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Two green DDR4 ECC UDIMM sticks in a pair

OWC

OWC 32GB (2x16GB) DDR4 2666MHz ECC UDIMM for Synology RS2418+ RS2418RP+ memory upgrade

SKU CH-ME8H-RKM25

32 GB kit of two 16 GB DDR4 2666 MHz ECC unbuffered UDIMMs for Synology RS2418+ and RS2418RP+ NAS

  • Capacity32GB (2 x 16GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 32GB (2 x 16GB)

  • 32 GB kit expands NAS capacity for heavier workloads
  • Dual 16 GB modules populate both slots for balanced operation
  • DDR4 2666 MHz CL19 delivers rated throughput
  • ECC unbuffered design protects data integrity in Synology RS2418+ and RS2418RP+
  • JEDEC 1.2 V standard ensures warranty-safe compatibility

Synology RS2418+ ECC memory upgrade

This 32 GB kit contains two 16 GB DDR4 2666 MHz ECC UDIMM modules built for the Synology RS2418+ and RS2418RP+ rack-mounted NAS units. The 288-pin unbuffered DIMMs run at 1.2 V with CL19 latency and 2Rx8 organisation. JEDEC-standard compliance ensures the upgrade does not void the system warranty.

Sustained-load behaviour with ECC protection

Error-correcting code detects and corrects single-bit errors during continuous file serving, backup and virtualization workloads. The modules are validated at 2666 MHz and will down-clock to 2400 MHz or 2133 MHz if the platform requires it. Unbuffered topology keeps latency low for the memory controller in these specific Synology models.

Tool-less DIMM installation in the chassis

The RS2418+ and RS2418RP+ expose memory slots after removing the top cover; no special tools are needed. Align the notch on each 288-pin module with the slot key and press until the retention clips click. The only common issue is inserting a module off-centre, which prevents the clips from engaging and leaves the system unbootable.

Points forts

  • 32 GB kit expands NAS capacity for heavier workloads
  • Dual 16 GB modules populate both slots for balanced operation
  • DDR4 2666 MHz CL19 delivers rated throughput
  • ECC unbuffered design protects data integrity in Synology RS2418+ and RS2418RP+
  • JEDEC 1.2 V standard ensures warranty-safe compatibility

Caractéristiques

BrandOWC
Part Number2E6D42R8032P
Capacity32GB (2 x 16GB)
Type288-Pin DDR4 ECC UDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology RackstationRS2418+
Synology RackstationRS2418RP+

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Questions sur cet article

How much power does each 16GB DDR4 2666MHz ECC UDIMM draw at 1.2V during continuous operation?

Each module runs at 1.2V, the standard DDR4 voltage, keeping power draw low during all-day NAS workloads.

What must the Synology RS2418+ or RS2418RP+ already have for this 288-pin DDR4 kit to install and run?

The RackStation needs free DDR4 UDIMM slots that accept 288-pin ECC unbuffered modules; the kit is validated for those two models.

Will the 2666MHz CL19 modules downclock reliably if the RS2418+ currently runs 2133MHz or 2400MHz memory?

Yes, the kit is backward compatible with 2133MHz and 2400MHz speeds and will operate at the system's native rate.

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