WD Red NAS Internal Hard Drive 4TB - 256MB Cache

Solutions For SMB Customers
For up to 24 bay medium to large-scale NAS environments, the WD Red Pro drive is engineered to handle increased business workloads and carries a 5-year limited warranty.

NAS for Big Business
Add value to your business by enabling your employees to quickly and reliably sync their files and back up folders or share work with clients.

NASware 3.0 Technology
Seamless integration, robust data protection, and optimal performance for larger NAS systems that demand more.

Built for NAS Compatibility
WD Red Pro hard drives also have NASware technology and are purpose-built to balance performance and reliability in larger NAS and RAID environments.

Larger NAS Bay Shock Protection
A multi-axis shock sensor automatically detects subtle shock events that may occur in larger NAS environments and when combined with dynamic fly height technology, helps to adjust each read-write function to compensate for increased vibrations and protect data.

Designed For NAS
Desktop drives aren't purpose-built for NAS. But WD Red Pro drives with NASware 3.0 are. Our exclusive technology takes the guesswork out of selecting a drive. We can help you find the perfect storage for your NAS system.

Desktop drives aren't purpose-built for NAS. But WD Red Pro drives with NASware 3.0 are. Our exclusive technology takes the guesswork out of selecting a drive. We can help you find the perfect storage for your NAS system.

Specifically designed for use in NAS systems with up to 8 bays
Supports up to 180 TB/yr workload rate, Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred times (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations
NASware firmware for compatibility
Small and home office NAS systems in a 24/7 environment