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Two green DDR4 ECC SODIMM sticks, no heat spreaders

OWC

OWC 32GB (2x16GB) DDR4 2666MHz CL19 ECC SODIMM for Synology RS1221+/RP+

SKU CH-WE1Z-S07SM

A 32 GB DDR4 ECC SODIMM kit running at 2666 MHz CL19 for Synology RS1221+ and RS1221RP+ NAS units

  • Capacity32GB (2 x 16GB)
  • Type260-Pin DDR4 ECC SODIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 32GB (2 x 16GB)

  • 32 GB total capacity expands NAS multitasking headroom
  • DDR4 2666 MHz CL19 matches RS1221+ and RS1221RP+ specs
  • ECC unbuffered design protects data integrity in ZFS volumes
  • Dual-rank 2Rx8 16 GB modules fill both SODIMM slots
  • JEDEC and RoHS compliant for warranty-safe upgrade

Targeted NAS upgrade

This 32 GB kit contains two 16 GB DDR4 2666 MHz CL19 ECC SODIMM modules designed specifically for Synology Rackstation RS1221+ and RS1221RP+ units. JEDEC-standard 1.2 V unbuffered 2Rx8 chips ensure warranty-safe compatibility and error-correcting reliability for always-on micro-server workloads.

Suited users and limits

Administrators expanding memory in the listed Rackstation models gain headroom for virtual machines, Docker containers and large file caches. Systems requiring registered or load-reduced DIMMs, non-ECC memory, or capacities beyond the platform’s two-slot maximum cannot use this kit.

Capacity and headroom

The 32 GB total fills both SODIMM slots, letting the NAS run multiple services and sizeable ZFS or Btrfs volumes without swapping. Workloads that exceed 32 GB active memory or demand faster than 2666 MHz throughput will hit the platform’s hard ceiling.

Pluspunten

  • 32 GB total capacity expands NAS multitasking headroom
  • DDR4 2666 MHz CL19 matches RS1221+ and RS1221RP+ specs
  • ECC unbuffered design protects data integrity in ZFS volumes
  • Dual-rank 2Rx8 16 GB modules fill both SODIMM slots
  • JEDEC and RoHS compliant for warranty-safe upgrade

Specificaties

BrandOWC
Part Number2C6D42R8032P
Capacity32GB (2 x 16GB)
Type260-Pin DDR4 ECC SODIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemSynology RackstationRS1221+
Synology RackstationRS1221RP+

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Vragen over dit artikel

Does this kit need the Synology RS1221+ or RS1221RP+ to have empty 260-pin DDR4 SODIMM slots before I install it?

Yes, the kit contains two 16 GB DDR4 2666 CL19 ECC SODIMM modules that plug into vacant 260-pin slots in the RS1221+ or RS1221RP+.

If my RS1221+ currently runs 2400 MHz DDR4, will these 2666 MHz modules downclock automatically?

The modules are backwards compatible with 2400 MHz and 2133 MHz systems, so they will run at the speed supported by the NAS memory controller.

How can I confirm the NAS recognises the full 32 GB ECC capacity after installation?

Power on the unit, open DSM Control Panel → Info Center, and verify the Memory section shows 32 GB with ECC status reported as active.

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