Lenovo 4XB7A80535 3.5 5300 960G SSD NHS FOR ST50 REP

Lenovo 4XB7A80535 960GB Non-Hot-Swap SSD Replacement for ThinkSystem ST50

Overview

The Lenovo 4XB7A80535 is a 960GB solid-state drive in the 3.5-inch non-hot-swap (NHS) form factor, sourced as a factory-new genuine replacement component for the Lenovo ThinkSystem ST50 server platform. If your ST50 needs a verified storage replacement that ships in the correct tray/carrier assembly for that chassis, the 4XB7A80535 is the part-number-matched option — no guesswork on compatibility, no adapter required.

The "NHS" designation matters operationally: unlike hot-swap variants, this drive requires a planned maintenance window to install. That is the expected configuration for the ST50, an entry-level tower server not designed for live drive swaps. For environments where scheduled downtime is acceptable — small offices, branch deployments, edge compute nodes — this is not a limitation in practice.

Key Features

• 960GB SSD Capacity: Solid-state storage eliminates the mechanical failure modes (bearing wear, head crashes) that affect spinning drives — relevant in environments with vibration or where unplanned downtime carries real cost. At 960GB, this is a full-capacity working drive, not a cache tier.
• 3.5-Inch Non-Hot-Swap Form Factor: Matched to the ST50's drive bays exactly. Using a mismatched carrier or an aftermarket 2.5-to-3.5 adapter risks seating problems and can void platform support. The 4XB7A80535 ships in the correct physical assembly for direct installation.
• ThinkSystem ST50 Platform Fit: Lenovo's ThinkSystem lineup uses a tightly controlled component qualification process. Genuine replacement parts like this one are validated against the platform's UEFI, storage controller, and thermal envelope — aftermarket alternatives may not appear correctly in Lenovo XClarity or the system's health dashboard.
• Genuine Factory-New Component: Sourced factory-new — no refurbished, open-box, or grey-market supply chain. For a storage replacement in a production server, provenance matters: a drive with unknown prior write cycles is a liability.

Integration and Compatibility

The 4XB7A80535 is specifically called out for the ThinkSystem ST50 platform. Before ordering, confirm your ST50's existing storage configuration and UEFI firmware revision — Lenovo publishes compatibility matrices for its ThinkSystem line that cross-reference drive part numbers against server firmware levels. If you are managing ThinkSystem infrastructure at scale, Lenovo's server storage components catalog covers the broader replacement and upgrade range across the ThinkSystem portfolio.

Physical attributes: the unit weighs 0.85 lb and ships in packaging measuring 7.70 x 10.20 x 3.70 inches — useful for freight planning if ordering in quantity for a rack refresh or multi-site deployment.

Frequently Asked Questions

Q: Is the 4XB7A80535 a hot-swap or non-hot-swap drive?

A: Non-hot-swap (NHS). Installation requires powering down the ThinkSystem ST50. This matches the ST50's standard drive bay configuration.

Q: What server platform is this SSD compatible with?

A: The 4XB7A80535 is designated as a replacement component for the Lenovo ThinkSystem ST50. Verify your specific ST50 configuration and firmware revision against Lenovo's compatibility documentation before installing.

Q: Is this a genuine Lenovo component or an aftermarket part?

A: This is a factory-new, genuine Lenovo component sourced through verified distribution channels — not a refurbished, grey-market, or third-party alternative.

Q: What is the physical form factor of the 4XB7A80535?

A: The drive ships in a 3.5-inch carrier/tray assembly, matching the ST50's native bay configuration. No adapters are required for installation.

Q: What does the "REP" designation in the product name mean?

A: "REP" indicates this is a replacement part — a qualified spare intended for field service replacement of a like component in an existing ThinkSystem ST50 installation.

Karl Wilson

The 4XB7A80535 is a straightforward but important part: a 960GB non-hot-swap SSD in the exact 3.5-inch tray format the ThinkSystem ST50 expects. I see integrators occasionally try to substitute a bare 2.5-inch drive with an adapter — that tends to introduce UEFI detection issues and, in some cases, the drive won't appear in Lenovo XClarity at all. Ordering the platform-matched part number eliminates that class of problem entirely.

Technical Highlights:

• 960GB SSD Capacity: At this capacity, you are covering OS, hypervisor, and light application storage on a single drive — appropriate for the ST50's role as a branch or edge tower server.
• Non-Hot-Swap (NHS) Design: NHS means the drive is fixed-bay, not backplane-addressable. No hot-plug, no surprise removal — which also means the storage controller on the ST50 does not need to manage a hot-swap event queue. Simpler firmware path, fewer failure modes in that subsystem.
• 3.5-Inch Carrier Assembly: The carrier is part of the unit. Weight of 0.85 lb reflects the full assembly, not a bare drive — this is what goes directly into the bay without additional hardware.

Deployment Considerations:

• Plan your maintenance window before ordering: NHS installation on an ST50 means a full power-down. If this is a production node, schedule accordingly and confirm your backup is current before pulling the existing drive.
• Cross-check the ST50's current UEFI firmware level against Lenovo's ThinkSystem compatibility matrix for this drive — firmware mismatches are the most common reason a genuine replacement part shows a health warning post-install.

This part is the right call for ST50 deployments in edge office or light branch server roles where scheduled maintenance is the norm and storage redundancy is handled at the application or backup layer rather than by hot-swap mechanics.