# HDD Western Digital 20 TB 3.5" SAS3 Ultrastar DC HC555

**URL:** https://aio.lv/en/product--western-digital-0b47749--11195826
**Data updated:** 2025-12-16 18:08 (EET)
**Category:** Hard Disk Drives (HDD)
**Manufacturer:** Western Digital
**Manufacturer code:** 0B47749
**Warranty:** 5 Years
**Availability:** Available for order
**Price:** 1 074.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 888.01 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--western-digital-0b47749--11195826

## Delivery options

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

## Summary description

The Western Digital Ultrastar DC HC555 is a high-capacity internal hard drive with 20 TB storage, 7200 RPM speed, and a 512 MB buffer. Designed for enterprise applications, it offers reliable performance and durability. The 3.5" SAS3 interface ensures fast data transfer rates, making it ideal for data centers and demanding workloads.

## Long description

The Western Digital Ultrastar DC HC555 20 TB 3.5" SAS3 is a high-capacity internal hard drive designed for enterprise and data center use. With 20 TB of storage, 7200 RPM rotation speed and a 512 MB buffer, this Ultrastar drive combines proven hardware platforms and modern technologies to deliver the capacity, performance and reliability required for continuous 24×7 multi-user workloads.
Advantages
The HC555 uses energy-assisted perpendicular magnetic recording (ePMR) and a Triple-Stage Actuator (TSA) to increase tracks-per-inch and enable high areal density while keeping power consumption low. HelioSeal helium technology provides a stable internal environment for reduced power profile. Built on a platform deployed in thousands of data centers, the drive offers a projected 2.5M-hour MTBF and field-proven dependability. Integrated rotation vibration (RV) sensors and multi-axis shock sensors help maintain performance and protect data under vibration and shock.
Suitable for
Enterprise data center storage
High-intensity 24×7 multi-user workloads
Archive and capacity-optimized storage
Servers and storage arrays with SAS3 interface
Key specifications
Capacity: 20 TB (20000 GB)
Form factor: 3.5"
Interface: SAS3
Rotational speed: 7200 RPM
Buffer: 512 MB
MTBF: 2,500,000 hours
Weight: 0.69 kg
How to use
Install the HDD in a compatible 3.5" drive bay or storage enclosure that supports SAS3 connectivity. Follow your server or array vendor instructions for hot-swap or fixed mounting procedures, and ensure firmware and drivers are up to date. Configure RAID or other data protection as required by your environment, then initialize and format the drive according to your operating system or storage controller guidelines.
Usage recommendations
For best results, deploy the Ultrastar DC HC555 in systems designed for enterprise-class HDDs with adequate cooling and vibration control. Use appropriate RAID levels or redundancy strategies for critical data, monitor drive health with vendor tools, and follow manufacturer guidelines for firmware updates and operating environment.

## 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 | 12 Gbit/s |
| HDD sustained transfer rate | 272 MiB/s |
| Component for | Server/workstation |
| HDD average transfer rate | 285 MB/s |
| Interface | SAS3 |
| 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 |
|---|---|
| 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) | 9.2 W |
| Operating voltage | 5 V |
| Power consumption (idle) | 5.7 W |

## FAQ

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

The price is 1,074.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 206 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 Thursday 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, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can HDD Western Digital 20 TB Ultrastar DC HC555 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: 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 HDD Western Digital 20 TB Ultrastar DC HC555?

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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