capacity-optimized enterprise hard drive for bulk-data applications 1tb to 8tb1, 3.5-inch enterprise drive with industry-leading conventional magnetic recording (cmr) technology advanced write caching feature enables up to 100% performance improvement in random writes over last-generation drive 12gb/s sas and sata 6gb/s interfaces in industry-standard formats (512n, 512e and 4kn) for easy integration into replicated and raid multi-drive storage servers and systems state-of-the-art cache, on-the-fly error-correction algorithms, super parity and end-to end sas-based data integrity for accurate data storage industry-leading rotational vibration design helps ensure consistent performance in dense multi-drive systems engineered for 24x7 workloads of 550tb/yr robust performance with dual processors, ramp load technology, top-cover-attached motor and humidity sensor for optimum performance in all chassis on-demand powerbalance feature available for lower power/performance in random read/write environments seagate secure self-encrypting drive featuring instant secure erase for cost-saving drive retirement and secure data-at-rest protection seagate seatools diagnostic software to provide drive self-tests ensuring no unnecessary downtime and maximizing tco best-fit applications hyperscale applications/cloud data centers with replicated storage massive scale-out data centers and big data analytics high-capacity density raid storage mainstream enterprise external storage (san, nas, das) distributed file systems, including hadoop and ceph enterprise backup and restore d2d, virtual tape capacity 4tb