# Internal 3.5" HDD Synology HAT5320-4T — 4 TB, 7200 RPM, 512 MB cache, SATA, hot-swap, for NAS

**URL:** https://aio.lv/en/product--synology-hat5320-4t--11563730
**Data updated:** 2026-01-21 12:10 (EET)
**Category:** Hard Disk Drives (HDD)
**Manufacturer:** SYNOLOGY
**Manufacturer code:** HAT5320-4T
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 462.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 382.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--synology-hat5320-4t--11563730

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

3.5" internal hard drive Synology HAT5320-4T with 4 TB capacity, 7200 RPM spindle speed and 512 MB cache. SATA interface, hot-swap support and sustained transfer up to 281 MiB/s. Designed for NAS use with MTBF 2,000,000 h and 550 TB/year workload limit. Suitable for continuous storage, backup and multi-drive NAS arrays in business or home environments.

## Long description

The Synology HAT5320-4T is a 4 TB internal hard drive built for NAS environments and data-intensive applications. With a 7200 RPM spindle speed, 512 MB buffer and SATA 3.5" form factor, the drive delivers higher sequential read performance compared with similar-capacity drives and is optimized for large-scale video surveillance, multimedia post-production and enterprise file servers.
Advantages
The drive offers high endurance and reliability with a rated MTBF of up to 2,000,000 hours, a workload rating of 550 TB/year and persistent write cache technology. Firmware and Synology DSM integration enable streamlined maintenance, including one-click firmware updates that reduce update time to a few minutes and remove the need for command-line operations. Using Synology drives together with Synology systems simplifies support and infrastructure management.
Suitable for
NAS systems for small and medium businesses
Video surveillance storage and archival systems
Multimedia post-production workflows
Enterprise file servers and backup targets
Key specifications
Capacity: 4 TB (4000 GB)
Form factor: 3.5" SATA
Rotational speed: 7200 RPM
Cache buffer: 512 MB
MTBF: 2,000,000 hours
Workload rating: 550 TB/year
Weight: 0.69 kg
How to use
Install the HAT5320-4T into a compatible 3.5" SATA drive bay following your NAS or server hardware instructions. Configure the drive within your Synology DSM or chosen storage management software, create or expand volumes and configure RAID or file-sharing settings according to your needs. Monitor drive health and performance through DSM’s storage manager and enable persistent write cache and other available features for sustained workloads.
Usage recommendations
For continuous, high-load environments, pair HAT5320-4T drives with Synology NAS or IP SAN systems and keep DSM up to date. Schedule regular backups and monitor SMART/health metrics to ensure long-term reliability.

## Specifications

### Features

| Feature | Value |
|---|---|
| HDD capacity | 4000 GB |
| HDD size | 3.5 |
| HDD speed | 7200 |
| Mean time between failures (MTBF) | 2000000 h |
| Hot-swap | Yes |
| HDD sustained transfer rate | 281 MiB/s |
| Component for | NAS |
| Workload rate limit | 550 TB/year |
| Interface | Serial ATA |
| Type | HDD |
| Storage drive buffer size | 512 MB |

### Operational conditions

| Feature | Value |
|---|---|
| Operating altitude | -304.8 - 3.05 |
| Operating relative humidity (H-H) | 5 - 90 |
| Storage temperature (T-T) | -40 - 70 |
| Operating temperature (T-T) | 5 - 60 |
| Storage relative humidity (H-H) | 5 - 95 |
| Non-operating altitude | -304.8 - 12.2 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.69 kg |
| Height | 26.1 mm |
| Width | 101.8 mm |
| Depth | 147 mm |

## FAQ

### How much does the Internal Synology HAT5320-4T 3.5" 4TB HDD cost, and is it available for purchase?

The price is 462.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 171 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 16.07.2026 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, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Internal Synology HAT5320-4T 3.5" 4TB HDD 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 SYNOLOGY 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 SYNOLOGY 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 Internal Synology HAT5320-4T 3.5" 4TB 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/11563730/66864528_large.webp