# SSD disk Western Digital 30.7 TB U.3 PCI Express 4.0 Ultrastar DC SN655

**URL:** https://aio.lv/en/product--western-digital-0ts2509--11323826
**Data updated:** 2026-01-08 10:39 (EET)
**Category:** Solid State Drives (SSD)
**Manufacturer:** Western Digital
**Manufacturer code:** 0TS2509
**EAN:** 0619659209889
**Warranty:** 5 Years
**Availability:** Available for order
**Price:** 19 628.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 16 222.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--western-digital-0ts2509--11323826

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 25.06.2026 | free |
| Pickup points | 30.06.2026 | 1.99 EUR |
| Courier delivery to door | 30.06.2026 | 4.99 EUR |

## Summary description

The Western Digital Ultrastar DC SN655 is a high-performance SSD with a capacity of 30.7 TB. It features a U.3 form factor and utilizes PCI Express 4.0 NVMe technology for fast data transfer. With read speeds of up to 6100 MB/s and write speeds of 3400 MB/s, it is ideal for server and workstation applications, providing reliable performance and efficiency for demanding workloads.

## Long description

The Western Digital Ultrastar DC SN655 30.7 TB U.3 NVMe SSD is a high-capacity, enterprise-grade drive designed for cloud, server and scale-out storage environments. Built on PCIe 4.0 and Western Digital BiCS5 TLC 3D NAND, the SN655 delivers low-latency, read-intensive performance and dual-port redundancy for continuous availability. It supports standard 2.5" infrastructure with U.2 and U.3 backplane compatibility and includes power-loss protection and a 5-year limited warranty.
Advantages
The Ultrastar DC SN655 combines high capacity and high IOPS with PCIe Gen4 performance and enterprise features such as dual-port failover, end-to-end data protection and power-loss protection. Its 30.7 TB capacity and modern controller architecture enable efficient handling of large unstructured datasets while maintaining QoS consistency for demanding cloud and AI workloads. The drive is designed for compatibility with existing 2.5" U.2/U.3 backplanes and provides a projected MTBF of 2.5M hours.
Suitable for
 Cloud storage and hyperscale server deployments
 Big data processing and analytics
 Machine learning and artificial intelligence training/inference
 High-density scale-out storage systems
Key specifications
 Model: Western Digital Ultrastar DC SN655 (MPN: 0TS2509, EAN: 0619659209889)
 Form factor: U.3 (compatible with 2.5" U.2/U.3 backplanes)
 Capacity: 30.7 TB (30720 GB)
 Interface: PCI Express 4.0, NVMe 1.4b
 Read speed (sequential): up to 6100 MB/s
 Write speed (sequential): up to 3400 MB/s
 NAND: Western Digital BiCS5 TLC 3D NAND
 Enterprise endurance: 1.0 DW/D (device write per day)
 MTBF: 2.5M hours (projected)
 Weight: 0.1473 kg
 Warranty: 5-year limited
How to use
Install the SN655 into a compatible U.3 or U.2 slot on a server or storage chassis that supports PCIe 4.0 NVMe drives. Ensure the host firmware and operating system NVMe drivers support NVMe 1.4b and that backplane wiring supports dual-port functionality if used. After physical installation, initialize and format the drive in your OS or storage controller according to your deployment plan, configure RAID or software-defined storage as needed, and verify that power-loss protection and SMART attributes are reported correctly.
Usage recommendations
For read-intensive, large-scale workloads such as analytics, AI and large object datasets, use the Ultrastar DC SN655 to scale capacity while maintaining QoS. Pair with servers and controllers that fully support PCIe Gen4 and U.3 backplanes, monitor SMART metrics and firmware updates from Western Digital, and design redundancy (dual-port or cluster-level) to ensure availability for mission-critical data.

## Specifications

### Features

| Feature | Value |
|---|---|
| SSD capacity | 30720 GB |
| SSD form factor | U.3 |
| Read speed | 6100 MB/s |
| Write speed | 3400 MB/s |
| Mean time between failures (MTBF) | 2500000 h |
| Memory type | TLC 3D NAND |
| Server operating systems supported | Y |
| Random write (4KB) | 660000 IOPS |
| Random read (4KB) | 10520000 IOPS |
| Read latency | 110 µs |
| Write latency | 15 µs |
| 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 SSD disk Western Digital 30.7 TB Ultrastar DC SN655 cost, and is it available for purchase?

The price is 19,628.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 35 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 25.06.2026 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, 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 SSD disk Western Digital 30.7 TB Ultrastar DC SN655?

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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