Seagate Exos 7E8 4TB 512n SATA 128MB Cache 3.5-Inch Enterprise Hard Drive (ST4000NM0035)

Best-Fit Applications
Hyperscale applications/cloud data centers
Massive scale-out data centers
OLTP and HPC applications
High-capacity density RAID storage
Mainstream enterprise external storage arrays
Distributed file systems, including Hadoop and Ceph
Enterprise backup and restore—D2D, virtual tape
Centralized surveillance

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High Reliability Drive for servers, storage systems, and business centric NAS systems
Performance Optimized for heavy application usage, supports workloads of up to 550TB per year 10× that of desktop hard drives
Designed for 24×7 storage environments and backed by a 2 million hour MTBF rating
Seagate Enterprise drives are built on 40 years of enterprise workload knowledge and experience