Western Digital Red Plus 4TB SATA3, 5400rpm, 256MB cache (WD40EFPX)

- Powerful hard drives designed for performance, reliability and power efficiency in small to medium NAS environments.
WD Red Plus drives deliver the speed and capacity required to store, protect and share growing amounts of data in mid-sized RAID-optimized NAS systems with increased power efficiency.

Tuned for NAS with NASware
- Western Digital’s exclusive NASware technology fine tunes drive parameters to match NAS system workloads which helps increase performance and reliability.

Designed for Continuous Operation
- Since your NAS system is always on, a reliable drive is essential. WD Red Plus hard drives are designed for systems that operate 24x7, giving users the confidence of knowing they can reliably access their data.

Tested for Dependable Compatibility
- Western Digital partners with a wide range of NAS system vendors for extensive testing to ensure compatibility with most NAS enclosures.

Optimized for Lower TCO
- WD Red Plus drives are engineered to use less power (versus previous models) and run cooler, which reduces operating costs and helps reduce heat in thermally challenged NAS boxes.

Powered for Strong Performance
-Despite using less power, the drives have plenty of bandwidth to handle the mixed performance demands of multi-drive NAS systems.

Balanced for Increased Reliability
- Hard drives that are not properly balanced may cause excessive vibration and noise in multi-drive systems, which could reduce hard drive life span and degrade the performance over time. Our enhanced dual-plane balance control technology significantly improves balance and increases overall drive performance and reliability.

Backed by World-Class Support and Warranty
- As an industry-leading hard drive manufacturer, Western Digital stands behind their NAS storage solutions with the assurance of a 3-year limited warranty and world-class support services for hassle free data storage.

Desktop drives vs. WD Red Plus
- It is important to choose a drive purpose-built for RAID-optimized NAS systems to ensure optimum performance and preserve your valuable data. Take the following into consideration when choosing a hard drive for your NAS:
• Compatibility: Unlike desktop drives, WD Red Plus hard drives are specifically designed and tested for NAS and include NASware™ technology which fine tunes drive parameters to match NAS system workloads for optimum performance.
• Reliability: Desktop drives aren’t typically designed for the demands of an always-on NAS environment. WD Red Plus hard drives are designed to perform under tough conditions encountered in high-intensity 24x7 multi-user NAS environments.
• RAID Ready: WD Red hard drives are engineered with RAID error recovery control to help reduce failures within multi-bay NAS systems, unlike most desktop drives that are configured for generic use.
• Noise and Vibration Protection: Designed to operate solo, desktop drives typically offer little or no protection from the noise and vibration present in a multi-drive system. WD Red hard drives include Rotation Vibration (RV) sensors that anticipate and proactively counteract disturbances caused by increased vibration often found in multi-bay NAS systems.

Features
• Ideal for Home Offices, Power Users, Small to Medium Businesses and Consumer/Commercial NAS systems
• For RAID-optimized NAS systems with up to 8 bays
• Rated for 180TB/year workload1 and 1M hours MTBF

Specifications
- Capacity: 4TB
- Form Factor: 3.5-Inch
- Connector: SATA
- Compatibility: RAID-optimized NAS systems with up to 8 bays
- Interface: SATA
- Transfer Rate: up to 180MB/s
- Disk Speed (RPM): 5400 RPM
- Recording Technology: CMR
- Cache Size: 256MB
- Warranty: 3-Year Limited Warranty
- Dimensions (L x W x H): 5.787" x 4" x 1.028"
- Weight: 570gms
- Model Number: WD40EFPX
- Operating Temperature: 0°C to 65°C
- Non-Operating Temperature: -40°C to 70°C