Engineered for small to medium-sized NAS systems, the WD Red Plus WD40EFRX combines 4 TB capacity, 5400RPM IntelliPower, and 64MB cache with CMR technology for dependable performance. Optimized with NASware™ firmware, it ensures smooth compatibility in 24/7 environments and across RAID configurations—backed by Western Digital’s rigorous verification with leading NAS vendors.
With an annual workload rating of up to 180TB, this drive is ready for continuous operation. Features like Native Command Queuing (NCQ), Advanced Format, 3D Active Balance Plus, and vibration control offer efficient, low-noise performance. It’s also rugged: tolerant of 65g shock and a temperature range up to 65°C. Plus, you get peace of mind with a 3-year limited warranty, making the WD40EFRX a reliable and cost-effective choice for NAS and RAID usage.
