WD Red Plus 2TB SATA III 3.5" Internal NAS HDD, 128MB Cache, 5400rpm Speed, Up to 175 MB/s Sustained Transfer Rate, 1 Million Hours MTBF, NASware 3.0 Technology | WD20EFZX

Built with the power to handle small- to medium-sized business NAS environments and increased workloads to SoHo (Small Office and Home Office) customers, the 2TB Red Plus SATA III 3.5" Internal NAS HDD from WD is made for archiving and sharing, as well as RAID array rebuilding on systems using ZFS and other file systems in NAS arrays with 1-8 bays. This 2TB drive operates using a SATA III 6 Gb/s interface, and a 128MB cache, all of which help to ensure uninterrupted data transfers with a sustained rate of up to 175 MB/s. This drive also features high levels of reliability, with 600,000 load/unload cycles, <1 in 10¹⁴ non-recoverable read errors per bits read, error recovery controls, and 1 million hours MTBF. Also built into this drive are noise and vibration protection and WD's NASware 3.0 helps increase system compatibility, allowing WD Red Plus drives to be more easily integrated with your existing network infrastructure.