HPE MSA 3.84TB SAS 12G Small Form Factor Heavy Read SSD Array 2.5in. This product is the Hewlett Packard Enterprise R3R30A 3.84TB SAS solid state drive designed for enterprise storage arrays such as HPE MSA. It is a 2.5" SFF internal SSD optimized for read-intensive workloads, offering 3.84TB (3840 GB) capacity, 12G SAS connectivity (product naming indicates SAS), and is offered as an MSA-certified replacement/option for HPE storage systems. Typical uses include server and array storage expansion, high-performance caching, and read-heavy enterprise applications. ProductDatabase entries reference compatibility with HPE MSA storage and list multiple manufacturer notations (HPE/Hewlett Packard Enterprise) and related part numbers (R3R30A / P19558-001 replacement).