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Description
Western Digital Ultrastar DC SN861 WUS6CA216PSP9X7 1.60 TB Solid State Drive - U.2 Internal - PCI Express NVMe (PCI Express NVMe 5.0 x4) - Mixed WorkloadThe Western Digital Ultrastar DC SN861 is a purpose built enterprise solid state drive designed to accelerate data center workloads with uncompromising reliability and scalable performance. This 1. 60 TB U. 2 internal NVMe SSD harnesses PCIe 5. 0 x4 to deliver abundant bandwidth, low latency, and consistent throughput across mixed workloads that include transactional databases, virtualized environments, large scale analytics, and AI enabled services.
The Western Digital Ultrastar DC SN861 is a purpose-built enterprise solid-state drive designed to accelerate data-center workloads with uncompromising reliability and scalable performance. This 1.60 TB U.2 internal NVMe SSD harnesses PCIe 5.0 x4 to deliver abundant bandwidth, low latency, and consistent throughput across mixed workloads that include transactional databases, virtualized environments, large-scale analytics, and AI-enabled services. Built for 24x7 operation in demanding environments, the SN861 combines robust endurance, power efficiency, and seamless integration with standard NVMe backplanes and controllers. If you’re upgrading a server rack, refreshing a storage array, or adding a high-performance tier to your data fabric, this Ultrastar SSD is engineered to help you meet service levels, reduce latency spikes, and improve overall system responsiveness.
- Performance leadership for mixed workloads: The SN861 leverages PCIe 5.0 x4 to unlock higher sustained bandwidth and powerful IOPS in real-world mixed-workload scenarios. Whether running OLTP databases, virtual desktop infrastructure, or analytics pipelines, you’ll experience quicker data access, faster index rebuilds, more responsive query processing, and smoother handling of concurrent operations. The architecture is designed to minimize queue depth bottlenecks and deliver predictable latency as demand fluctuates, enabling your applications to scale with confidence and maintain high service levels even during peak usage.
- U.2 form factor for seamless data-center integration: With a 2.5-inch U.2 internal form factor, the SN861 slots into standard enterprise backplanes and 1U to multi-node servers without chassis changes. This compatibility makes it an ideal upgrade for existing infrastructures that rely on familiar NVMe drive bays, hot-swap backplanes, and conventional RAID or software-defined storage configurations. By leveraging familiar connectors and airflow paths, data-center operators can deploy the SN861 quickly, minimize downtime, and preserve rack density while boosting overall I/O capacity across arrays and pools.
- Enterprise reliability and endurance for always-on workloads: Ultrastar drives are engineered to meet the demands of continuous operation. The SN861 emphasizes data integrity, error correction, and protection against data loss during power events, helping IT teams maintain service continuity in critical environments. Its rugged design supports long-term endurance in high-write, mixed-workload deployments, delivering steady performance without frequent degradations or throttling. This makes it a dependable backbone for databases, log storage, tiered caching, and workload accelerators in enterprise data centers.
- Efficient cooling and power management for dense deployments: In modern data centers, cooling and energy usage are as important as raw speed. The SN861 is engineered to balance performance with thermal efficiency, employing power-management features that optimize energy use during idle periods and ramp up performance when workloads demand it. This translates into lower total cost of ownership for multi-drive arrays, reduced heat output in dense enclosures, and improved reliability from better thermal headroom during sustained bursts. For operators prioritizing green computing, the drive offers a pragmatic blend of speed and efficiency without compromising reliability.
- Ease of deployment and broad compatibility: The SN861 is designed to fit into a wide range of enterprise environments, compatible with NVMe-enabled controllers, backplanes, and operating systems that recognize NVMe devices. Its standardized NVMe protocol and PCIe-based access streamline provisioning, cloning, and storage pool management, whether you’re building a new array from scratch or expanding an existing one. This makes it suitable for a variety of use cases—from mission-critical databases to high-velocity analytics—while allowing IT teams to leverage current administration tools and workflows for faster, safer deployment and ongoing maintenance.
Technical Details of Western Digital Ultrastar DC SN861 WUS6CA216PSP9X7 1.60 TB
- Capacity: 1.60 TB
- Form Factor: U.2 Internal (2.5-inch drive)
- Interface: PCIe Gen5 x4, NVMe
- Drive Type: Solid State Drive
- Product Family: Ultrastar DC SN861
- SKU: WUS6CA216PSP9X7
- Workload Profile: Mixed
How to install Western Digital Ultrastar DC SN861
- Verify compatibility: Confirm your server or storage chassis supports U.2 NVMe drives and PCIe 5.0 x4 interfaces, and ensure your backplane or controller is up to date with the latest firmware.
- Power down safely: Follow anti-static precautions and shut down the system before opening the chassis or handling any components.
- Access the drive bay: Locate a compatible U.2 drive slot or hot-swap bay in the server or storage enclosure and prepare the slot for the new drive.
- Install the drive: Insert the SN861 into the U.2 slot, align the connector, and secure the drive with any retention screws or backplane mechanisms as required by the chassis.
- Connect and verify: Attach the data and power connections to the NVMe backplane or controller, ensuring a snug, secure fit. Power up the system and check for drive detection in the BIOS/UEFI or server management interface.
- Initialize in OS or controller: Boot into the operating system or storage controller software, initialize the new NVMe device, partition if needed, and format for use in your storage pool or array. If you’re using RAID or a software-defined storage layer, configure it according to your data protection and performance requirements.
- Update firmware if available: Apply the latest firmware revision for the SN861 through the vendor’s update utility to optimize performance and reliability in your specific workload mix.
Frequently asked questions
- Q: What workloads is the Ultrastar DC SN861 best suited for? A: It is designed for mixed workloads in data-center environments, delivering balanced performance for databases, virtualization, analytics, and high-IOPS applications on NVMe backplanes. This makes it a strong candidate for OLTP databases, real-time analytics, caching layers, and edge or core storage ecosystems where rapid data access and predictable latency matter.
- Q: Is this drive compatible with my server? A: Compatibility depends on having a U.2 NVMe interface (PCIe 5.0 x4 capable) and a backplane or controller that can manage NVMe devices. Always verify with your hardware vendor for firmware requirements, BIOS settings, and supported configurations before purchase or deployment.
- Q: What operating systems support this drive? A: Ultrastar NVMe SSDs are generally compatible with major server operating systems. After installation, format and initialize using the OS storage tools or a hardware controller utility, depending on your setup. Specific compatibility may vary with controller firmware and storage stack, so consult the controller documentation if you plan advanced features like tiering or RAID configurations.
- Q: Does it support hot-swapping? A: In many data-center configurations, U.2 drives can be hot-swapped when connected to a backplane that supports hot-swapping. Confirm with your chassis and backplane specifications, and ensure proper safety procedures are followed. If hot-swapping is required, plan maintenance windows and backup strategies accordingly.
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4.6 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
A Beautiful Edition of a Timeless Journey
This deluxe edition transforms Coelho's beloved fable into a truly special keepsake. The larger format, quality paper, and thoughtful design details make it feel like the gift it's meant to be—whether you're giving it to someone at a crossroads in their life or treating yourself to an upgrade from a worn paperback copy.
The story itself remains as powerful as ever. Santiago's journey across the desert in search of treasure is deceptively simple on the surface, but Coelho's allegory works on multiple levels. Yes, it's about following your dreams, but it's also about learning to read the signs the universe offers, understanding that the journey itself transforms us, and recognizing that what we seek is often closer than we think.
I know some readers find the philosophy too simplistic or New Age-y, but I think that misses the point. Coelho isn't trying to be subtle—he's distilling universal truths into their essence. Sometimes we need straightforward wisdom delivered clearly, especially when we're overthinking our own paths.
This edition makes a perfect graduation gift, retirement present, or milestone marker for anyone embarking on something new. The story has earned its place as a modern classic, and this deluxe version does it justice.
"When you want something, all the universe conspires in helping you to achieve it." Still resonates.
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Reviewed in the United States on January 20, 2026
★★★★★ 5
Reading this book was an enlightening experience for me.
Format: Kindle
The Alchemist by Paulo Coelho provided hours of magical reading. It isn’t a plot-driven book, but rather a novel that provides a quiet sense of purpose and a deeper understanding of the universe. The period the story takes place isn’t clear, but it begins in Spain.
Santiago, a young man, perhaps in his teens, studied to be a priest, but realized what he really wanted to do was to be a shepherd, to move around, see new places. With the blessings of his family, he sets out with his flock of sheep and discovers not only the world, but himself. It soon becomes clear that what he searches for is an alchemist, a person who transforms things for the better.
Santiago meets people along the way who teach him many truths, some good, some evil, but each experience leads him closer to life’s true meaning.
This novel has an interesting history. “The Foreword” written by the author in 2014 speaks about the interesting path the novel has taken. The book was first published in 1989 in his native Brazil. Only one person bought a copy the first week of its release, then six months later another copy sold to the same person! His publisher cancelled the contract. Another publisher agreed to take the book and gradually had great success. An American read the book and wanted to translate the book from Spanish to English and find a publisher in the United States. It didn’t happen overnight, but the book became a phenomenon, has been translated into more than eighty different languages, and has sold thousands of copies.
Paulo Coelho never wavered in his faith in the book because it speaks of his own beliefs: A man sets out on a journey seeking a beautiful or magical place and then realizes the treasure lies within himself.
Reading The Alchemist was an enlightening experience for me. I highly recommend it for those who appreciate life’s purpose and who seek wisdom of the universe.
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Reviewed in the United States on October 7, 2025
★★★★★ 3
Good book, but I think the ending is a betrayal
Format: Kindle
As I write this I realize that I am talking about a modern classic, one that I must admit I did enjoy reading overall. But that said, I simply didn’t find this book to be as moving a book as I thought I would.
The novel tells a simple though interesting tale about a boy’s attempts to search for a treasure revealed to him in multiple dreams. Along the way he encounters many people and situations that enable him to learn and grow spiritually, aided by either his clever and inquisitive mind or the guidance of others who effectively serve as mentors.
For the most part, I did like THE ALCHEMIST. I enjoyed the simple style of writing and the stripped-down nature of the tale. We don’t get into the “five senses” kind of environmental description – Coelho’s tale is more of a parable at its heart, and in fact is a story OF the heart and of the mind. I also admired the central character as well: Santiago is not only aptly named, but he is a likable boy full of pleasant good will and a gentle disposition, ready to work and clever when it comes to the things one must do to succeed. He is also brave, and remains positive whether things are going well or they are not, choosing to do the best he can at whatever hand he is dealt by life.
Here, however, comes the problem. While I felt that the book worked for a good deal of the story, it weakened a bit toward the end. Part of it was the story’s mumbo-jumbo manner of religiosity; while I understood the author’s decision to tackle his subject in this simple, unadorned manner, it didn’t hold up at times. Certainly, the notion that there is a hidden one-ness at the heart of all matter is a notion that works well through a simplistic style, a la the clean, stripped-down beliefs at the heart of innocents or the way we conceptualize the purity of, say, the Native Americans culture when it came to nature. But when the boy began addressing the wind and other elements (a point I’ll get to further in a moment), it really broke down for me. It stretched credulity, reducing Nature to a kind of repertory theater. I will speak further on this scene in a second.
HERE I ONE ASPECT THAT WOULD BE CONSIDERED A SPOILER – SKIP THIS PARAGRAPH.
What I particularly disliked about THE ALCHEMIST is that I felt it broke its own rules. Again, I’m discussing the ending here, so beware. It bothered me that the ending should have been a point when the boy’s budding spirituality took its hold upon the lad. I ask: why would a person who is in essence learning so much about what really matters about life still keep seeking money? His interest in gold is not the same as the alchemist’s interest in it: the elder character is a man who can manipulate the elements in a near-magical manner, a process he leaves the boy to discover for himself (like when he fact almost comically abandons him to magically “make like the wind” for men who will otherwise kill him – comical because once the alchemist places the boy IN the situation, he simply goes off to play with his birds. And one more thing: while the twist at the end was clever, it disappointed me for two reasons: the first, for point I made above, but the second is trickier. The boy learns that the truth the material treasure HE sought is NOT there; it is, he learns, where the OTHER character says it is. Clever, sure… but is the author telling us the other character’s “information” is more true? Why is that? Was it that the other boy was favored? OR, which is probably more true, is it because whatever force it is that imparts such “wisdom” does so knowing that one boy WILL follow his heart and the other won’t. Think: if the other boy does follow his quest then Santiago’s info is going to be wrong. But IF things are meant to work out the way they actually do, then is Coelho indeed telling us that these actions were predetermined? This sends, I think, the opposite message the author wants to send.
THE ALCHEMIST is a book that people will enjoy for its simple values, and the tale of this young boy’s spiritual quest has satisfied many. While I too enjoyed it and liked the boy, I ultimately felt a bit disappointed in what I felt to be a contrived ending. Though I initially liked the twist at the end, the story could have ended on that exact moment and left me happier. As it is, I felt the final portion of the boy’s quest betrayed his AND the author’s intentions, which hurt the novel for me.
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Reviewed in the United States on October 4, 2016
★★★★★ 5
Only for real men...
Style: Rough Exfoliation
So much crying here. This is not a luxurious sponge. But if your are a man, this is the hot ticket. Coarse but not like a cheese grater. Holds liquid soap well. Foams well. The elastic strap let's you keep hold of it easily and will reverse over the pad so you can use either side. Leaves your skin pink and fresh... in a manly sort of way. 😉
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Reviewed in the United States on April 8, 2026
★★★★★ 5
SELF TANNERS MUST HAVE!!
Style: Rough Exfoliation
This product is perfect for those of us who use self tanners!! For self tanners to work well and not look splotchy one needs well exfoliated skin and this sponge is exactly the right tool for the task! My skin feels so much softer, my self tanner working much better and my body lotion seems to absorb more quickly. These sponges are easy to hold and have a loop to hang from while they dry.
Every week when I wash my towels I toss the sponge(s) into a lingerie bag and wash with the towels. I always hang to dry so no idea how they’d handle a dryer.
I will never be without these sponges!
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Reviewed in the United States on April 8, 2026
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