Hewlett Packard Enterprise 516816-B21 Hard Disk Drive

Hewlett Packard Enterprise 516816-B21 is a 450GB, 6Gb/s SAS, 15,000 RPM, 3.5-inch LFF hard disk drive with Dual Port (DP) interface and hot-plug/hot-swap support. Part numbers include 516816-B21, 517352-001, and 516832-003, and it is designed for enterprise servers and storage arrays, especially HP ProLiant servers and compatible storage systems. This HDD targets high-speed data access for transactional databases, virtualization, and other performance-critical workloads, delivering consistent throughput and low latency in data center environments. Common replacements include HP 507127-B21, HP 516828-B21, and HP 652589-B21, making it a practical choice for drive replacement, system upgrades, and uptime maintenance in mission-critical environments.