

Synology DS1621+ is a powerful and compact 6-bay network attached storage solution designed to store and protect critical data assets. Today’s growing amount of unstructured data requires smarter and increasingly higher performance methods of storing, accessing, and collaborating. Designed for scalability, the DS1621+ enables you to start small, then expand as your data grows.
AMD Ryzen™
Quad-core 2.2 GHz
Dual M.2 2280 slots for NVMe Cache
110K, 174% higher 4K random read IOPS1
Expand up to 16 drives with two DX517 expansion units
The DS1621+ is faster in just about everything you can imagine. Get things done quicker through Synology Drive and faster and smoother photos management with Synology Moments.1
Upgrade your DS1621+ to match your data requirements, whether it is for faster networking or for higher storage capacity.
HDD/SSDs, 10GbE network adapter cards, and expansion units are sold separately.
DS1621+ is designed to reliably store your data and is backed by Synology's three-year hardware warranty. An optional two-year extended warranty is available in select regions for up to five years of coverage. Learn more
Engineered to handle intensive 24/7 workloads, Synology SSDs are designed to provide consistent high-performance.
1 Status indicator
2 Alert indicator
3 Power button and indicator
4 LAN indicator
5 Drive status indicator
6 Drive tray
7 Drive tray lock
8 USB 3.2 Gen 1 port
9 System fan
10 Power port
11 Kensington Security Slot
12 1GbE RJ-45 port
13 Reset button
14 Expansion port
15 PCIe expansion slot
Notes:
CPU |
CPU Model | AMD Ryzen V1500B |
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CPU Architecture | 64-bit | |
CPU Frequency | 4-core 2.2 GHz | |
Hardware Encryption Engine (AES-NI) | ![]() |
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Memory |
System Memory | 4 GB DDR4 ECC SODIMM |
Memory Module Pre-installed | 4 GB (4 GB x 1) | |
Total Memory Slots | 2 | |
Maximum Memory Capacity | 32 GB (16 GB x 2) | |
Notes |
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Storage |
Drive Bays | 6 |
Maximum Drive Bays with Expansion Unit | 16 (DX517 x 2) | |
M.2 Drive Slots | 2 (NVMe) | |
Compatible Drive Type* (See all supported drives) |
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Maximum Single Volume Size* | 108 TB | |
Hot Swappable Drive | ![]() |
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Notes |
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External Ports |
RJ-45 1GbE LAN Port | 4 (with Link Aggregation / Failover support) |
USB 3.0 Port | 3 | |
eSATA Port | 2 | |
PCIe |
PCIe Expansion | 1 x Gen3 x8 slot (x4 link) |
File System |
Internal Drives |
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External Drives |
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Notes | exFAT Access is purchased separately in Package Center. | |
Appearance |
Size (Height x Width x Depth) | 166 mm x 282 mm x 243 mm |
Weight | 5.1 kg | |
Others |
System Fan | 92 mm x 92 mm x 2 pcs |
Fan Speed Mode |
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Easy Replacement System Fan | ![]() |
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Brightness Adjustable Front LED Indicators | ![]() |
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Power Recovery | ![]() |
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Noise Level* | 25.2 dB(A) | |
Scheduled Power On / Off | ![]() |
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Wake on LAN / WAN | ![]() |
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Power Supply Unit / Adapter | 250 W | |
AC Input Power Voltage | 100 V to 240 V AC | |
Power Frequency | 50/60 Hz, Single Phase | |
Power Consumption* | 51.22 W (Access) 25.27 W (HDD Hibernation) |
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British Thermal Unit | 174.77 BTU/hr (Access) 86.22 BTU/hr (HDD Hibernation) |
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Notes |
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Temperature |
Operating Temperature | 0°C to 40°C (32°F to 104°F) |
Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
Relative Humidity | 5% to 95% RH | |
Certification |
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Warranty |
3-year hardware warranty, extendable to 5-year coverage - EW201 | |
Notes | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) | |
Environment |
RoHS Compliant | |
Packaging Content |
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Optional Accessories |
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Notes | All memory modules will operate at the maximum frequency specified by the CPU manufacturer. |
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