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Two green 288-pin DDR4 RDIMM modules in anti-static tray

OWC

OWC 128GB (2x64GB) DDR4 2933 CL21 ECC RDIMM memory upgrade

SKU CH-YD8W-PC5BA

128 GB DDR4 2933 ECC registered RDIMM kit (2 × 64 GB) for Cisco HX and C480 M5 servers

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 128GB (2 x 64GB)

  • 128 GB total capacity from two 64 GB modules
  • DDR4 2933 MHz speed with CL21 latency
  • ECC registered design protects data integrity in servers
  • 2 V operation reduces power draw and heat
  • Compatible with Cisco HX220c M5, HX240c M5 and C480 ML M5

128GB DDR4 2933 ECC RDIMM kit

This 128GB kit contains two 64GB DDR4 2933 CL21 ECC registered DIMMs built for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 servers. It runs at 1.2V with a 2Rx4 layout and replaces Cisco part numbers HXMRX64G2RTH, HXSPM64G2RTH, UCSMRX64G2RTH and UCSMRX64G2RTHS. Buyers who need unbuffered desktop memory cannot use this product.

Replaces slower DDR4 or fills empty slots

The modules are backward compatible with 2133, 2400 and 2666MHz DDR4 systems, so they can replace slower memory or populate vacant slots in the supported Cisco platforms. The jump is worth it when the server workload demands ECC registered capacity beyond the current configuration. Systems requiring load-reduced DIMMs or non-ECC memory will not accept this kit.

Check Cisco model and DIMM population rules

Verify the exact Cisco model matches the supported list before ordering. Confirm the server accepts 2Rx4 registered DIMMs at the target speed and that the memory-channel population rules allow two 64GB modules in the desired configuration. Mixing with unbuffered or load-reduced memory is not supported.

Puntos fuertes

  • 128 GB total capacity from two 64 GB modules
  • DDR4 2933 MHz speed with CL21 latency
  • ECC registered design protects data integrity in servers
  • 2 V operation reduces power draw and heat
  • Compatible with Cisco HX220c M5, HX240c M5 and C480 ML M5

Especificaciones

BrandOWC
Part Number2R9D42R4128P
Capacity128GB (2 x 64GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemCisco HX220c M5
Cisco HX240c M5
Cisco HXAF220c M5
Cisco HX-E-220M5SX
Cisco C480 ML M5

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Preguntas sobre este artículo

Does the 288-pin DDR4 RDIMM fit the Cisco HX220c M5 and C480 ML M5 memory slots?

Yes, the 288-pin registered DIMM is built for the Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 server platforms listed in the compatibility data.

What is the correct installation sequence for the two 64 GB modules in a Cisco M5 server?

Install the modules in the channel order specified by the Cisco M5 service guide, populating the same channel pair first; the common mistake is placing them in mismatched channels which prevents the registered ECC memory from initialising.

When should the 1.2 V ECC registered RDIMMs be replaced in a production server?

Replace the modules if the system logs report correctable ECC errors that exceed the platform threshold or if a DIMM fails the built-in memory diagnostics during a scheduled maintenance window.

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