Western Digital 0B47063 Ultrastar DC HA340 Data Center 3.5' SATA HDD - 12TB Read/Wright 150/465 IOPS SATA 267MB/s 7200 RPM WUS721212BLE6L4 Specifications Capacity 12TB Form Factor 3.5-Inch Random Read 150IOPS Random Write 465IOPS Interface SATA Transfer Rate up to 267MB/s Disk Speed (RPM) 7200 RPM Recording Technology CMR Cache Size 512MB Warranty 5-Year Limited Warranty Dimensions (L x W x H) 147mm x 101.6mm x 26.1mm Weight 750gms Model Number WUS721212BLE6L4 Operating Temperature 5°C to 60°C Non-Operating Temperature -40°C to 70°C