Lenovo 4X97A81453 SR250 V2 3x3.5" HDD + 1x3.5" NVMe Simple-Swap Storage Bay Kit
Overview
The Lenovo 4X97A81453 is a storage bay expansion kit purpose-built for the ThinkSystem SR250 V2 1U rack server, configuring the chassis for three 3.5-inch large-form-factor hard drives alongside one 3.5-inch NVMe simple-swap drive position. If you are deploying an SR250 V2 as a compact on-premises network video recorder or edge storage node and need a mixed spinning-disk-plus-NVMe storage layout, this kit establishes that backplane configuration at the hardware level — you cannot simply install drives without the matching bay infrastructure in place.
At 2.00 lb, the 4X97A81453 is a lightweight mechanical assembly, consistent with a simple-swap backplane bracket and drive-bay cage rather than a populated drive set. Simple-swap (as opposed to hot-swap) means drive changes require the server to be powered down — factor that into your maintenance window planning if uptime is a consideration for your deployment.
Key Features
- Three 3.5" LFF HDD Positions: Large-form-factor bays support high-capacity SATA or SAS spinning drives — the right choice when you need maximum raw storage per dollar for video retention workloads on a budget-conscious 1U platform.
- One 3.5" NVMe Simple-Swap Bay: The dedicated NVMe slot lets you pair a fast NVMe drive for OS or cache duties alongside bulk HDD capacity, keeping the OS volume off the spinning array without consuming a separate M.2 slot or sacrificing an HDD position.
- Simple-Swap Design (2.00 lb assembly): The lightweight 2.00 lb kit installs into the SR250 V2 chassis without complex cabling harnesses, but remember that simple-swap requires a planned downtime window for any drive replacement — this is not a fit for environments demanding zero-downtime storage swaps.
- SR250 V2 Platform Fit: Designed specifically for the ThinkSystem SR250 V2 chassis. Do not assume compatibility with SR250 (V1) or other ThinkSystem 1U models — bay configurations and backplane connectors differ across generations. Verify your chassis generation before ordering.
Integration and Compatibility
This kit integrates with the Lenovo ThinkSystem SR250 V2 server platform. For deployments pairing the SR250 V2 with IP camera systems or NVR software, the mixed HDD+NVMe bay layout supports common configurations: NVMe for the OS/VMS application volume, HDDs for the video retention pool. Consult the Lenovo server catalog and the SR250 V2 product guide to confirm supported drive types, maximum capacities, and RAID controller compatibility before populating bays. Drive selection, RAID configuration, and storage controller options are not included in this kit and must be sourced separately — review a storage capacity planning guide to size retention correctly for your camera count and retention policy.
Frequently Asked Questions
Q: Is the Lenovo 4X97A81453 compatible with the original SR250 (V1) server?
A: This kit is specified for the ThinkSystem SR250 V2. Backplane and bay configurations differ between SR250 V1 and V2 generations. Verify your chassis model number before ordering.
Q: Does the 4X97A81453 include drives?
A: Based on the product designation and weight (2.00 lb), this is a bay/backplane kit — drives are not included. Purchase compatible 3.5" HDD and NVMe drives separately per Lenovo's SR250 V2 compatibility matrix.
Q: What does 'simple-swap' mean for the NVMe and HDD bays in this kit?
A: Simple-swap means drives can be removed and replaced without tools using the tray mechanism, but the server must be powered off before doing so. This is distinct from hot-swap, which allows live drive replacement. Plan maintenance windows accordingly.
Q: How many drives does the 4X97A81453 support in total?
A: The kit configures four drive positions: three 3.5" large-form-factor HDD bays and one 3.5" NVMe bay.
Q: Is this kit suitable for a video surveillance storage server?
A: The 3x HDD + 1x NVMe layout is a reasonable fit for small-to-mid-scale on-premises video retention: the HDD bays hold bulk footage while the NVMe position hosts the OS or VMS application. Capacity and retention hours depend entirely on the drives you populate and your camera/bitrate configuration.
The 4X97A81453 is a specific chassis configuration kit for the ThinkSystem SR250 V2 — not a drive pack, not a controller upgrade. What it gives you is the physical bay infrastructure for three 3.5" spinning drives and one 3.5" NVMe position in a 1U footprint. At 2.00 lb, the assembly itself is strictly mechanical: backplane cage, trays, and connectors, no active components, no drives.
Technical Highlights:
- Mixed Bay Layout (3x HDD + 1x NVMe): Separating the NVMe position from the HDD pool lets you dedicate fast flash to the OS or VMS index volume without cannibalizing bulk storage capacity — a cleaner architecture than running everything off spinning disk.
- Simple-Swap Mechanism: Tool-less tray removal reduces physical swap time, but the server must be offline. If you are sizing this for a deployment that requires continuous recording with no maintenance windows, account for that constraint in your availability design.
- SR250 V2 Platform Specificity: The 2.00 lb kit weight is consistent with a backplane cage assembly sized to the SR250 V2 chassis dimensions. This is not a universal fit — the V2 backplane connectors and bay spacing are generation-specific.
Deployment Considerations:
- Drive population is entirely separate from this kit. Before ordering drives, pull the SR250 V2 product guide and cross-check the supported drive list — not all 3.5" HDDs or NVMe form factors are qualified by Lenovo for this backplane.
- Simple-swap is a cost-versus-uptime trade. For a small branch office DVR replacement or a single-site NVR with a defined nightly maintenance window, it is perfectly adequate. For a 24/7 critical-infrastructure recording node where you need live drive swap, specify a hot-swap-capable platform instead.
This kit fits best in a compact on-premises surveillance storage build — a small-to-mid-site NVR where an integrator needs a defined 1U storage layout, budget matters, and a scheduled maintenance window for drive work is acceptable. It is not the right call for a carrier-grade or mission-critical recording node where downtime for a drive swap is not an option.
