Western Digital WD40EFRX WD Red NAS Hard Drive

• WD 4TB RED NAS HDD 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch
• Built and tested for personal and home NAS systems with up to 8-bays, WD 4TB RED NAS hard drive packs all the punch you need in one powerhouse unit for storing, archiving, and sharing. With WD Red™, you’re ready for what’s next.
• WD Red™ drives designed to effortlessly share content with the devices in your personal or home office environments. NASware 3.0 technology increases your drives’ compatibility with your existing network and devices, TV, stereo, and more. Live in a connected world.
• Designed for personal and home office NAS systems, our unique algorithm balances performance and reliability in NAS and RAID environments. WD Red™ drives are optimized for environments where idle time is available to perform necessary background operations. To ensure optimal performance, always check compatibility with your system. WD Red™ drives may not be suitable for higher workload environments. For ZFS file systems and overall NAS system compatibility, we highly recommend WD Red™ Plus drives, which are optimized for higher workloads