WD 18TB Ultrastar DC HC550 SATA HDD 7200 RPM Class SATA 6 Gb/s 512MB Cache 3.5"
- Designed with a workload rating up to 550TB per year, 10X desktop rating (Workload rate is defined as the amount of data transferred to or from the hard drive; Workload Rate is annualized (TB transferred X (8760/ recorded power on hours); Workload Rate will vary depending on your hardware and software components and configurations
- Up to 2.5M hours MTBF
- Five generations of HelioSeal technology (10TB and above)
- Rotational Vibration Safeguard (RVS) technology for vibration protection