Internal HDDs

Internal hard disk drives (HDDs) offer a cost-effective way to store large files and heavy-duty data for work, entertainment, and smart home video systems. 

What is an internal hard drive?

Internal HDDs offer low cost per GB or TB of storage, relying on magnetic disk-based storage to save and protect your data. Internal hard drives are some of the most common, reliable ways to store critical applications and content. 

You can use these drives to dependably store and quickly access data for home computing, multimedia, PC gaming, and more. 

Internal HDDs vs. External HDDs

Internal HDDs are installed in your computer, close to your CPU and other key components. This proximity and setup make internal HDDs faster and more durable than external HDDs. 

While external HDDs offer similar technology, they’re portable devices that connect to your computer via USB or FireWire™. They can store large amounts of data, but they can also be slower and less durable than internal HDDs. 

Can you use an internal hard drive as an external hard drive?

Because the underlying technology is the same, the drive can be removed from your computer and configured as an external storage device. 

This is a great way to add storage or extend the use of an internal HDD. For example, if you upgraded your existing 1TB1 internal HDD with a new 4TB internal HDD, you can extend the life of the older drive by using it as an external HDD. 


Internal HDDs for PC Gaming

Amp up your gaming with a WD_BLACK internal HDD so you can store your favorite titles and play them at peak performance.


Impressive storage

Store your favorite games — and still have room for the most demanding new releases — thanks to WD_BLACK internal HDDs with up to 10TB of capacity.1  


Next-level performance

Take gaming to the next level with WD_BLACK internal HDDs that deliver up to 256MB of DRAM cache. Pair with an internal SSD to maximize your gaming experience.


Increased reliability

StableTrac™ Technology — for capacities 2TB or higher — stabilizes our drives’ motor shafts and platters to boost your rig’s performance and durability. 

Leave no game behind

With a WD_BLACK internal HDD, keep your gaming library within arm’s reach and ready to play, thanks to massive storage configurations. 

WD Blue

Internal HDDs for Everyday Computing

Get the most out of your daily content — from documents and family photos to your favorite movies and more — with a WD Blue internal hard drive. 


Your PC, upgraded

Give a new lease on life to older computers with a WD Blue internal HDD, boosting storage capacity and everyday performance — all at a reasonable cost.


Efficient power

Stay efficient and streamline your computer setup with WD Blue internal HDDs, thanks to cutting-edge tech that keeps power consumption to a minimum.


Competitive compatibility

WD Blue internal HDDs are compatible across hundreds of systems, making it that much easier to revamp your computer and get your daily workflows back on track.

Give your PC a boost

Find affordable, reliable storage for your everyday needs — from your most important work files to your family’s favorite photo albums. 

WD Red

Internal HDDs for NAS Use

Turn your NAS (network attached storage) system into an easily accessible, digital media powerhouse with a compatible WD Red internal HDD, offering up to 20TB of space.


Maximum power

WD Red internal HDDs help your NAS system stream, share, and store your favorite content — wherever you have an internet connection.


Enhanced reliability

WD Red internal HDDs are optimized for enhanced reliability, supporting 24/7 workloads with solutions for families, home offices, and small and mid-sized teams’ IT hubs.


Scalable storage

Build a NAS array tailor-made for your needs with easily customizable, widely compatible WD Red Pro internal HDDs of up to 22TB each.

Built for NAS

Optimize your NAS system with WD Red internal hard drives, tried and tested for always-on workflows.

WD Purple

Internal HDDs for Smart Video Surveillance

WD Purple internal HDDs are custom-made for smart video surveillance and recording, with an intense workload rating of up to 180TB per year.


Perfect playback

Featuring Western Digital’s AllFrame® technology, WD Purple internal HDDs improve ATA streaming to help minimize frame loss and improve overall playback.


Rugged dependability

WD Purple internal hard drives are designed for the rigors of NVR and DVR video surveillance, including temperature fluctuations, vibrations, and more.


Serious scalability

Today’s surveillance cameras need to support multiple video streams — WD Purple’s internal HDDs can handle up to 64 single-stream HD cameras, helping you scale faster and smarter.

Smart storage for smart video

WD Purple internal HDDs for smart video applications are designed to deliver results in the toughest NVR environments.

Ultrastar and WD Gold

Internal HDDs for Data Center

Designed for public and private cloud environments, our internal HDDs for data centers help you store massive amounts of data reliably, cost effectively, and energy efficiently.


Store more, do more

HelioSeal, which hermetically seals helium inside our hard drives, allows more disks, quieter operation, and low power usage.


Fast data, faster decisions

The latest in HDD technology, OptiNAND adds a flash layer to offload expanded metadata, reducing DRAM need.


Scale efficiently, effectively

A breakthrough in HDD tech, EAMR (energy-assisted magnetic recording) enables higher areal density through increased bits per inch on HDD tracks.

Powering the enterprise

Drive exponential growth across your business with enterprise-class reliability, performance, and protection from our data center-ready internal HDDs.  

1. 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.