The HP 72GB 10K SAS 2.5 Hot Plug hard drive has SKU and MPN 375861-B21 and is designed for internal use in servers and storage systems. It provides 72GB capacity, 2.5-inch Small Form Factor, rotation speed of 10,000 RPM, and features a SAS interface with Dual Port for reliable high-performance operation. The Hot Plug support allows for drive replacement without requiring system shutdown, making it suitable for mission-critical environments. It is compatible with HPE / HP server platforms and Smart Array controllers. This drive is a standard SAS HDD for older generations of HPE servers and similar compatible systems.