Seagate Enterprise Capacity 3.5” HDD 4TB 7200 RPM 512n SAS 12Gb/s 128MB Cache Internal Hard Drive ST4000NM0025

– 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, – 1TB to 8TB*1, 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, – Distributed file systems, including Hadoop and Ceph, – Engineered for 24×7 workloads of 550TB/yr, – Enterprise backup and restore – D2D, virtual tape, – High-capacity density RAID storage, – Hyperscale applications/cloud data centers with replicated storage, – Industry-leading rotational vibration design helps ensure consistent performance in dense multi-drive systems, – Mainstream enterprise external storage (SAN, NAS, DAS), – Massive scale-out data centers and big data analytics, – On-demand PowerBalance feature available for lower power/performance in random read/write environments, – Robust performance with dual processors, ramp load technology, top-cover-attached motor and humidity sensor for optimum performance in all chassis, – Seagate SeaTools diagnostic software to provide drive self-tests ensuring no unnecessary downtime and maximizing TCO, – Seagate Secure Self-Encrypting Drive featuring Instant Secure Erase for cost-saving drive retirement and secure data-at-rest protection*2, – 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, *1. Seagate recommends validating your configuaration with your HBA/RAID controller manufacturer to ensure full capacity capabilities., *2. Self-Encrypting Drives (SED) are not available in all models or countries. May require TCG-compliant host or controller support., Best-Fit Applications, Capacity-Optimized Enterprise Hard Drive for Bulk-Data Applications