Lenovo 4XB7A80525 ST50 3.5 S4510 240GB RI SATA HS REP

Lenovo 4XB7A80525 ST50 3.5-Inch 240GB SATA Hot-Swap SSD

Overview

The Lenovo 4XB7A80525 is a 240GB read-intensive SATA solid-state drive in the 3.5-inch hot-swap form factor, sourced for the Lenovo server storage lineup and specifically qualified for the ThinkSystem ST50 tower platform. If you are managing a small-to-mid-size server environment that runs read-heavy workloads — think OS boot, logging, or lightly accessed application data — the RI (read-intensive) endurance rating on this drive matches that duty cycle without paying for write-optimized endurance you will not consume. As a server-grade SSD, it is designed for continuous operation in a rack or tower environment where a desktop drive would be out of spec.

Key Features

• 3.5-Inch Hot-Swap Carrier: The 4XB7A80525 ships in a tray-ready 3.5-inch hot-swap housing, meaning you can swap the drive without powering down the ST50 — important for environments where planned maintenance windows are tight or non-existent.
• SATA Interface: SATA connectivity keeps the drive compatible with the ST50's onboard storage controller without requiring an additional HBA. If your workload is sequential-read-dominant and you do not need NVMe-class latency, SATA is the correct and more cost-effective choice here.
• 240GB Capacity — Right-Sized for Boot and OS: 240GB is the practical minimum for a dedicated OS or hypervisor boot volume with headroom for logs and swap. It is intentionally not over-specced — pair it with higher-capacity HDDs or SSDs on the remaining bays for data storage via a tiered storage configuration.
• Read-Intensive (RI) Endurance Class: RI drives are rated for workloads where reads substantially outnumber writes — typically 1–3 DWPD (drive writes per day). If your application writes heavily and continuously, an mixed-use (MU) or write-intensive (WI) drive is the correct selection; this drive is not that.
• Lenovo Server Qualification: Factory-validated for the ST50 platform, which means it will appear correctly in Lenovo's XClarity management stack and will not trigger unsupported-drive warnings in the system firmware. Third-party drives in Lenovo servers sometimes surface these alerts — this SKU avoids that friction entirely.
• Compact Physical Footprint at 0.90 lb: At 0.90 lb and 10.20 × 7.80 × 3.80 in (including carrier), the drive-plus-tray assembly is straightforward to handle during installation in the ST50's front-accessible bays.

Integration and Compatibility

The 4XB7A80525 is designed for the ThinkSystem ST50 and related Lenovo ThinkSystem tower servers that accept 3.5-inch hot-swap SATA bays. The Ethernet interface attribute in the distribution data reflects system-level connectivity of the ST50 platform rather than a drive-embedded network port — the drive itself connects via SATA. Verify bay count and backplane type in your ST50 configuration before ordering multiple units; ST50 variants differ in the number of populated versus available hot-swap bays. For storage planning guidance, review the server storage selection guide before finalizing your drive count.

Frequently Asked Questions

Q: What server platform is the Lenovo 4XB7A80525 designed for?

A: The 4XB7A80525 is qualified for the Lenovo ThinkSystem ST50 tower server. Always verify compatibility with your specific ST50 configuration and firmware revision before deploying.

Q: Is this a hot-swap drive?

A: Yes. The 3.5-inch form factor carrier supports hot-swap operation in compatible ST50 bays, allowing replacement without a full system shutdown — provided the ST50's backplane and RAID configuration support it.

Q: What does RI (read-intensive) mean for this drive?

A: RI designates a drive optimized for workloads where reads significantly outnumber writes, such as OS boot volumes, logging, and read-heavy application tiers. It is not suited for continuous heavy-write workloads — those require a mixed-use or write-intensive endurance class.

Q: Does the 4XB7A80525 use SATA or NVMe?

A: SATA. The drive uses a standard SATA interface compatible with the ST50's onboard controller. NVMe variants in the Lenovo lineup carry different part numbers and require an M.2 slot or PCIe-based HBA.

Q: Will this drive trigger unsupported-drive warnings in the ST50 firmware?

A: As a Lenovo-qualified part, the 4XB7A80525 is validated for the ST50 platform and should integrate cleanly with Lenovo XClarity without unsupported-drive alerts, unlike unqualified third-party SSDs.

Eden Phillips

When I spec the 4XB7A80525 into an ST50 build, the decision usually comes down to one question: is this bay handling boot and OS, or is it in the data path for writes? The SATA RI endurance class is the right answer for the former — and the wrong answer if someone tries to run a write-heavy database directly on it without understanding the endurance delta between RI and MU-class drives.

Technical Highlights:

• Hot-Swap 3.5-Inch Carrier: The tray-integrated design means field replacement in a live ST50 — no downtime for a drive swap if the RAID is configured correctly, which matters in small-office environments without a dedicated maintenance window.
• SATA Interface: Keeps the drive on the ST50's native backplane with no additional HBA cost. For read-dominant OS and logging workloads, SATA throughput is not the bottleneck — the application is.
• 240GB RI Capacity: Sized correctly for a dedicated boot/OS volume with log headroom. Pair remaining ST50 bays with higher-capacity spinning or SSD tiers for user data rather than upsizing this boot volume unnecessarily.

Deployment Considerations:

• Confirm your ST50 variant's backplane supports hot-swap at the specific bay position — some ST50 configurations ship with a mix of hot-swap and non-hot-swap bays depending on the ordered chassis option.
• The RI endurance class is a hard constraint: if workload analysis shows write-heavy patterns (continuous database writes, video surveillance recording direct to this volume), spec a mixed-use or write-intensive drive instead — the 4XB7A80525 is not the right tool for that duty cycle.

This drive is the correct choice for an ST50 deployed as a small-office file server or application host where the OS boot volume needs to be solid-state, reliable, and firmware-validated — not a performance-tier NVMe build where you are chasing IOPS.