Toshiba 4TB N300 SATA III 3.5-Inch Hard Drive - 4 TB, speed 7200 RPM, storage drive buffer size 512 MB, size 3.5", Serial ATA III interface (6.0 Gbit/s) designed for 24/7 NAS operation with support for up to 8 drive bays, featuring rotational vibration sensors, shock sensor, ramp loading technology, and error recovery control for enhanced reliability and performance in multi-drive NAS and RAID systems. Supports a workload rate of up to 180TB per year with a maximum data transfer speed of 281 MB/s, optimized cache allocation for real-time performance, average latency of 4.17 ms, and native command queuing (NCQ). Built to deliver high endurance with 600,000 load/unload cycles and an MTTF of up to 1 million hours. Limited 3-year warranty.