Lenovo 4XB7A17205 3.5 5300 480G SSD NHS FOR ST50

Lenovo 4XB7A17205 480GB 3.5-Inch SATA SSD for ThinkSystem ST50 Server

Overview

The Lenovo 4XB7A17205 is a 480GB 3.5-inch SATA III solid-state drive built specifically for Lenovo ThinkSystem ST50 server deployments. If you're running a single-socket tower server for a branch office, edge compute node, or light-duty surveillance NVR role, this drive delivers the sequential throughput, hardware-level encryption, and validated server compatibility that a generic off-the-shelf consumer SSD cannot guarantee. The 3D TLC NAND architecture and 3,000,000-hour MTBF rating put it firmly in the commercial-grade category — not a desktop part pressed into service, but a drive qualified for the platform it's going into.

Key deployment context: this is a non-hot-swap, SATA III (6 Gb/s) device. Plan around a maintenance window for any physical swap. It is not NVMe — if your workload demands sub-100-microsecond NVMe latency across a PCIe bus, look at a different drive family. For SATA-class server storage where cost per gigabyte, encryption-at-rest compliance, and validated Lenovo compatibility matter more than raw peak throughput, the 4XB7A17205 is the right match.

Key Features

• 480GB 3D TLC NAND Capacity: enough headroom for OS, application stack, and working data on a branch server or edge node without requiring a secondary drive — keeps the ST50's bay count available for expansion rather than splitting capacity across multiple smaller units.
• 540 MB/s Sequential Read / 410 MB/s Sequential Write: read-heavy workloads like surveillance video indexing, log aggregation, or OS boot complete meaningfully faster than spinning rust. The write figure is honest — sequential writes at 410 MB/s won't bottleneck typical server-side logging or moderate-write database operations.
• 85,000 IOPS Random Read / 36,000 IOPS Random Write (4KB): random-read performance is where SSDs earn their place in server environments. At 85K read IOPS, query-heavy workloads, VMS index lookups, and concurrent-user access patterns all see lower queue depth and faster response than any HDD at this capacity point.
• Read Latency 175 µs / Write Latency 100 µs: these figures matter in transactional workloads where many small operations stack up. 175-microsecond read latency is consistent with enterprise-class SATA SSD behavior — not NVMe territory, but a predictable floor for time-sensitive operations.
• 256-bit AES Hardware Encryption: encryption is handled in the drive controller, not the CPU — zero performance penalty for workloads that require data-at-rest compliance (HIPAA, PCI-DSS, internal security policy). If the drive is removed from the server, the data is not readable without the encryption key.
• 3,000,000-Hour MTBF: a 3-million-hour MTBF rating reflects the engineering margin built into this drive for continuous server operation. That translates to lower unplanned failure probability over a multi-year deployment compared to drives rated at 1–1.5M hours.
• SATA III 6 Gb/s Interface: backward-compatible with SATA II ports, but runs at full 6 Gb/s on the ST50's native SATA III controller — no adapter or firmware change required. Plug-and-play replacement for an existing HDD in the same bay.
• 2.5W Read Power Consumption: low idle and active power draw reduces thermal load in a tower chassis with limited airflow. In an always-on server running 24/7, power efficiency compounds across months of operation.

Integration and Compatibility

The 4XB7A17205 ships in a 3.5-inch NHS (Non-Hot-Swap) form factor, qualified for the Lenovo ThinkSystem ST50 server. If you are integrating this into a server or workstation storage build, verify your ST50's firmware and HDD backplane support NHS SSDs — Lenovo's compatibility matrix for the ST50 lists this part explicitly. It will not function as a hot-swap drive; the server must be powered down for installation.

The Serial ATA III interface makes this drive compatible with any standard SATA III HBA or onboard controller, but optimal support — including predictive failure monitoring via SMART passthrough and Lenovo's XClarity management toolchain — requires the ST50 platform. Using this drive outside of a validated Lenovo server chassis is possible but falls outside the tested configuration. For NAS or external storage enclosures, confirm SATA SSD compatibility with the enclosure vendor before ordering.

No NVMe support means this drive will not appear in systems expecting an M.2 or U.2 NVMe device. For planning purposes, pair this with a storage capacity and retention planning guide if you're sizing the ST50 for a specific data retention requirement.

Frequently Asked Questions

Q: Is the Lenovo 4XB7A17205 a hot-swap drive?

A: No. The 4XB7A17205 is a non-hot-swap (NHS) drive. The server must be powered down before installing or removing this SSD. Plan for a maintenance window when deploying or replacing it.

Q: Does this drive support hardware encryption?

A: Yes. The 4XB7A17205 includes 256-bit AES hardware encryption, handled at the drive controller level with no CPU overhead. Data at rest is encrypted regardless of what the host OS is doing.

Q: What is the interface type — is it NVMe or SATA?

A: This is a Serial ATA III (SATA III) drive running at 6 Gb/s. It does not support NVMe. It is not compatible with M.2 or PCIe NVMe slots.

Q: What server is the 4XB7A17205 designed for?

A: This drive is validated for the Lenovo ThinkSystem ST50 tower server. Using it in other Lenovo server platforms or third-party servers is outside the tested configuration — verify compatibility with Lenovo's official parts compatibility matrix for your specific platform.

Q: What is the rated MTBF for this SSD?

A: The 4XB7A17205 carries a 3,000,000-hour Mean Time Between Failures (MTBF) rating, reflecting its commercial-grade design for continuous server operation.

Q: What are the physical dimensions and weight of this drive?

A: The drive measures 10.20 x 7.80 x 3.70 inches and weighs 0.90 lb.

Jerry Tildsen

The spec I keep coming back to on the 4XB7A17205 is the 256-bit AES hardware encryption combined with that 3,000,000-hour MTBF — it's the pairing that makes this a credible pick for a branch server where you can't afford either a compliance gap or an unplanned failure. If you're deploying ST50 towers at remote sites with limited IT staff onsite, both of those numbers matter more than sequential throughput bragging rights.

Technical Highlights:

• 85,000 IOPS Random Read: this is the figure that separates this drive from a HDD in real-world server use — index lookups, concurrent user sessions, and VMS metadata queries all hit the random-read path, not sequential. 85K IOPS keeps the queue depth low even under multi-process load.
• 175 µs Read Latency: SATA SSD latency is bounded by the protocol overhead floor, but 175 microseconds is a consistent, predictable floor — important when you're relying on this drive for transactional workloads and need to size timeouts accurately in your application stack.
• 2.5W Active Read Power: in a tower server running 24/7 at a branch or edge site, this keeps the ST50's thermal envelope manageable without requiring additional cooling infrastructure — relevant when the server is sitting in a wiring closet without dedicated airflow.

Deployment Considerations:

• This is a non-hot-swap drive — any physical replacement requires a full server shutdown. Factor that into your maintenance SLA and make sure field technicians know before they arrive onsite. Attempting a live swap will not work and risks controller damage on the backplane.
• This drive is not NVMe — if a future workload on this ST50 requires sub-50-microsecond latency or you're running a database engine that benefits from PCIe bandwidth, this SATA SSD will be the bottleneck. Size accordingly now or plan a migration path.

Best fit: an ST50 deployed as a branch surveillance server or edge application node where data-at-rest compliance is required, the IT team visits the site on a scheduled basis rather than reactively, and SATA III throughput is adequate for the workload — this is not a data center tier-1 drive, but for that ST50-specific use case it hits every required spec.