Western Digita WD40EFRXl 4TB WD Red NAS Internal HDD

Western Digital WD40EFRX

WD Red NAS Internal Hard Drive - 4 TB - SATA 6Gb/s

The Western Digital WD40EFRX WD Red NAS hard drive is purpose‑built for small to medium business and home users who require reliable 24x7 storage in NAS systems. Offering 4TB of capacity, SATA 6Gb/s interface, and NAS‑tuned firmware, it is engineered to handle continuous operation and demanding workloads in multi‑drive environments.

Part of the Western Digital Red family, this drive ensures compatibility with NAS enclosures up to 8 bays. With features like NASware 3.0 firmware, it delivers enhanced reliability, compatibility, and system integration — ensuring optimized performance for file sharing, backups, and media storage.

Features :

The WD40EFRX combines advanced reliability with NAS‑optimized firmware. Designed to operate in RAID arrays, it includes vibration protection, error recovery control, and energy‑efficient operation. With quiet acoustics and low heat output, it’s ideal for NAS systems that run 24x7.

Advanced Options :

The WD Red series delivers key NAS‑friendly technologies like NASware 3.0 for increased compatibility and error recovery, ensuring data integrity in RAID builds. Tuned for consistent workloads, it supports smooth streaming, backup solutions, and reliable file accessibility for connected devices across your network.