# 3.5" Ultrastar 4TB 7200 RPM 128MB SAS internal hard drive — HGST (4096 GB, 3.5")

**URL:** https://aio.lv/en/product--hgst-0f22941--12060007
**Data updated:** 2026-03-12 19:43 (EET)
**Category:** Hard Disk Drives (HDD)
**Manufacturer:** HGST
**Manufacturer code:** 0F22941
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

HGST Ultrastar 4TB internal hard drive, 3.5" form factor with 4096 GB capacity, 7200 RPM spindle speed and 128 MB cache. Enterprise-grade SAS interface drive with 2,000,000 h MTBF suitable for servers, storage arrays and backup systems. Practical for high-capacity, low-latency block storage and mixed read/write workloads.

## Long description

HGST Ultrastar 4TB 7200 RPM 128MB SAS internal hard drive is a 3.5" enterprise-class HDD with 4096 GB capacity, 7200 RPM spindle speed and 128 MB cache. Built for server and storage environments, this SAS drive offers block-storage performance and durability with a rated mean time between failures (MTBF) of 2,000,000 hours and a 3.5" form factor suitable for rack-mounted systems and storage arrays.
Advantages
The drive combines high capacity with a 7200 RPM spindle and a 128 MB buffer to deliver improved sequential and mixed read/write performance compared to lower-speed drives. With an enterprise-grade SAS interface and a design intended for continuous operation, it provides consistent low-latency access and reliability for demanding workloads. The 3.5" format and standard weight support straightforward integration into existing server bays and storage enclosures.
Suitable for
 Server storage and file servers
 Storage arrays and RAID configurations
 Backup systems and nearline archival storage
 Mixed read/write business applications and virtualization hosts
Key specifications
 Storage capacity: 4096 GB
 Form factor: 3.5"
 Spindle speed: 7200 RPM
 Cache (buffer) size: 128 MB
 Interface class: enterprise SAS (serial attached SCSI)
 Reliability: MTBF 2,000,000 hours
 Weight: 0.715 kg
How to use
Install the Ultrastar 3.5" drive into a compatible 3.5" drive bay or tray in your server or storage enclosure, ensuring the system supports SAS drives and the required interface speed. Use appropriate mounting screws or caddies and connect to the SAS backplane or HBA following your system manufacturer’s guidance. After physical installation, initialize, partition and format the drive within your operating system or storage controller to create volumes suitable for your workload. Verify RAID controller settings and any firmware compatibility notes before placing the drive into production.
Usage recommendations
For reliable operation in multi-drive arrays, monitor drive health via your storage management tools and ensure adequate cooling and vibration mitigation in rack configurations. Use the drive in environments aligned with enterprise workload requirements and adhere to recommended maintenance and backup practices to maximize service life and data integrity.

## Specifications

### Features

| Feature | Value |
|---|---|
| HDD capacity | 4096 GB |
| HDD size | 3.5 |
| HDD speed | 7200 |
| Mean time between failures (MTBF) | 2000000 h |
| Read seek time | 7.6 ms |
| Average latency | 4.16 ms |
| Write seek time | 8 ms |
| Bytes per sector | 512 |
| Start/stop cycles | 600000 |
| HDD interface transfer rate | 12 Gbit/s |
| HDD sustained transfer rate | 192 MiB/s |
| Interface | SAS |
| Type | HDD |
| Storage drive buffer size | 128 MB |

### Operational conditions

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -40 - 70 |
| Operating temperature (T-T) | 5 - 60 |
| Operating shock | 70 G |
| Non-operating shock | 300 G |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.715 kg |
| Height | 26.1 mm |
| Width | 101.6 mm |
| Depth | 147 mm |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 11 W |
| Power consumption (idle) | 7.7 W |
| Operating voltage | 5 / 12 |

## FAQ

### 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 HGST 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 HGST 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 HGST Ultrastar 4TB 3.5" 7200 RPM SAS 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/12060007/67591364_large.webp