Lenovo 4XB7A77448 ST50 V2 3.5 6TB 7.2K 6GB NHS HDD

Lenovo 4XB7A77448 3.5" 6TB 7.2K Non-Hot-Swap Server HDD for ST50 V2

Overview

The Lenovo 4XB7A77448 is a 6TB, 7,200 RPM, 3.5-inch non-hot-swap (NHS) hard drive qualified for the Lenovo ST50 V2 tower server platform. If you're expanding storage capacity in an ST50 V2 deployed as an on-premises NVR host, edge compute node, or small business server, this is the factory-qualified drive that ships directly from the Lenovo supply chain — no guesswork about firmware compatibility or mechanical fitment. The "NHS" designation in the part name is the key purchasing detail: this drive installs in a fixed bay and requires the server to be powered down for a drive swap, which is standard for a tower-class platform like the ST50 V2. Enterprise buyers running 24/7 uptime-critical workloads should confirm whether their deployment tolerates planned maintenance windows before ordering this SKU versus a hot-swap variant.

Key Features

• 6TB Raw Capacity: At 6TB per spindle, a single 4XB7A77448 provides meaningful storage headroom for surveillance archives, file shares, or database workloads. In a video surveillance context running H.265 streams at typical bitrates, 6TB can hold several weeks of continuous footage from multiple cameras — enough to satisfy most local retention policies without immediately requiring additional drives.
• 7,200 RPM Spindle Speed: The 7.2K RPM class delivers sustained sequential throughput appropriate for multi-stream write workloads. For NVR-style applications writing simultaneous camera streams, 7,200 RPM drives outperform 5,400 RPM SMR-based alternatives in sustained write scenarios — a practical consideration when your storage backend needs to absorb high-bitrate video without buffer overflows.
• 6 Gb/s SATA Interface: The 6 Gigabit-per-second SATA interface saturates the mechanical drive's throughput ceiling — you won't be bottlenecked by the interface even under sequential workloads. The ST50 V2's onboard SATA controller operates at this speed natively, so no adapter or controller upgrade is required.
• 3.5-Inch Form Factor: The 3.5-inch drive format fits the ST50 V2's standard drive bays directly and supports higher areal density per unit cost compared to 2.5-inch alternatives — relevant when you're maximizing capacity in a fixed number of bays.
• Non-Hot-Swap (NHS) Configuration: The NHS designation means this drive mounts without a hot-swap sled or backplane carrier, keeping the unit cost lower than a hot-swap equivalent. It's the right choice for deployments where the server can be taken offline for storage maintenance — typical for tower servers in office, retail, or small-branch environments.
• Lenovo Platform Qualification: This drive is part number-qualified for the ST50 V2 platform. Using platform-qualified storage avoids the firmware and compatibility surprises that can occur with generic OEM drives, particularly relevant for warranty and support scenarios.
• Single-Unit Pack: Ships as a single drive (1 pc), allowing you to add capacity incrementally to the ST50 V2 as workload demands grow — you're not forced into multi-pack quantities when you need one additional bay filled.

Integration & Compatibility

The 4XB7A77448 is designed and qualified specifically for the Lenovo ST50 V2 tower server. Before ordering, confirm the number of available 3.5-inch bays in your ST50 V2 configuration and whether the system's storage controller is configured for AHCI or RAID mode — the latter affects how individual drives present to the operating system and your NVR or VMS software. If your surveillance or data workload requires drive replacement without downtime, evaluate hot-swap variants within the Lenovo ST50 V2 accessory catalog instead. For broader server storage planning, factor in controller channel count and RAID rebuild times when populating multiple bays with 6TB spindles — rebuild times on large-capacity drives can extend several hours under full load.

Frequently Asked Questions

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