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Four green circuit boards with black memory chips and gold edge connectors

OWC

OWC 64GB (4x16GB) DDR4 2666 ECC UDIMM Memory Upgrade for Synology RS2418+ & RS2418RP+

SKU CH-VH0W-KPBQW

Four 16 GB DDR4 ECC UDIMM modules running at 2666 MHz add 64 GB of error-correcting memory to Synology RS2418+ and RS2418RP+ NAS systems

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR4 ECC UDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 64GB (4 x 16GB)

  • 64GB kit expands Synology RS2418+ and RS2418RP+ capacity with four 16GB modules
  • ECC protection detects and corrects single-bit errors for data integrity in NAS workloads
  • DDR4 2666 CL19 speed matches factory specifications for stable operation
  • 2V JEDEC-standard voltage reduces power draw and heat in rackmount enclosures
  • Unbuffered 288-pin UDIMM form factor fits directly into the RackStation memory slots

64GB DDR4 ECC kit for Synology RS2418 series

This 64GB kit contains four 16GB DDR4 2666 ECC UDIMM modules built for the Synology RackStation RS2418+ and RS2418RP+. The unbuffered 288-pin DIMMs run at 1.2V with CL19 latency and 2Rx8 organisation. It targets administrators who need the maximum supported memory for virtualization, heavy file serving or surveillance workloads on these specific NAS units.

Replaces lower-capacity or non-ECC factory memory

The modules step up from the standard installed DIMMs by adding error-correcting code and a full 64GB capacity across all four slots. The upgrade is worth it when the workload regularly hits the memory ceiling, triggers swapping or requires ECC protection for data integrity. The kit is backward compatible with 2133MHz and 2400MHz bus speeds, so it will clock down automatically if the system requires it. Buyers who need more than 64GB or registered DIMM support cannot use this kit.

Tool-free slot installation with slot-order care

Installation is a straightforward DIY task: power down the unit, open the chassis and press each module into the 288-pin slots until the latches click. The most common issue is populating the slots in the wrong order, which can prevent the NAS from recognising the full capacity. Follow the manufacturer’s slot-population guide for the RS2418+ and RS2418RP+ to avoid a no-post condition. No heat spreaders are fitted, so airflow clearance is not a concern.

Helstu kostir

  • 64GB kit expands Synology RS2418+ and RS2418RP+ capacity with four 16GB modules
  • ECC protection detects and corrects single-bit errors for data integrity in NAS workloads
  • DDR4 2666 CL19 speed matches factory specifications for stable operation
  • 2V JEDEC-standard voltage reduces power draw and heat in rackmount enclosures
  • Unbuffered 288-pin UDIMM form factor fits directly into the RackStation memory slots

Tæknilýsing

BrandOWC
Part Number2E6D42R8064S
Capacity64GB (4 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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Will the 288-pin DDR4 UDIMM modules fit the memory slots in my Synology RS2418+?

Yes, the kit uses 288-pin DDR4 ECC UDIMM modules, which are the correct form factor for the RS2418+ and RS2418RP+ memory slots.

Do I need to install all four 16GB sticks at once, or can I add them one at a time?

You can install them one at a time; the system supports mixed capacities, but the common mistake is not seating each module until the retention clips click on both ends.

How often will the ECC memory need to be replaced in a 24/7 NAS?

ECC UDIMM modules have no scheduled replacement interval; they run at 1.2 V with no heat spreader, so they typically last the life of the RS2418+ unless a module fails.

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