NAS RackStation RS3626xs

The Synology RS3626xs is a 2U rack-mounted NAS positioned just below the RS4826xs+ — same physical chassis and form factor, but with a less powerful CPU, less RAM, and a smaller maximum expansion ceiling.


Hardware at a Glance

• CPU: Intel Xeon D-1726, 6-core/12-thread, 2.9/3.5 GHz
• RAM: 8 GB DDR4 ECC UDIMM, expandable to 48 GB across 6 slots
• Drive bays: 12 internal (3.5" SATA HDD or 2.5" SATA SSD), expandable to 36 via two RX1225RP expansion units
• Networking: 2x 10GbE RJ-45 built-in, 2x PCIe Gen4 x8 slots for additional NICs, 1x out-of-band management port
• USB: 2x USB 3.2 Gen 1
• Power: 550W redundant PSU, ~148W under load
• Noise: 38.8 dB(A) — notably quieter than the RS4826xs+ (46.3 dB)
• Form factor: 2U, 88 × 482 × 724 mm, 14.5 kg
• Warranty: 5 years

Download Datasheet


Performance
Synology rates it at over 6,300/3,700 MB/s sequential read/write and 115,000+ 4K random write IOPS. Interestingly the sequential throughput is marginally higher than the RS4826xs+ on paper, though the random IOPS are lower, reflecting the weaker CPU. M.2 NVMe SSD cache is supported via add-in cards without consuming drive bays.


Who Is This For?
The RS3626xs sits in the same enterprise rack category as the RS4826xs+, with the same reliability features — redundant PSUs, hot-swap everything, HA clustering, and out-of-band management. The practical differences versus the RS4826xs+ are fewer drive bays at max expansion (36 vs 48), less RAM headroom (48 GB vs 96 GB), and a lighter CPU. If you don't need petabyte-scale storage or the highest VM density, it's the more cost-efficient entry into this product family.


Software Highlights
Same DSM feature set as the RS4826xs+ with some capacity differences: up to 90 IP cameras (vs 125), 3,300 Synology Drive users (vs 5,100), and 3,900 MailPlus users (vs 6,000). High Availability, storage tiering, VMware/Hyper-V/XenServer certification, iSCSI, and Fibre Channel are all present.


Drive Compatibility
As with all current enterprise Synology units, compatible drives are mandatory. Check the Synology Compatibility List before purchasing.


For more information check the official site:


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