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Synology DS425+

Ranked #29 of 35 in Best 4-Bay NAS (2026). Here is every spec we scored, where it came from, and how it compares.

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#29

Synology DS425+

Best for: 4 official bays, 2 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU

2.2/10

What we like

  • Official table lists a 2.5GbE onboard Ethernet port
  • Official maximum memory capacity is 6 GB
  • Official table lists 2 M.2 slots
  • Official table lists hot-swappable drive bays

Watch out for

  • Official installed system memory is 2 GB

Score breakdown

Installed system memory 28%
Fastest official onboard Ethernet 26%
Official CPU core count 24%
Official onboard Ethernet ports 22%
Installed system memory2 GB
Fastest official onboard Ethernet2.5 Gbps
Official CPU core count4
Official onboard Ethernet ports2
Drive bays (official table)4 official bays — 4 × 3.5" SATA HDD or 2.5" SATA SSD 2 × M.2 2280 NVMe SSD
M.2 slots (official table)2
Installed system memory (official table)2 GB DDR4 non-ECC
Maximum memory capacity (official table)6 GB (2 GB + 4 GB)
Memory type (official table)Official installed memory is listed as non-ECC
CPU (official table)Intel Celeron J4125
Official CPU core count4
Official CPU thread count4
Fastest official onboard Ethernet2.5 Gbps
Official onboard Ethernet port count2
Official onboard Ethernet rows1 × official 1GbE (RJ-45 1GbE LAN Port: 1); 1 × official 2.5GbE (RJ-45 2.5GbE LAN Port: 1)
Aggregate official onboard Ethernet (computed)3.5 Gbps, computed as the sum of official onboard port count × official port speed from the published LAN rows (1 × official 1GbE (RJ-45 1GbE LAN Port: 1); 1 × official 2.5GbE (RJ-45 2.5GbE LAN Port: 1))
Form factor (official table or official model family)desktop
Hot-swappable drives (official table)Yes
Dimensions (official table)166 mm × 199 mm × 223 mm
Weight (official table)2.18 kg
Power supply (official table)90 watts
Hardware Encryption Engine (official table)YES
Total Memory Slots (official table)1
USB 3.2 Gen 1 Port (official table)2
Noise Level (official table)21.6 dB(A)
Wake on LAN / WAN (official table)YES
Power Consumption (official table)28.25 watts (Access) / 6.10 watts (HDD Hibernation)
PriceCheck price

Synology DS425+ head-to-head

ASUSTOR LOCKERSTOR 4 Gen3 (AS6804T)
8.4/10
#1 · 4 official bays, 16 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-435xeu
6.2/10
#2 · 4 official bays, 4 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-432pxu
5.8/10
#3 · 4 official bays, 2 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-432x
5.4/10
#4 · 4 official bays, 4 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-432xeu
5.4/10
#5 · 4 official bays, 4 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-i410x
5.4/10
#6 · 4 official bays, 8 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
ASUSTOR LOCKERSTOR 4RS (AS6504RS) / LOCKERSTOR 4RD (AS6504RD)
4.7/10
#7 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-467x
4.7/10
#8 · 4 official bays, 4 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
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3.6/10
#9 · 4 official bays, 4 GB official installed memory, 1GbE official onboard Ethernet, 4-core official CPU
QNAP TBS-464
3.3/10
#10 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-410e
3.3/10
#11 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-453e
3.3/10
#12 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-464
3.3/10
#13 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-464eu
3.3/10
#14 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-464u
3.3/10
#15 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-473a
3.3/10
#16 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-h665
3.3/10
#17 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-h665u
3.3/10
#18 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-h765eu
3.3/10
#19 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TVS-h474
3.3/10
#20 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR LOCKERSTOR 4 Gen2+ (AS6704T v2)
3.2/10
#21 · 4 official bays, 4 GB official installed memory, 5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR AS5304T
2.5/10
#22 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR AS5404T
2.5/10
#23 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR LOCKERSTOR 4 Gen2 (AS6704T)
2.5/10
#24 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-433
2.5/10
#25 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-433eu
2.5/10
#26 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology DS925+
2.5/10
#27 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology DS925neo+
2.5/10
#28 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-462a
1.8/10
#30 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology DS423
1.7/10
#31 · 4 official bays, 2 GB official installed memory, 1GbE official onboard Ethernet, 4-core official CPU
ASUSTOR DRIVESTOR 4 Pro Gen2 (AS3304T v2)
1.4/10
#32 · 4 official bays, 2 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR DRIVESTOR 4 (AS1104T)
1.2/10
#33 · 4 official bays, 1 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR DRIVESTOR 4 Gen2 (AS1204T)
1.2/10
#34 · 4 official bays, 1 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology RS422+
0.9/10
#35 · 4 official bays, 2 GB official installed memory, 1GbE official onboard Ethernet, 2-core official CPU