though!
Size: side table leg
I want to give this kit a high rating, but I need to address the "truth in advertising" bit since there may be an important disconnect between what you think you are getting and what actually comes in the box.
Black plumbing used for shelving or table legs is part of an important niche in interior design. I like the industrial loft look myself and have a variety of glass, steel, and masonry elements in my home. This kit fits that look and provides plenty of "strength" for most domestic uses, like shelves or coffee tables. But they are NOT "industrial pipe" or "maximum durability pipe." Note the phrase "cast iron finish feet," which together with the other claims might lead you to think these are cast plumbing fittings. They are NOT!
The feet and flanges feel like electrical conduit fittings, and the pipe sections are likely aluminum. They might be electrical or they might be multi-use, lightweight pipe.
While all this might lead you to think that you're getting a truly retro, heavy-duty pipe kit made of black plumbing pipe, you are not. But, does it matter? Depends. I find the lighter pipe's smooth finish a nice "tone-down" from the rough plumbing look. All together, this kit provides plenty of strength for most furniture and the rustic pipe look, but with a nicer, lighter finish. To me that is a plus--this is a very nice kit and costs less that if you'd pieced it together from real plumbing parts (I priced it out to compare), and looks retro but cleaner. I knew what to expect because while I got this kit free on Vine, I had purchased a nearly identical kit from another seller last year.
So, I'm giving it 5 stars for what it actually is and for the price, JUST BE AWARE THE NARRATIVE IS MISLEADING. Which is unfortunate because just like some people might want the heavier pipe, I'm betting more would be attracted to the look with a cleaner, lighter feel.
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Reviewed in the United States on December 31, 2025
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