Solid state drive - hot-swap, 240 GB, FF 2.5", SATA 6Gb/s, SSD Endurance 341 TB, Drive Transfer Rate 600 MBps (external), Internal Data Rate 330 MBps (read) / 300 MBps (write), MTBF 2,000,000 hours. The Lenovo PM863a Enterprise Entry SATA solid-state drives (SSDs) are next-generation general-purpose SSDs. They are engineered for greater performance and endurance in a cost-effective design, and to support a broader set of workloads.