Lenovo 4XH7B03849 SR650 V4 8X3.5IN Sas/sata +4ANYBAY BP KIT

Lenovo 4XH7B03849 SR650 V4 8x3.5" SAS/SATA + 4-AnyBay Backplane Kit

Overview

The Lenovo 4XH7B03849 is a drive backplane upgrade kit designed for the ThinkSystem SR650 V4 rack server, expanding its raw storage bay count with eight 3.5-inch SAS/SATA drive slots plus four AnyBay bays — the AnyBay positions accept SAS, SATA, or NVMe U.2 drives, giving storage architects the flexibility to mix spinning media with flash tiers without reconfiguring the chassis. At 10 lb, this is a substantial server-internal assembly; plan for a proper rail-out service procedure when installing into a populated rack. Country of origin is Mexico.

Compatibility

This kit is engineered specifically for the Lenovo ThinkSystem SR650 V4 platform. It is not interchangeable with SR650 V2 or V3 chassis variants — Lenovo's backplane connectors and mid-plane routing differ across generations, so confirm your chassis generation before ordering. The interface support covers SAS and SATA across the eight fixed-type bays; AnyBay slots add NVMe U.2 as a third option, making this relevant for high-density storage deployments that need tiered drive media in a single tray footprint. If your workload is purely SAS/SATA spinning disk with no NVMe requirement, evaluate whether a simpler fixed-bay backplane meets the need — the AnyBay capability commands a cost premium you should only pay if you plan to use it.

Installation Notes

Installation requires full server rail-out and likely removal of existing backplane hardware. Verify that your SR650 V4's storage controller (typically a ThinkSystem RAID adapter) supports the drive protocol mix you intend to populate — particularly NVMe passthrough or RAID for the AnyBay positions, which may require a specific HBA or RAID controller SKU. Consult the SR650 V4 server component maintenance manual for backplane replacement torque specifications and cable routing diagrams before beginning the swap.