Western Digital 4TB Red Plus NAS Hard Drive - 5400 RPM, 128MB Cache, SATA 6Gb/s 3.5" | WD40EFZZ

Western Digital Red Plus NAS Hard Drives are built for always-on NAS systems in home offices, small businesses, and creator studios, delivering reliable storage, backup, and file sharing in multi-bay RAID setups. 4TB capacity with 128MB cache. 5400 RPM with transfer rates up to 180MB/s. CMR (Conventional Magnetic Recording) technology. Support for RAID-optimized NAS systems with up to 8 bays. Supports up to 180 TB/year workload rate. Designed for 24/7 operation with 1 million hours MTBF. Compatibility-tested with leading NAS brands. 3-year limited warranty. Tuned for NAS with NASware™ Western Digital's exclusive NASware™ technology adjusts drive settings to match the demands of NAS workloads, helping improve both performance and reliability. RAID error recovery control also helps reduce drive dropouts in multi-bay arrays, something standard desktop drives aren't designed to handle. Built for Multi-Bay Environments Multiple drives spinning side by side create vibration that can shorten drive life and slow performance over time. WD Red Plus drives use dual-plane balance control to keep vibration and noise down, and they run cooler on less power, making them a good fit for compact NAS enclosures.