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Four green circuit boards with gold contacts and black chips

OWC

OWC 32GB (4×8GB) DDR4 2666 ECC Registered RDIMM server RAM

SKU CH-Z4GW-04A6E

32 GB DDR4-2666 ECC registered RDIMM kit of four 8 GB modules for Synology FS6400 and HD6500 NAS

  • Capacity32GB (4 x 8GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 32GB (4 x 8GB)

Rank 1Rx4

  • ECC registered design protects data integrity in servers and workstations
  • 32 GB kit (4 × 8 GB) expands memory capacity for demanding workloads
  • DDR4 2666 MHz CL19 at 1.2 V delivers rated speed with standard voltage
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 MHz and 2400 MHz systems

Target system

This 32GB kit provides four 8GB DDR4 2666 ECC registered RDIMMs built for Synology FS6400 and HD6500 NAS units. It replaces the D4RD-2666-8G and D4ER01-8G modules in servers and workstations that require registered memory. It will not work in standard desktop PCs or with unbuffered or load-reduced DIMMs.

Thermals and power

Each module runs at 1.2V with CL19 latency and has no heat spreader. The registered buffer adds a clock cycle for signal integrity in multi-DIMM configurations. Power draw scales with the four-module population and the 2666 MT/s data rate.

Compatibility and standards

The kit is JEDEC and RoHS compliant and backward compatible with 2133 and 2400 MT/s operation. It is validated for the FlashStation FS6400 and HIGH Density HD6500 platforms. Buyers needing unbuffered ECC or consumer SO-DIMM form factors cannot use this product.

Puntos fuertes

  • ECC registered design protects data integrity in servers and workstations
  • 32 GB kit (4 × 8 GB) expands memory capacity for demanding workloads
  • DDR4 2666 MHz CL19 at 1.2 V delivers rated speed with standard voltage
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133 MHz and 2400 MHz systems

Especificaciones

BrandOWC
Part Number2R6D41R4032S
Capacity32GB (4 x 8GB)
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Otras versiones de este modelo

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Preguntas sobre este artículo

How do I install the four 8 GB DDR4 2666 registered DIMMs in my Synology FS6400, and what step is often missed?

Power down the NAS, open the chassis, and seat each 288-pin module until the retention clips click; the step most people miss is populating all four slots so the dual-channel kit runs at full width.

What maintenance or replacement will this 32 GB ECC registered kit need over time?

No routine maintenance is required; if a module ever fails, replace it with another DDR4 2666 CL19 1.2 V 1Rx4 registered DIMM to keep ECC protection intact.

What limit appears first when the memory runs under sustained load in a server?

The CL19 latency at 2666 MT/s sets the bandwidth ceiling; sustained workloads will hit that timing wall before voltage or temperature become factors.

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