# Internal HDD Western Digital Ultrastar DC HC555 — 20 TB, 3.5", 7200 RPM, 512 MB cache, SATA III

**URL:** https://aio.lv/en/product--western-digital-0b48719--12102655
**Data updated:** 2026-03-20 09:52 (EET)
**Category:** Hard Disk Drives (HDD)
**Manufacturer:** Western Digital
**Manufacturer code:** 0B48719
**EAN:** 0829686009462
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 212.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 1 002.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--western-digital-0b48719--12102655

## 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

Western Digital Ultrastar DC HC555 is a 3.5" internal HDD designed for high-capacity storage. It offers 20 TB capacity, 7200 RPM spindle speed, 512 MB buffer and SATA III interface. With a 2.5 million-hour MTBF and 0.69 kg weight, it suits enterprise and server environments, cold storage and dense archive applications.

## Long description

Western Digital Ultrastar DC HC555 is a 3.5" internal HDD designed for enterprise and data centre applications that require very high capacity and continuous operation. This 20 TB drive features a 7200 RPM spindle, 512 MB buffer and a SATA III interface, combining large storage density with technologies intended to minimise power consumption and maintain reliable performance in multi-drive systems. The drive is helium-sealed to reduce internal friction and thermal load, and incorporates vibration and shock mitigation systems plus a projected 2.5 million-hour MTBF for long-term serviceability.
Advantages
The Ultrastar DC HC555 provides high capacity per bay while keeping power and cooling demands low through helium fill and energy-assisted magnetic recording. A triple-stage actuator improves track precision for higher areal density, and built-in rotation vibration sensors and multi-axis shock detection help preserve performance in dense server enclosures. Proven hardware and firmware designs enable straightforward qualification and integration into existing infrastructures.
Suitable for
 Enterprise and hyperscale data centres requiring high-capacity nearline storage
 Archive and cold storage systems where density and low power are priorities
 High-capacity server and workstation storage pools for backup and large datasets
 Storage arrays and JBOD enclosures with multi-drive configurations
Key specifications
 Capacity: 20 TB
 Form factor: 3.5 inch
 Interface: SATA III (6 Gbit/s)
 Spindle speed: 7200 RPM
 Cache / buffer: 512 MB
 Average weight: 0.69 kg
 Designed reliability (MTBF): 2,500,000 hours
 Helium-sealed internal environment for reduced power and thermal load
How to use
Install the Ultrastar DC HC555 into a compatible 3.5" drive bay or carrier and connect it to a SATA III port on the host controller. Ensure the system firmware and RAID/host controller support high-capacity drives and that any required drive configuration or firmware updates are applied according to your server or storage vendor guidance. In multi-drive arrays, allow sufficient airflow and observe manufacturer-recommended spacing and vibration mitigation measures to maintain optimal operating conditions.
Usage recommendations
Use this drive for nearline and cold storage workloads, large sequential throughput tasks and consolidated archival systems. For mixed or high IOPS workloads, validate performance in your intended configuration and consider appropriate RAID levels and caching strategies to meet availability and rebuild objectives.

## Specifications

### Features

| Feature | Value |
|---|---|
| HDD capacity | 20000 GB |
| HDD size | 3.5 |
| HDD speed | 7200 |
| Mean time between failures (MTBF) | 2500000 h |
| Average latency | 4.16 ms |
| Start/stop cycles | 600000 |
| Hot-swap | No |
| HDD interface transfer rate | 6 Gbit/s |
| HDD sustained transfer rate | 272 MiB/s |
| Component for | Server/workstation |
| HDD average transfer rate | 285 MB/s |
| Interface | Serial ATA III |
| Type | HDD |
| Storage drive buffer size | 512 MB |
| 24/7 operation | Yes |

### Operational conditions

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -40 - 70 |
| Operating temperature (T-T) | 5 - 60 |
| Operating shock | 50 G |
| Non-operating shock | 250 G |
| Non-operating vibration | 1.04 G |
| Operating vibration | 0.67 G |

### Other features

| Feature | Value |
|---|---|
| Certification | BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL |
| Warranty period | 5 year(s) |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.69 kg |
| Height | 26.1 mm |
| Width | 101.6 mm |
| Depth | 147 mm |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 6.4 W |
| Power consumption (idle) | 5.3 W |
| Operating voltage | 5 / 12 |

## FAQ

### How much does the Western Digital Ultrastar DC HC555 20 TB HDD cost, and is it available for purchase?

The price is 1,212.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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: Cash payment, 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: hdd capacity, hdd size, hdd speed, mean time between failures (mtbf), 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 Western Digital Ultrastar DC HC555 20 TB HDD?

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/12102655/67636675_large.webp