# Western Digital Ultrastar DC SN861 6.4 TB Enterprise SSD, U.2 NVMe PCIe 5.0

**URL:** https://aio.lv/en/product--western-digital-0ts2539--12520012
**Data updated:** 2026-06-17 08:21 (EEST)
**Category:** Solid State Drives (SSD)
**Manufacturer:** Western Digital
**Manufacturer code:** 0TS2539
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8 871.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 7 332.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--western-digital-0ts2539--12520012

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Western Digital Ultrastar DC SN861 is a high-performance 6.4 TB enterprise-grade SSD designed for servers and workstations. Featuring a U.2 form factor and PCIe 5.0 NVMe interface, it delivers exceptional read speeds of up to 13700 MB/s and write speeds of 7500 MB/s. This drive is engineered for demanding data center environments, providing reliable, high-speed storage for mission-critical applications and intensive data processing tasks.

## Long description

The Western Digital Ultrastar DC SN861 6.4 TB Enterprise SSD is a high-performance storage solution engineered for the rigorous demands of modern data centers, servers, and workstations. Utilizing the advanced PCIe 5.0 interface and the U.2 form factor, this drive provides exceptional throughput and low latency, making it an ideal choice for mission-critical applications that require consistent and reliable data access.
Advantages
This enterprise-grade SSD excels by offering industry-leading read and write speeds, significantly accelerating data-intensive tasks such as machine learning and artificial intelligence processing. Its architecture is specifically optimized for power efficiency, delivering a superior performance-per-watt ratio that helps reduce operational costs in large-scale environments. Furthermore, the drive incorporates robust enterprise features, including power loss protection and advanced data path security, ensuring that sensitive information remains protected and consistent even under heavy, mixed-workload conditions.
Suitable for
Compute-intensive AI and machine learning applications
Hyperscale and cloud data center storage
Mission-critical enterprise server environments
High-performance workstation data processing
This drive may not be suitable for standard consumer desktop computers or laptops, as it requires a U.2 interface and PCIe 5.0 compatibility, which are typically found only in professional server hardware. Additionally, it is not intended for basic storage needs where high-speed enterprise performance is not required.
Key specifications
Capacity: 6.4 TB
Form factor: U.2
Interface: PCIe 5.0 NVMe
Read speed: up to 13700 MB/s
Write speed: up to 7500 MB/s
Support: NVMe 2.0 and OCP 2.0
To install the Western Digital Ultrastar DC SN861, ensure your server or workstation motherboard supports the U.2 connection and PCIe 5.0 standards. The drive should be mounted in a compatible drive bay with adequate airflow to maintain optimal operating temperatures. Once physically installed, the drive is managed through your system's BIOS or RAID controller settings, where you can configure it for your specific storage array or operating system requirements.
What to consider before purchase
Verify that your hardware supports the U.2 physical interface
Ensure your system architecture is compatible with PCIe 5.0 speeds
Confirm that your power supply and cooling systems meet enterprise requirements
Assess your workload needs to ensure the 6.4 TB capacity aligns with your data storage strategy
For optimal performance and longevity, ensure that your server firmware is updated to the latest version to fully support NVMe 2.0 features and maintain consistent Quality of Service during peak operational loads.

## Specifications

### Features

| Feature | Value |
|---|---|
| SSD capacity | 6400 GB |
| SSD form factor | U.2 |
| Read speed | 13700 MB/s |
| Write speed | 7500 MB/s |
| Mean time between failures (MTBF) | 2500000 h |
| Random write (4KB) | 800000 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) | 3 |

### 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 Western Digital Ultrastar DC SN861 6.4 TB Enterprise SSD cost, and is it available for purchase?

The price is 8,871.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 09.07.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### 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 Western Digital Ultrastar DC SN861 6.4 TB Enterprise SSD?

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

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