Axiom T500 2.5 400GB SATA III MLC Hot-Swap Enterprise SSD (IBM Supported) Sustained Sequential Read: Up to 500 MB/s Sustained Sequential Write: Up to 460 MB/s 4KB Random Read: Up to 75,000 IOPS 4KB Random Write: Up to 36,000 IOPS Max Sequential Read: 500 MBps Max Sequential Write: 460 MBps MTBF: 2,000,000 hours Read Latency: 50 µs (TYP)