Synology RS3621xs+ Upgrade Guide
Maximize the performance and lifespan of your Synology RS3621xs+. Every upgrade option below is verified compatible.
Verified Specifications
| Processor Options | Intel Xeon D-1541 8C/16T 2.1/2.7GHz |
| Memory Configuration | 8GB DDR4 ECC UDIMM; max 64GB |
| Drive Configurations | 12 bays SATA (36 with 2x RX1217) |
| Networking Options | 4x 1GbE + 2x 10GbE; 2x PCIe Gen3 x8 |
| Specification Source | Synology official documentation (verified 2026-07-02) |
Frequently Asked Questions
Upgrade Storage
Moving from spinning disk to SSD or NVMe storage provides the largest single performance improvement — often 10-50x faster I/O. Consider NVMe for boot drives and high-IOPS workloads.
DISK TRAY (TYPE D6) Synology Disk Tray Type D6
DISK TRAY (TYPE D7) Synology Disk Tray Type D7
DISK TRAY (TYPE R3) Synology Disk Tray Type R3
DISK TRAY (TYPE R7) Synology Disk Tray Type R7
DISK TRAY (TYPE R8) Synology Disk Tray Type R8
DX1222 Synology 12-BAY Expansion Unit
Upgrade Power & Cooling
This category provides verified compatible upgrade paths. ICD engineers validate every part for compatibility with your specific server model and workload requirements.
FAN 40*40*28_2 Synology Replacement Fan 40X40X28MM
PSU 100W_3 Synology 100W Replacement Power Supply Unit
PSU 250W_3 Synology 250W Replacement Power Supply Unit
PSU 250W_5 Synology 250W Power Supply Unit GEN5
PSU 500W-RP MODULE_2 Synology 500W Redundant Power Supply Module
PSU 500W-RP SET_2 Synology 500W Redundant Power Supply Set
Upgrade Memory
Memory is the most impactful upgrade for virtualization and database workloads. Upgrading from 64GB to 128GB or 256GB can dramatically improve VM density and application response times.
D4ECSO-2400-16G Synology 16GB DDR4 ECC SO-DIMM 2400MHZ
D4ECSO-2666-16G Synology 16GB DDR4-2666 ECC SO-DIMM Memory
D4ER01-16G Synology 16GB DDR4 ECC Registered DIMM 2666MHZ GEN2
D4ER01-32G Synology 32GB DDR4-3200 ECC RDIMM Memory
D4ES01-16G Synology 16GB DDR4 ECC SO-DIMM 2666MHZ
D4ES01-4G Synology 4GB DDR4 ECC SO-DIMM 2666MHZ
Upgrade Networking
Stepping up from 1GbE to 10GbE or 25GbE eliminates network bottlenecks for VM migration, iSCSI storage traffic, and backup windows. Most modern workloads benefit from at least 10GbE.
E100G-F2 Synology DUAL-PORT 100GBE QSFP28 PCIe 3.0 X16 Network Card
E10G17-F2 Synology DUAL-PORT 10GBE SFP+ PCIe 3.0 X8 Network Card
E10G18-T1 Synology 10GBE RJ-45 PCIe Network Adapter Single Port
E10G18-T2 Synology 10GBE RJ-45 PCIe Network Adapter Dual Port
E10G21-F2 Synology 10GBE SFP+ PCIe Network Adapter Dual Port
E10G22-T1-Mini Synology 10GBE RJ-45 Network Upgrade Module
More Synology RS3621xs+ Resources
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