Lenovo 4XB7A77457 ST50 V2 2.5 5300 480GB 6GB NHS SSD

Lenovo 4XB7A77457 480GB 2.5-Inch Server SSD for ST50 V2

Overview

The Lenovo 4XB7A77457 is a 480GB 2.5-inch solid-state drive designed as a factory-qualified storage option for Lenovo ST50 V2 tower servers. Built on 3D TLC NAND flash, it targets read-intensive workloads — OS boot volumes, application binaries, database read caches, and light transactional storage — where consistent low-latency access matters more than raw write endurance. At 7mm height and standard 2.5-inch footprint (70mm × 100mm), it installs in any standard 2.5-inch bay without adapters.

Key Features

• 480GB 3D TLC NAND: Provides enough capacity for OS + application tier on a single drive, reducing the need for a separate boot device. 3D TLC stacks cells vertically to improve density and extend write endurance compared to planar TLC — practical for workloads that are predominantly read-heavy.
• 85,000 IOPS Random Read (4KB): At 85K read IOPS, this drive handles the kind of small-block random I/O that hammers spinning disks — database index lookups, VM boot storms, or frequent config-file reads — without queuing delays. That's the spec to compare when evaluating whether flash is justified over a nearline HDD for a given workload.
• 36,000 IOPS Random Write (4KB): Write performance at 36K IOPS is appropriate for mixed read/write OS workloads. For write-intensive databases or logging applications generating sustained write streams, a higher-endurance SSD with greater write IOPS would be a better fit.
• 175µs Read Latency / 100µs Write Latency: Sub-200µs access times eliminate the rotational latency penalty of HDDs entirely. For any workload where application responsiveness is measured in milliseconds, this is the floor you need — spinning media typically adds 5–10ms per access.
• 3,000,000-Hour MTBF: A 3-million-hour mean time between failures rating is a standard enterprise-class reliability benchmark. It does not guarantee individual drive longevity but reflects the statistical reliability target for data center use — appropriate for server deployments running 24/7.
• S.M.A.R.T. Support: Full S.M.A.R.T. monitoring lets server management tools (including Lenovo XClarity) track drive health, wear indicators, and reallocated sector counts proactively — so you replace the drive on your schedule, not the drive's.
• Low Power Draw — 2.5W Read / 3.1W Write: Under 3.1W at peak write keeps this drive well within the power envelope of the ST50 V2's storage bay. For a tower server without active per-bay cooling, low thermal output also means less heat accumulation in a dense bay layout.
• Non-Hot-Swap Design: This drive does not support hot-swap. The ST50 V2 is a tower-class server, not a rack chassis with hot-swap backplanes — plan maintenance windows for any drive replacement. This is expected for the platform, not a limitation unique to this SKU.

Integration and Compatibility

The 4XB7A77457 is factory-qualified for Lenovo ThinkSystem ST50 V2 tower servers and carries the Lenovo part number for that platform. Deploying a manufacturer-qualified drive — rather than a generic SSD — ensures firmware compatibility, server management visibility through Lenovo XClarity Administrator, and support alignment with the server warranty. For other Lenovo server platforms or mixed-vendor environments, verify platform compatibility against Lenovo's ServerProven list before ordering.

At 480GB, this drive fits comfortably as a server storage OS and application volume. If your workload requires larger capacity or higher write endurance, the Lenovo server storage lineup includes higher-capacity and higher-endurance variants in the same 2.5-inch form factor.

Frequently Asked Questions

Q: Is the Lenovo 4XB7A77457 a hot-swap drive?

A: No. The 4XB7A77457 does not support hot-swap. The Lenovo ST50 V2 is a tower server platform without a hot-swap backplane, so drive replacement requires a planned maintenance window with the server powered down.

Q: What NAND type does the 4XB7A77457 use?

A: It uses 3D TLC NAND flash. 3D TLC offers a good balance of density and endurance for read-intensive server workloads such as OS boot volumes, application tier storage, and database read caches.

Q: What are the random read and write IOPS for the 4XB7A77457?

A: The drive is rated at 85,000 IOPS random read and 36,000 IOPS random write at 4KB block size — suitable for mixed OS and application workloads on the ST50 V2 platform.

Q: What is the MTBF rating for the 4XB7A77457?

A: Lenovo rates this drive at 3,000,000 hours MTBF, which is a standard enterprise-class reliability target appropriate for 24/7 server operation.

Q: Does the 4XB7A77457 support S.M.A.R.T. monitoring?

A: Yes. The drive supports S.M.A.R.T., enabling health monitoring through compatible server management tools including Lenovo XClarity Administrator.

Q: What are the physical dimensions of the 4XB7A77457?

A: The drive measures 70mm wide × 100mm deep × 7mm high — a standard 2.5-inch, 7mm-height form factor that fits any compatible 2.5-inch drive bay without adapters.

Ted Perry

The 4XB7A77457 is a straightforward platform-qualified SSD — not a high-endurance write-optimized drive, but the right pick for ST50 V2 deployments where you need a reliable, low-latency OS and application volume without spinning media. The 85,000 read IOPS spec is the number I'd hang the deployment decision on: that's the threshold where small-block random reads stop being a bottleneck for typical server application workloads.

Technical Highlights:

• 175µs Read Latency: Sub-200µs access eliminates rotational latency entirely — the single biggest responsiveness improvement when replacing an HDD boot drive in a tower server.
• 3M-Hour MTBF: Enterprise-class reliability rating supports continuous 24/7 operation; pairs well with S.M.A.R.T. monitoring to catch wear before failure.
• 2.5W / 3.1W Power Draw: Stays well under the ST50 V2 storage bay thermal envelope — important in a tower with passive bay cooling and limited airflow compared to rack chassis.

Deployment Considerations:

• This is a non-hot-swap drive in a non-hot-swap platform — that's consistent and expected, but plan storage maintenance into scheduled downtime windows accordingly.
• 36,000 write IOPS at 4KB is adequate for OS and application workloads but will become a bottleneck on write-heavy transactional databases or high-volume logging. Verify your write I/O profile before committing this drive to a write-intensive role.

Best fit: Lenovo ST50 V2 tower server deployments needing a platform-qualified, low-latency SSD for OS boot, application binaries, or a read-heavy database tier — particularly in environments where S.M.A.R.T.-integrated server management is already in use via Lenovo XClarity.