Huawei 03050BBH SAS Controller Unit (STL6SPCIA13) for OceanStor 2810 V5 / 5310 V5

The 03050BBH SAS Controller is a controller unit module for Huawei OceanStor 2810 V5 and 5310 V5 storage systems, supplied under model code STL6SPCIA13. It handles the SAS connectivity that links the storage system to its disk enclosures — the path your data actually travels when you expand capacity or replace a failed link.

One clarification before you buy: this is the SAS controller unit (expansion/interface module), not the main storage controller that runs the array’s control plane. If you are replacing a failed system controller, you need a different part — contact us and we will help you identify the correct one.

Key Specifications

What the SAS Controller Unit Does

This module provides the SAS ports and link logic that connect the storage system to expansion disk enclosures. Every I/O to an external enclosure passes through it, so a degraded unit shows up quickly: intermittent link errors, an enclosure that randomly drops out of the topology, or capacity that the system reports but cannot reliably access. Replacing the module restores the path without touching your data.

Scaling Out Capacity

If you are adding disk enclosures to an existing 2810 V5 or 5310 V5, the SAS controller unit is part of what makes that possible. Confirm your current configuration supports the number of enclosures you plan to attach, and check that the module revision matches what your system expects before expanding — mismatched revisions can leave new enclosures undetected.

When a Replacement Is the Right Call

Typical symptoms that point at this module rather than a disk or cable: SAS link errors logged against an enclosure port, an enclosure that disappears and reappears under load, throughput that collapses on one path only, or a port LED that stays dark with a known-good cable. Rule out cables and drive faults first — those are cheaper and far more common.

Before You Order: Slot, Revision and Firmware

Confirm three things before purchase: the model code on your existing module matches STL6SPCIA13, the slot position is the one showing the fault, and your system firmware level supports the replacement revision. If the array runs redundant controller units, replace one at a time and verify the SAS topology has recovered before touching the second. Send us a photo of the module label if you are unsure — we will confirm fitment before dispatch.

Ideal Applications

• Replacing a failed SAS controller unit in 2810 V5 / 5310 V5

• Restoring SAS paths to expansion disk enclosures

• Capacity expansion projects adding disk shelves

• On-site spare stock for business-critical storage

Testing, Warranty and Support

Every module is tested before shipment and matched to OceanStor 2810 V5 and 5310 V5 systems. Units ship with our warranty and technical support, and volume pricing is available for spare-parts programs.

Need help confirming the part? Read about SAS domain and cascading, or shop more OceanStor V5 controllers and spare parts from our catalog.