Prodoct Informations

The 12-bay RS3621xs+ is capable of delivering over 238K 4K random read IOPS and 5,819 MB/s sequential read throughput1— a true enterprise powerhouse. With full power supply redundancy, an 8-core processor, ECC memory, advanced snapshot technology, and file self-healing, the RS3621xs+ provides a reliable foundation to any data-driven business.

CPU ModelIntel Xeon D-1541CPU Quantity1CPU Core8CPU Architecture64-bitCPU Frequency2.1 (base) / 2.7 (turbo) GHzHardware Encryption Engine

System Memory8 GB DDR4 ECC UDIMMMemory Module Pre-installed8 GB (8 GB x 1)Total Memory Slots4Maximum Memory Capacity64 GB (16 GB x 4)Notes

• Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
• Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
• For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.

Drive Bays12Maximum Drive Bays with Expansion Unit36 (RX1217 x 2)Compatible Drive Type* (See all supported drives)

• 3.5" SATA HDD
• 2.5" SATA SSD

Hot Swappable Drive*Notes

• Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.
• "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.

RJ-45 1GbE LAN Port4RJ-45 10GbE LAN Port2USB 3.2 Gen 1 Port*2Expansion Port2Expansion Port TypeInfinibandNotesThe USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.

PCIe Expansion2 x Gen3 x8 slots (x8 link)

Form Factor (RU)2USize (Height x Width x Depth)88 mm x 482 mm x 724 mmWeight14.5 kgRack Installation Support*4-post 19" rack (Synology Rail Kit - RKS-02)NotesThe rail kit is sold separately

System Fan80 mm x 80 mm x 4 pcsFan Speed Mode

• Full-Speed Mode
• Cool Mode
• Quiet Mode

Easy Replacement System FanPower RecoveryNoise Level*50.2 dB(A)Scheduled Power On / OffWake on LAN / WANPower Supply Unit / Adapter500 watts
550 watts*Redundant Power SupplyAC Input Power Voltage100 V to 240 V ACPower Frequency50/60 Hz, Single PhasePower Consumption142.5 watts (Access)
72.76 watts (HDD Hibernation)British Thermal Unit485.93 BTU/hr (Access)
248.11 BTU/hr (HDD Hibernation)Notes

• Power supply specifications vary by hardware revision. A 500 W PSU is used in devices with serial numbers containing SZR (5th to 7th digits), while a 550 W PSU is in devices with UUR and VR1 serial numbers. For more information, refer to the Product Change Notice.
• Power consumption is measured when it is fully loaded with Synology 8TB HAT5300-8T hard drive(s).
• Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%

Operating Temperature0°C to 35°C (32°F to 95°F)Storage Temperature-20°C to 60°C (-5°F to 140°F)Relative Humidity5% to 95% RH

• FCC
• CE
• BSMI
• VCCI
• RCM
• EAC
• CCC
• KC
• UL

5 YearsNotesThe warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

RoHS Compliant

• Main Unit X 1
• Accessory Pack X 1
• AC Power Cord X 2
• Quick Installation Guide X 1

• DDR4 ECC UDIMM: D4EC-2666-8G/D4EC-2666-16G
• Expansion Units: RX1217/RX1217RP
• Enterprise Series 3.5" SATA HDD: HAT5300 Series
• Enterprise Series 2.5" SATA SSD: SAT5200 Series
• M.2 SSD & 10GbE Combo Adapter Card: E10M20-T1
• M.2 SSD Adapter Card: M2D20
• 25GbE Network Interface Card: E25G30-F2
• 10GbE Network Interface Card: E10G21-F2/E10G30-T2/E10G18-T1
• Rail Kit Sliding: RKS-02

NotesAll memory modules will operate at the maximum frequency specified by the CPU manufacturer.