# U.3 SSD Western Digital Ultrastar DC SN655 3.84 TB, PCIe 4.0 NVMe, 6800/2600 MB/s, TLC 3D NAND

**URL:** https://aio.lv/en/product--western-digital-0ts2458--10778413
**Data updated:** 2026-01-21 11:02 (EET)
**Category:** Solid State Drives (SSD)
**Manufacturer:** Western Digital
**Manufacturer code:** 0TS2458
**EAN:** 619659202323
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3 051.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 2 522.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--western-digital-0ts2458--10778413

## 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 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Enterprise U.3 SSD Western Digital Ultrastar DC SN655 with 3.84 TB capacity, PCIe 4.0 NVMe (NVMe 1.4b). Sequential read up to 6800 MB/s and write up to 2600 MB/s, random 4KB read/write up to 1,000,000 / 112,000 IOPS. TLC 3D NAND, hardware encryption, 2,500,000 h MTBF and 5-year warranty. Designed for servers and workstations, supports Windows, Linux and server OS; operating range 0–70 °C.

## Long description

The Western Digital Ultrastar DC SN655 3.84 TB U.3 PCIe 4.0 NVMe SSD is designed for data-center and cloud environments that require high-capacity, low-latency storage. This 2.5" U.3 drive combines a PCIe Generation 4.0 NVMe 1.4b controller with Western Digital BiCS5 TLC 3D NAND to deliver enterprise-class throughput and endurance for read-intensive, data-heavy applications. The drive supports dual-port redundancy, power-loss protection, and a projected 2.5M MTBF with a 5-year limited warranty.
Advantages
The Ultrastar DC SN655 provides high performance with up to 6800 MB/s sequential read and 2600 MB/s sequential write speeds, and low-latency IOPS (up to 1.1M IOPS) for demanding workloads. Dual-port redundancy and failover capability increase availability in multi-host environments. Enterprise features such as end-to-end data protection, power-loss protection, and a robust MTBF rating support reliable operation in scale-out and cloud infrastructures.
Suitable for
 Cloud storage platforms and hyperscale data centers
 Big data analytics and data lakes processing large unstructured datasets
 Machine learning and AI training or inference workloads
 High-density server and storage arrays using U.2/U.3 backplanes
Key specifications
 Form factor: 2.5" U.3
 Capacity: 3.84 TB (3840 GB)
 Interface: PCIe 4.0, NVMe 1.4b
 Sequential read speed: up to 6800 MB/s
 Sequential write speed: up to 2600 MB/s
 Random performance: up to 1.1M IOPS (read-intensive)
 NAND: Western Digital BiCS5 TLC 3D NAND
 Enterprise features: dual-port redundancy, end-to-end data protection, power-loss protection
 MTBF (projected): 2.5M hours
 Warranty: 5-year limited
 Weight: 0.1473 kg
How to use
Install the Ultrastar DC SN655 into a compatible U.3 or U.2 backplane in a server or storage enclosure that supports PCIe 4.0 NVMe drives. Ensure the host firmware and operating system have NVMe drivers and, if applicable, multi-path or dual-port configurations enabled to take advantage of redundancy and failover. Use standard drive management and monitoring tools to verify firmware version, health status, and SMART attributes. For initial deployment, perform any recommended firmware updates and follow your data-center provisioning procedures.
Usage recommendations
Deploy the Ultrastar DC SN655 in systems designed for enterprise NVMe drives and monitor drive health regularly. For optimal longevity and performance in read-intensive environments, configure the drive within supported RAID or scale-out architectures and enable available enterprise features such as power-loss protection and dual-port failover where supported by the platform.

## Specifications

### Features

| Feature | Value |
|---|---|
| SSD capacity | 3840 GB |
| SSD form factor | U.3 |
| Read speed | 6800 MB/s |
| Write speed | 2600 MB/s |
| Mean time between failures (MTBF) | 2500000 h |
| Memory type | TLC 3D NAND |
| Server operating systems supported | Y |
| Random write (4KB) | 112000 IOPS |
| Random read (4KB) | 1000000 IOPS |
| Hardware encryption | Yes |
| Component for | Server/workstation |
| NVMe | Yes |
| NVMe version | 1.4 |
| Interface | PCI Express 4.0 |
| Windows operating systems supported | Y |
| Linux operating systems supported | Y |
| Uncorrectable Bit Error Rate (UBER) | \< 1 per 10^15 bits read |

### Other features

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

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.1473 kg |
| Height | 14.9 mm |
| Width | 69.8 mm |
| Depth | 100.3 mm |

### Operational conditions

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

## FAQ

### How much does the U.3 SSD Western Digital Ultrastar DC SN655 3.84 TB cost, and is it available for purchase?

The price is 3,051.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 19 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, weight, 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 U.3 SSD Western Digital Ultrastar DC SN655 3.84 TB?

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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