QNAP CTL-ES2486DC-2142IT-48G ES2486dc Replacement Controller Module
Overview
The CTL-ES2486DC-2142IT-48G is a factory-replacement controller module (FRU) for the QNAP ES2486dc dual-controller enterprise NAS. It installs as one of two active controllers in the ES2486dc chassis, each running an Intel Xeon D-2142IT 8-core processor (1.90 GHz base, 3.0 GHz boost) with 48 GB RDIMM DDR4 ECC RAM per controller. This is a field-replaceable unit for maintaining or restoring dual-controller redundancy in production deployments — not a standalone storage device. With 64-bit x86 architecture and SAS 12 Gbps SSD interface support, the controller sustains the ES2486dc's capacity to handle up to 24 x 2.5-inch SAS 12 Gbps SSDs with full I/O throughput, which is the critical requirement for enterprise workloads running on this platform.
Compatibility
This controller module is specific to the QNAP ES2486dc enterprise NAS series. Compatible chassis include the ES2486dc-2142IT-48G and ES2486dc-2142IT-128G configurations. The ES2486dc uses two of these controller modules operating in active-active mode; both controllers must be populated for full redundancy. The SAS 12 Gbps interface aligns with the ES2486dc's drive backplane — do not attempt to pair this module with ES NAS models using a different backplane or controller slot design. Verify your chassis model and existing controller generation before ordering; mixing controller revisions in a dual-controller array risks compatibility issues and potential data integrity problems. Consult the NAS storage compatibility matrix and your storage planning documentation for your specific deployment before procurement.
Installation Notes
Controller module hot-swap eligibility depends on array state and QNAP firmware version at time of replacement — confirm with QNAP support before attempting a live swap on an active array. ECC RAM configuration (48 GB RDIMM DDR4) is factory-installed and not field-upgradeable on this FRU; if your deployment requires 128 GB per controller, source the higher-memory controller variant instead. Proper grounding and ESD precautions are mandatory when handling the module outside the chassis. DC power input labeled 2486V DC applies to the chassis power architecture — do not apply external DC power directly to the controller module.
