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Lenovo lists 4XB7A13623 (feature code B49C) as the ThinkSystem 2.5-inch Intel S4510 3.84TB Entry SATA 6Gb hot-swap SSD. The drive uses Intel 64-layer 3D NAND TLC flash and a 6 Gbps SATA interface, and Lenovo points the S4510 at boot, web serving, lower data rate operational databases and analytics.
The 3.84TB model is rated for 97,000 random read IOPS and 32,000 random write IOPS at 4 KB, with 560 MBps sequential read and 510 MBps sequential write. Sequential latency is 36 microseconds reading and 37 writing, and random latency is 103 microseconds reading and 59 writing. Endurance is 1.9 drive writes per day, which Lenovo equates to 13.1 PB written, and typical active-write power is 3.6 W.
The next size down in the 2.5-inch S4510 range is 4XB7A13622 (1.92TB, B49B), and the top of the range is 4XB7A13624 (7.68TB, B96X), which Lenovo rates at 26.2 PB written. The MTBF is 2,000,000 hours across the series.
Find more drives in the Lenovo SSDs. A 3.84TB SATA alternative is the ThinkSystem 2.5-inch 5400 PRO 3.84TB Read Intensive SATA SSD, 4XB7A82262.
| Option part number | 4XB7A13623 |
| Feature code | B49C |
| Description | ThinkSystem 2.5" Intel S4510 3.84TB Entry SATA 6Gb Hot Swap SSD |
| Capacity | 3.84TB |
| Interface | 6 Gbps SATA |
| Form factor | 2.5-inch hot-swap |
| Endurance | 1.9 DWPD, 13.1 PB written |
| 4 KB random IOPS | 97,000 read / 32,000 write |
| Sequential rate | 560 MBps read / 510 MBps write |
| Typical active write power | 3.6 W |
| MTBF | 2,000,000 hours |