Lenovo 4XB7A77458 ST50 V2 2.5 5300 960GB 6GB NHS SSD

Lenovo 4XB7A77458 ST50 V2 960GB 2.5-Inch Enterprise SATA SSD

Overview

The Lenovo 4XB7A77458 is a 960GB 2.5-inch enterprise SATA solid-state drive built for the Lenovo ThinkSystem ST50 V2 tower server. If you're running a workstation-class server for light virtualization, edge compute, or a dedicated network video recorder workload, this drive delivers the IOPS headroom and endurance rating you need without the cost premium of NVMe. The 3D TLC NAND architecture gives you a sensible balance between write endurance and cost at the 960GB capacity point — making it a practical choice for OS-plus-application storage in space-constrained server configurations.

Designed specifically as a component for server and workstation use, this is not a desktop or consumer drive rebranded for enterprise. The 3,000,000-hour MTBF rating and S.M.A.R.T. monitoring support reflect a drive engineered for always-on environments where unplanned downtime is not acceptable.

Key Features

• 960GB 3D TLC NAND: Enough capacity to host an OS, application stack, and working dataset on a single drive — relevant when your ST50 V2 bay count is limited and you'd rather not split OS and data across multiple small drives. 3D TLC strikes a better cost-per-GB balance than MLC while still delivering enterprise-class endurance figures.
• 95,000 IOPS Sequential Read (4KB): At 95K random read IOPS, the drive handles the mixed read-heavy workloads typical of VMS database lookups, video index reads, and light database queries without creating a storage bottleneck. That's roughly 7–10x the random read throughput of a 7,200 RPM spinning disk.
• 35,000 IOPS Random Write (4KB): Write performance at 35K IOPS is sufficient for continuous ingest tasks — event logging, video segment writes, or application state — without write amplification stalling the server under sustained load.
• 175µs Read / 100µs Write Latency: Sub-millisecond latency on both reads and writes means the server CPU is rarely waiting on storage. For a server storage configuration running a video management system, this translates directly to snappier playback seeks and faster alarm-triggered clip retrieval.
• 3,000,000-Hour MTBF: A 3-million-hour mean time between failures rating puts this drive in the same reliability tier as other enterprise SATA SSDs designed for 24/7 operation. Plan on years of continuous use before this becomes a replacement concern — though S.M.A.R.T. monitoring should still be active so you catch any wear-indicator degradation early.
• S.M.A.R.T. Monitoring: Built-in S.M.A.R.T. support lets your server management software (or a simple smartmontools check) track drive health, wear leveling status, and reallocated sector counts. In a server running unattended, this is your early warning system before a drive event becomes a data event.
• Low Power Draw — 2.8W Read / 3.4W Write: Drawing under 3.5W even under write load, this drive generates minimal heat and draws negligible power from the ST50 V2's internal power budget. That's relevant in a tower server that may not have active drive-bay cooling — thermal runaway from a high-draw SSD is not a concern here.
• 2.5-Inch / 7mm Z-Height: At 70mm × 100mm × 7mm, the drive fits standard 2.5-inch bays directly. The 7mm z-height is the slim form factor — confirm your ST50 V2 bay supports this height or that a spacer is included, particularly if replacing a 9.5mm drive.

Integration and Compatibility

The 4XB7A77458 is validated for the Lenovo ThinkSystem ST50 V2 server platform. As a non-hot-swap drive, installation requires powering down the server — budget accordingly during maintenance windows. This is not a field-swappable drive in the traditional enterprise rack sense; the ST50 V2 is a tower platform where planned maintenance is the norm rather than live swap.

The drive is not hot-swap capable, so it is not suited for environments that require zero-downtime storage maintenance. If continuous availability is a hard requirement, pair the ST50 V2 with a RAID controller and a second matching drive to build redundancy at the array level rather than the individual drive level. For environments running video management software on this platform, configure RAID 1 at minimum for the OS/application volume.

S.M.A.R.T. data is accessible through standard SATA management interfaces, compatible with Linux smartmontools, Windows Storage Spaces, and most server BIOS health monitoring utilities. This makes integration into existing infrastructure monitoring straightforward without requiring vendor-specific tools.

Frequently Asked Questions

Q: Is the Lenovo 4XB7A77458 a hot-swap drive?

A: No. The 4XB7A77458 does not support hot-swap. The server must be powered down before installing or removing this drive. Plan maintenance windows accordingly.

Q: What server platform is the 4XB7A77458 designed for?

A: This drive is validated for the Lenovo ThinkSystem ST50 V2 server and workstation platform. Confirm compatibility with your specific ST50 V2 configuration before ordering.

Q: What NAND type does the 4XB7A77458 use?

A: The drive uses 3D TLC (Triple-Level Cell) NAND flash, which provides a practical balance of write endurance and cost-per-GB for enterprise SATA workloads.

Q: What are the random IOPS figures for the 4XB7A77458?

A: Random read (4KB) is 95,000 IOPS and random write (4KB) is 35,000 IOPS. Read latency is 175 microseconds and write latency is 100 microseconds.

Q: Does the 4XB7A77458 support S.M.A.R.T. monitoring?

A: Yes. S.M.A.R.T. is supported, allowing standard server health monitoring tools to track drive wear, reallocated sectors, and overall health status during continuous operation.

Q: What is the z-height of the 4XB7A77458?

A: The drive measures 7mm in height (z-height), which is the slim 2.5-inch form factor. Verify your ST50 V2 drive bay accommodates 7mm drives, particularly if replacing an older 9.5mm device.

Ted Perry

When I look at the 4XB7A77458, the number that stands out is the 3,000,000-hour MTBF combined with the 2.8W read power draw — this is a drive built to run continuously in a tower server that likely lives in a utility closet or back office with minimal active cooling. In the ST50 V2 deployments I've seen, that thermal profile matters more than most buyers realize up front.

Technical Highlights:

• 95,000 IOPS Read Performance: At 95K 4KB random read IOPS, this drive handles the metadata-heavy read patterns of a VMS index or light database without creating a storage bottleneck — roughly an order of magnitude faster than the spinning disk it likely replaces.
• Sub-Millisecond Latency: 175µs read and 100µs write latency means storage is never the slow path in a server handling concurrent video requests or alarm lookups. For an ST50 V2 running a 16–32 camera VMS, that responsiveness is directly user-visible during playback seeks.
• 7mm Slim Form Factor: The 70mm × 100mm × 7mm dimensions fit standard 2.5-inch bays, but the 7mm z-height is worth double-checking against the specific ST50 V2 bay configuration — some bay adapters expect a 9.5mm drive and a spacer may be needed.

Deployment Considerations:

• No hot-swap support means any drive maintenance requires a planned server shutdown. In a single-drive OS configuration, pair with a RAID 1 mirror using a second 4XB7A77458 and a compatible controller to avoid single points of failure without hot-swap capability.
• S.M.A.R.T. monitoring is essential here — with 3D TLC NAND under continuous write load (video ingest, logging), configure smartd or your server's BIOS health alerts to catch wear-indicator thresholds before they become failures. Don't assume the MTBF rating removes the need for active monitoring.

This drive is the right call for an ST50 V2 deployed as a dedicated edge VMS server or small-office workstation replacement — where the combination of low power draw, adequate IOPS, and long MTBF matters more than raw throughput or hot-swap flexibility.