Compare TerraMaster and Synology, Model Against Model
2 matched pairs, each from the maker's own specification page
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At two bays, TerraMaster F2-425 against Synology DS225+: both have two SATA bays; network ports are 1 x 2.5GbE on the F2-425 against 1 x 1GbE + 1 x 2.5GbE on the DS225+; memory tops out at 16GB on the F2-425 and 6GB on the DS225+; the F2-425 ships with 4GB of DDR4 and the DS225+ with 2GB of DDR4. At four bays, TerraMaster F4-425 Plus against Synology DS425+: both have four SATA bays; the F4-425 Plus has three M.2 slots and the DS425+ two; network ports are 2 x 5GbE on the F4-425 Plus against 1 x 1GbE + 1 x 2.5GbE on the DS425+; memory tops out at 32GB on the F4-425 Plus and 6GB on the DS425+.
F2-425 against DS225+: the published specifications
| TerraMaster F2-425 | Synology DS225+ | |
|---|---|---|
| Processor | Intel Celeron N5095, quad core 2.0 GHz (burst to 2.9 GHz) | Intel Celeron J4125 |
| Memory | 4GB DDR4, up to 16GB | 2GB DDR4, up to 6GB |
| Drive bays | 2 SATA | 2 SATA |
| Largest drive quoted or listed | 30TB | 24TB |
| M.2 NVMe slots | None | None |
| Network ports | 1 x 2.5GbE | 1 x 1GbE + 1 x 2.5GbE |
| RAID types listed | Single, JBOD, RAID 0, RAID 1, TRAID | Basic, JBOD, RAID 0, RAID 1, SHR |
| Drive policy | No policy stated on its specification page | Its compatibility list names only Synology drives; from DSM 7.3 third-party hard drives and SATA SSDs can build storage pools |
What separates the F2-425 and the DS225+
Shared: two SATA bays.
Network ports are 1 x 2.5GbE on the F2-425 against 1 x 1GbE + 1 x 2.5GbE on the DS225+.
Memory tops out at 16GB on the F2-425 and 6GB on the DS225+.
The F2-425 ships with 4GB of DDR4 and the DS225+ with 2GB of DDR4.
The largest drive the maker quotes or lists is 30TB for the F2-425 and 24TB for the DS225+.
The processors are the Intel Celeron N5095 and the Intel Celeron J4125.
Drive rules for the DS225+: its compatibility list names only Synology drives; from DSM 7.3 third-party hard drives and SATA SSDs can build storage pools. TerraMaster's specification page for the F2-425 states no such policy.
F4-425 Plus against DS425+: the published specifications
| TerraMaster F4-425 Plus | Synology DS425+ | |
|---|---|---|
| Processor | Intel N150, quad core (burst to 3.6 GHz); an Intel N95 configuration is also sold | Intel Celeron J4125 |
| Memory | 16GB DDR5, up to 32GB | 2GB DDR4, up to 6GB |
| Drive bays | 4 SATA | 4 SATA |
| Largest drive quoted or listed | 30TB | 24TB |
| M.2 NVMe slots | 3 (PCIe 3.0 x1) | 2 |
| Network ports | 2 x 5GbE | 1 x 1GbE + 1 x 2.5GbE |
| RAID types listed | RAID 0, 1, 5, 6, 10, TRAID, TRAID+ | Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, SHR, SHR-2 |
| Drive policy | No policy stated on its specification page | Its compatibility list names only Synology drives; from DSM 7.3 third-party hard drives and SATA SSDs can build storage pools, and an M.2 drive that is not on the list cannot create a pool or a cache |
What separates the F4-425 Plus and the DS425+
Shared: four SATA bays.
The F4-425 Plus has three M.2 slots and the DS425+ two.
Network ports are 2 x 5GbE on the F4-425 Plus against 1 x 1GbE + 1 x 2.5GbE on the DS425+.
Memory tops out at 32GB on the F4-425 Plus and 6GB on the DS425+.
The F4-425 Plus ships with 16GB of DDR5 and the DS425+ with 2GB of DDR4.
The largest drive the maker quotes or lists is 30TB for the F4-425 Plus and 24TB for the DS425+.
The processors are the Intel N150 and the Intel Celeron J4125.
TerraMaster sells the F4-425 Plus in two configurations, and the listing title says which. Its specification table covers the Intel N150 unit with 16GB of DDR5, and the memory figures here are that unit's. For the Intel N95 unit, TerraMaster's page states 8GB of DDR4, dual 5GbE and three M.2 slots, and gives no memory slot count or limit, so none is stated here for it.
Drive rules for the DS425+: its compatibility list names only Synology drives; from DSM 7.3 third-party hard drives and SATA SSDs can build storage pools, and an M.2 drive that is not on the list cannot create a pool or a cache. TerraMaster's specification page for the F4-425 Plus states no such policy.
Where the figures come from
Each row was read from the maker's own specification page for the model on October 12, 2026. "Not published" means the maker's page gives no figure, so none is stated here. Prices are live Amazon.com listings and change through the day.
Checked on October 12, 2026. Sources: TerraMaster F2-425 specifications; Synology DS225+ technical specifications; TerraMaster F4-425 Plus specifications; Synology DS425+ technical specifications; Synology Knowledge Center: Drive compatibility policies for systems from 2025 (DSM 7.3 and above).
The compared models on Amazon.com today
New listings of the models compared on this page. A bundle sold with drives or accessories says so in its title.
Frequently asked questions
Which takes more memory, the F2-425 or the DS225+?
The F2-425, to 16GB against 6GB.
Which has more M.2 slots, the F4-425 Plus or the DS425+?
The F4-425 Plus, with three against two.
Which has the faster network port, the F4-425 Plus or the DS425+?
The F4-425 Plus: 2 x 5GbE, against 1 x 1GbE + 1 x 2.5GbE.
Which takes more memory, the F4-425 Plus or the DS425+?
The F4-425 Plus, to 32GB against 6GB.