4TB Storage Capacity , 3.5" Form Factor , SATA III 6 Gb/s Interface , 256MB Cache , 7200 rpm , Up to 243 MB/s Sustained Transfer Rate , 2.0 Million Hours MTTF , 550TB Yearly Workload Rating

8TB Storage Capacity , 3.5" Form Factor , SATA III 6 Gb/s Interface , 256MB Cache , 7200 rpm , Up to 248 MB/s Sustained Transfer Rate , 2.5 Million Hours MTTF , 550TB Yearly Workload Rating

12TB Storage Capacity , 3.5" Form Factor , SATA III 6 Gb/s Interface , 256MB Cache , 7200 rpm , Up to 242 MB/s Sustained Transfer Rate , 2.5 Million Hours MTTF , 550TB Yearly Workload Rating

16TB Storage Capacity , 3.5" Form Factor , SATA III 6 Gb/s Interface , 512MB Cache , 7200 rpm , Up to 262 MB/s Sustained Transfer Rate , 2.5 Million Hours MTTF , 550TB Yearly Workload Rating

18TB Storage Capacity , 3.5" Form Factor , SATA III 6 Gb/s Interface , 512MB Cache , 7200 rpm , Up to 268 MB/s Sustained Transfer Rate , 2.5 Million Hours MTTF , 550TB Yearly Workload Rating

8TB Storage Capacity , 3.5" Form Factor , SAS-3 12 Gb/s Interface , 256MB Cache , 7200 rpm , Up to 230 MB/s Sustained Transfer Rate , 2.5 Million Hours MTBF , 550TB /jo Yearly Workload Rating

12TB Storage Capacity , 3.5" Form Factor , SAS-3 12 Gb/s Interface , 256MB Cache , 7200 rpm , Up to 242 MB/s Sustained Transfer Rate , 2.5 Million Hours MTBF , 550TB /jo Yearly Workload Rating

16TB Storage Capacity , 3.5" Form Factor , SAS-3 12 Gb/s Interface , 512MB Cache , 7200 rpm , Up to 262 MB/s Sustained Transfer Rate , 2.5 Million Hours MTBF , 550TB /jo Yearly Workload Rating