# SSD disk Western Digital 3.84 TB U.2 PCI Express 5.0 NVMe Ultrastar DC SN861

**URL:** https://aio.lv/en/product--western-digital-0ts2526--11426505
**Data updated:** 2025-12-30 21:18 (EET)
**Category:** Solid State Drives (SSD)
**Manufacturer:** Western Digital
**Manufacturer code:** 0TS2526
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2 053.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 1 697.51 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--western-digital-0ts2526--11426505

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The Western Digital Ultrastar DC SN861 is a high-performance SSD with a capacity of 3.84 TB. It features a U.2 form factor and utilizes PCI Express 5.0 NVMe technology, offering impressive read speeds of up to 13700 MB/s and write speeds of 7200 MB/s. Designed for servers and workstations, this SSD ensures fast data access and reliability for demanding applications.

## Long description

The Western Digital Ultrastar DC SN861 3.84 TB U.2 PCIe 5.0 NVMe SSD is a high-performance enterprise drive designed for servers, hyperscale and cloud data centers, and compute-intensive applications. It delivers PCIe Gen5 read/write throughput, low latency and optimized power efficiency in a U.2 form factor to support demanding AI, machine learning and mixed workload environments.
Advantages
The DC SN861 provides high random read performance and strong sustained write capability with PCIe 5.0 bandwidth, balanced with power-efficient design to maximize IOPs per watt. It includes enterprise features such as Power Loss Protection, End-to-End Data Path Protection and TCG security/encryption, plus support for NVMe 2.02, NVMe MI 1.2c, Flexible Data Placement and OCP 2.0. The drive is available in multiple capacities and carries a limited 5-year warranty.
Suitable for
AI training and inference servers
Machine learning workloads
Hyperscale and cloud data center storage
Enterprise databases and virtualisation
Mixed read/write intensive applications
Key specifications
Form factor: U.2
Capacity: 3.84 TB (3840 GB)
Interface: PCI Express 5.0, NVMe
Max sequential read speed: up to 13,700 MB/s
Max sequential write speed: up to 7,200 MB/s
Standards: NVMe 2.02, NVMe MI 1.2c, OCP 2.0 support
Endurance options: 1 and 3 DWPD (as supported by model family)
Warranty: 5-year limited warranty
How to use
Install the Ultrastar DC SN861 into a compatible U.2 drive bay or adapter on a PCIe Gen5-capable server or workstation. Ensure the system BIOS/firmware and NVMe drivers support PCIe 5.0 and NVMe 2.02 for full functionality. Configure the drive within the operating system or storage controller, initialise and format as required by your workload, and apply any vendor-recommended firmware or security configurations (for example TCG encryption) before use.
Usage recommendations
For best results in AI and mixed workloads, pair the DC SN861 with PCIe Gen5 platforms, maintain up-to-date firmware, and monitor drive health and endurance. Use appropriate cooling and power-loss protection measures in server environments to preserve performance and data integrity.

## Specifications

### Features

| Feature | Value |
|---|---|
| SSD capacity | 3840 GB |
| SSD form factor | U.2 |
| Read speed | 13700 MB/s |
| Write speed | 7200 MB/s |
| Mean time between failures (MTBF) | 2500000 h |
| Random write (4KB) | 330000 IOPS |
| Random read (4KB) | 3300000 IOPS |
| Read latency | 65 µs |
| Write latency | 8 µs |
| Hardware encryption | Yes |
| Component for | Server/workstation |
| NVMe | Yes |
| NVMe version | 2.0 |
| Interface | PCI Express 5.0 |
| Uncorrectable Bit Error Rate (UBER) | \< 1 per 10^17 bits read |
| Drive writes per day (DWPD) | 1 |

### Other features

| Feature | Value |
|---|---|
| Warranty period | 5 year(s) |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 15 mm |
| Width | 69.8 mm |
| Depth | 100.4 mm |

### Power

| Feature | Value |
|---|---|
| Power consumption (idle) | -5 W |

### Operational conditions

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | 0 - 70 |

## FAQ

### How much does the SSD disk Western Digital 3.84 TB Ultrastar DC SN861 cost, and is it available for purchase?

The price is 2,053.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 08.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can SSD disk Western Digital 3.84 TB Ultrastar DC SN861 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Western Digital products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Western Digital service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: ssd form factor, ssd capacity, read speed, write speed, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for SSD disk Western Digital 3.84 TB Ultrastar DC SN861?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11426505/66175610_large.webp