Lenovo 4XB7A17072 S4520 240GB 2.5" SATA Enterprise SSD

Lenovo S4520 240GB SATA Enterprise SSD

The Lenovo S4520 is a 240GB 2.5-inch solid-state drive built for read-intensive server workloads. It connects via a SATA 6.0Gb/s interface and supports hot-swap installation in compatible bays. Designed for enterprise environments, it uses 144-layer Intel 3D NAND TLC flash memory to deliver consistent performance for boot, logging and caching tasks.

Upgrade from slower mechanical drives

Replacing 2.5-inch hard drives with this SSD removes mechanical latency and raises sustained read throughput to 470 MB/s. The jump is worth it when workloads demand higher random-read IOPS and lower power draw in a hot-swap chassis. It is not suited for write-heavy databases or mixed-use volumes that exceed its read-optimised endurance profile.

240GB capacity with 2.5 DWPD and 1024 TB TBW

The drive writes up to 600GB per day across its warrantied lifespan, totalling 1024 TB of data written. That headroom covers typical boot, web-tier and read-cache datasets with room to spare. Workloads that sustain heavy sequential writes or require larger active datasets will exhaust the endurance budget before the capacity limit becomes the constraint.