Seagate ST2400MM0159 2.4TB 10K SAS HDD

The Seagate ST2400MM0159 is a 2.4TB enterprise hard drive spinning at 10,000 RPM with a 12Gb/s SAS-3 interface housed in a 2.5" small form factor chassis. Those three numbers — 2.4TB, 10K RPM, 12Gb/s — define its position precisely: this is a high-density, latency-optimized spinning drive for servers where SSD economics don't yet pencil out but NL-SAS 7.2K drives are too slow. The 10K spindle yields an average rotational latency of approximately 3ms versus 4.17ms for a 7.2K nearline drive, a 28% improvement that compounds across thousands of IOPS in a busy OLTP workload. The 12Gb/s SAS bus means the interface operates at 2× the bandwidth of SAS-2, ensuring the controller side never throttles the drive.

In practice this drive belongs in PowerEdge servers, HPE ProLiant G9/G10 systems, or any 2.5" SAS-3 backplane array where the workload profile is transactional — ERP databases, virtual machine storage pools, mail server data volumes, or any application characterized by random 4K–64K block I/O rather than large sequential streaming. It is not the right tool for pure bulk storage (where NL-SAS at 8TB+ per drive wins on density and cost) or for maximum IOPS (where SAS SSDs win decisively). It occupies the middle tier: high capacity relative to SAS SSDs, high performance relative to NL-SAS HDDs. System integrators refreshing aging 2.5" SAS-2 arrays will find it a cost-effective capacity upgrade with forward-compatible bandwidth headroom.