6-bay scalable desktop NAS
Synology DS1621+ 6-bay Scalable Desktop NAS
A six-bay NAS with AMD Ryzen processing, ECC memory, dual M.2 NVMe slots and expansion to 16 drives.
- Processor
- AMD Ryzen V1500B
- Memory
- 4 GB DDR4 ECC SODIMM
- Drive bays
- 6; up to 16 (DX517 × 2)
- Networking
- 4 × 1GbE
Start compact and expand as business data grows
The Synology DS1621+ provides six internal bays in a compact chassis while retaining room for two DX517 expansion units, PCIe connectivity and M.2 NVMe options. It is positioned for shared business data, backup and collaborative workflows that need a clear growth path.
Six-bay starting point
Balance desktop footprint and storage flexibility with six hot-swappable SATA bays.
Expansion to 16 drives
Add two DX517 units when more drive bays are required.
Ryzen and ECC platform
The AMD Ryzen V1500B and 4 GB ECC memory provide a dependable business foundation.
Four-port networking
Four built-in 1GbE ports support flexible network configuration.
Dual M.2 NVMe slots
Install compatible M.2 2280 NVMe SSDs for supported acceleration workflows.
PCIe flexibility
The Gen3 x8 slot provides a path to compatible network or adapter upgrades.
Who is the Synology DS1621+ best for?
A strong choice for
- Small-business shared storage
- Centralised workstation backups
- Creative teams with growing data
- Deployments needing six internal bays
- Buyers planning later DX517 expansion
Consider another model if you need
- You need built-in 10GbE
- You require more than 16 total bays
- You need redundant power
- A two- or four-bay model is enough for your storage plan
Key specifications
- Model
- DS1621+
- Product type
- 6-bay scalable desktop NAS
- Processor
- AMD Ryzen V1500B
- CPU cores
- 4
- CPU frequency
- 2.2 GHz
- System memory
- 4 GB DDR4 ECC SODIMM
- Maximum memory
- 32 GB (16 GB × 2)
- Drive bays
- 6; up to 16 (DX517 × 2)
- Drive categories
- | 3.5" SATA HDD; 2.5" SATA HDD; 2.5" SATA SSD; M.2 2280 NVMe SSD
- Built-in network
- 4 × 1GbE
- USB ports
- 3 × USB 3.2 Gen 1
- M.2 slots
- 2 (NVMe)
- PCIe expansion
- 1 × Gen3 ×8 slot (x4 link)
- Dimensions
- Not specified
- Weight
- 5.1 kg
- Warranty
- 3-year hardware warranty, extendable to 5 years with extended warranty plus
Full technical specifications
Processor, memory and storage
| CPU Model | AMD Ryzen V1500B |
|---|---|
| CPU Quantity | 1 |
| CPU Core | 4 |
| CPU Architecture | 64-bit |
| CPU Frequency | 2.2 GHz |
| Hardware Encryption Engine | Supported |
| System Memory | 4 GB DDR4 ECC SODIMM |
| Memory Module Pre-installed | 4 GB (4 GB × 1) |
| Total Memory Slots | 2 |
| Maximum Memory Capacity | 32 GB (16 GB × 2) |
| Memory 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. | |
| Drive Bays | 6 |
| Maximum Drive Bays with Expansion Unit | 16 (DX517 × 2) |
| M.2 Drive Slots | 2 (NVMe) |
| Drive Type | | 3.5" SATA HDD; 2.5" SATA HDD; 2.5" SATA SSD; M.2 2280 NVMe SSD |
| Hot Swappable Drive* | Supported |
| Storage notes | The hot swappable drive feature is not supported by M.2 SSD slots. |
Network, ports and expansion
| RJ-45 1GbE LAN Port | 4 |
|---|---|
| USB 3.2 Gen 1 Port* | 3 |
| Expansion Port | 2 |
| Expansion Port Type | eSATA |
| External Ports notes | The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. |
| PCIe Expansion | 1 × Gen3 ×8 slot (x4 link) |
Physical design and power
| Size (Height × Width × Depth) | 166 mm × 282 mm × 243 mm |
|---|---|
| Weight | 5.1 kg |
| System Fan | 92 mm × 92 mm × 2 pcs |
| Fan Speed Mode | | Full-Speed Mode; Cool Mode; Quiet Mode |
| Easy Replacement System Fan | Supported |
| Brightness Adjustable Front LED Indicators | Supported |
| Power Recovery | Supported |
| Noise Level* | 25.2 dB(A) |
| Scheduled Power On / Off | Supported |
| Wake on LAN / WAN | Supported |
| Power Supply Unit / Adapter | 250 watts |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase |
| Power Consumption | 51.22 watts (Access); 25.27 watts (HDD Hibernation) |
| British Thermal Unit | 174.77 BTU/hr (Access); 86.22 BTU/hr (HDD Hibernation) |
| Others notes | | Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX 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% |
Environment, warranty and package
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
|---|---|
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) |
| Operating Humidity | 8% to 80% RH |
| Storage Humidity | 5% to 95% RH |
| Certification | | FCC; CE; BSMI; VCCI; RCM; EAC; CCC; KC; BIS |
| Warranty | 3-year hardware warranty, extendable to 5 years with extended warranty plus |
| Warranty notes | | The warranty period starts from the purchase date as stated on your purchase receipt. | |
| Environment | RoHS Compliant |
| Packaging Content | | Main Unit X 1; Accessory Pack X 1; AC Power Cord X 1; RJ-45 LAN Cable X 2; Quick Installation Guide X 1 |
Frequently asked questions about the Synology DS1621+
What is the Synology DS1621+?
The Synology DS1621+ is a 6-bay scalable desktop NAS for small-business shared storage, centralised workstation backups, creative teams with growing data.
Which processor is in the Synology DS1621+?
It uses the AMD Ryzen V1500B with 4 cores at 2.2 GHz.
How much memory does the Synology DS1621+ include?
It includes 4 GB DDR4 ECC SODIMM and the supplied maximum memory capacity is 32 GB (16 GB × 2).
How many drive bays does the Synology DS1621+ have?
It has 6 internal drive bays and supports the supplied maximum of 16 (DX517 × 2).
Which drive types does the Synology DS1621+ support?
| 3.5" SATA HDD; 2.5" SATA HDD; 2.5" SATA SSD; M.2 2280 NVMe SSD. Confirm exact drive models on Synology’s compatibility list.
What networking is built into the Synology DS1621+?
The verified built-in network interfaces are 4 × 1GbE.
Can the Synology DS1621+ expand beyond its internal bays?
Yes. The verified maximum is 16 (DX517 × 2). Expansion units are sold separately.
Does the Synology DS1621+ include storage drives?
No. This listing identifies the Synology DS1621+ as diskless, so compatible drives are selected separately.
What are the Synology DS1621+ dimensions?
It measures Not specified and weighs 5.1 kg.
What warranty applies to the Synology DS1621+?
Synology specifies 3-year hardware warranty, extendable to 5 years with extended warranty plus. Warranty-extension availability depends on region.
- DS1621+ is listed as diskless; compatible storage drives are selected separately.
- Confirm exact drives, memory and accessories on Synology’s compatibility list for DS1621+.
- Expansion units required to reach 16 (DX517 × 2) are sold separately.
- M.2 SSD bays are not hot-swappable; confirm the supported SSD role and exact models before purchase.
- Actual usable capacity and performance depend on installed drives, storage configuration, workloads and network environment.
