The catch
TerraMaster F4-425
That single network port is capped at 2.5GbE.
Side by side
TerraMaster F4-425 vs UGREEN NASync DXP2800 Compared: SSD apps with two hard drives, or a four-disk RAID archive
Quick verdict
Four SATA disks and RAID 5 fit in the F4-425. The DXP2800 has two SATA bays, yet it adds two M.2 slots and 8GB memory for a compact application server.
Before you buy
Why, and what it costs you
Protected capacity when all drives are 12TB
In this example, F4-425 gives 36TB before formatting and UGREEN NASync DXP2800 gives 12TB. The gap is 24TB before filesystem overhead.
Where this comes from
Suppose each SATA bay holds a supported 12TB disk. A two-bay RAID 1 gives the usable capacity of one disk. With three or more drives, RAID 5 usable TB = (drive count minus 1) × 12. The layout is only an illustration. It is not storage that comes included, and it is not a backup.
The catch
UGREEN NASync DXP2800
Only two SATA bays means limited growth and no parity layouts.
TerraMaster F4-425
- Why pick it
- Protected capacity has to come from four SATA drives
- supplied ram: you want 4GB
- The catch
- That single network port is capped at 2.5GbE.
UGREEN NASync DXP2800
- Why pick it
- A compact server with two M.2 slots is what you want
- supplied ram: you want 8GB
- The catch
- Only two SATA bays means limited growth and no parity layouts.
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What this page compares
Which of F4-425 and DXP2800 fits depends on protected storage, included networking and the exact SSD or application layout you need.
It is hard-drive growth against a smaller server that can take SSDs.
Which one fits
Pick the situations that sound like you
Protected archive built from 12 TB disks filling every internal SATA bay
In this example, RAID 1 covers two disks and RAID 5 covers three or more. F4-425 yields 36TB and UGREEN NASync DXP2800 yields 12TB before formatting. The gap is 24TB before filesystem overhead.
- TerraMaster F4-425
- Better fit
- UGREEN NASync DXP2800
- Good
A workstation already at the speed of the faster included Ethernet port
The ports included run at 2.5GbE and 2.5GbE. Read the 100GB calculation together with the real client speed.
- TerraMaster F4-425
- Similar
- UGREEN NASync DXP2800
- Similar
Multiple local services dividing up the supplied RAM
TerraMaster F4-425 has 4 GB RAM and supports 16 GB, and UGREEN NASync DXP2800 has 8 GB and supports 16 GB. Match the stated application memory requirement to the supplied configuration first, then decide on any upgrade budget. RAM capacity alone cannot establish application speed.
- TerraMaster F4-425
- Depends
- UGREEN NASync DXP2800
- Better fit
An SSD requirement can eat up TerraMaster's capacity advantage
Give two SATA bays in the F4-425 to SSDs and only two are left for HDDs. The DXP2800 can put SSDs in its two M.2 slots instead and keep both SATA bays, depending on the supported pool layout.
- TerraMaster F4-425
- Depends
- UGREEN NASync DXP2800
- Depends
In practice
Differences you will notice
Protected capacity when all drives are 12TB
In this example, F4-425 gives 36TB before formatting and UGREEN NASync DXP2800 gives 12TB. The gap is 24TB before filesystem overhead.
How we worked this out
Suppose each SATA bay holds a supported 12TB disk. A two-bay RAID 1 gives the usable capacity of one disk. With three or more drives, RAID 5 usable TB = (drive count minus 1) × 12. The layout is only an illustration. It is not storage that comes included, and it is not a backup.
100GB moved at the speed ceiling of the included port
At line rate, the minimum is 320 seconds for F4-425 and 320 seconds for UGREEN NASync DXP2800. Real copies take longer. With a 1GbE client the lower bound becomes 800 seconds for both.
How we worked this out
Decimal 100GB × 8 = 800 gigabits. Take the fastest included port rate, 2.5Gbps or 2.5Gbps, and divide 800 by it. Protocol overhead is ignored here only because this is a lower-bound calculation. Optional adapters and aggregated ports are left out.
An SSD requirement can eat up TerraMaster's capacity advantage
Give two SATA bays in the F4-425 to SSDs and only two are left for HDDs. The DXP2800 can put SSDs in its two M.2 slots instead and keep both SATA bays, depending on the supported pool layout.
How we worked this out
F4-425 offers 4 SATA and 0 M.2 positions, so reserving 2 SATA for SSDs leaves 2 for HDDs. DXP2800 offers 2 SATA plus 2 M.2. The calculation is about where devices go. It is not a performance estimate.
Option A
TerraMaster, F4-425
F4-425
Compared with a two-bay mirror, four SATA bays leave a growing archive more RAID layouts to choose from. Having a single 2.5GbE port and 4GB memory keeps the specs aimed at file storage.
- Best for
- A family archive that is growing, on four drives
Facts we checked
- 0 M.2 slots alongside 4 SATA drive bays
- Fastest network port included: 2.5GbE
- Comes with 4GB of RAM, expandable to 16GB
- Intel N5095 processor in a diskless NAS
Option B
UGREEN, DXP2800
UGREEN NASync DXP2800
This is a 2-bay chassis, and 2.5 Gbps is the fastest network path documented for it.
- Best for
- host Plex at home with 4K transcoding
Facts we checked
- Storage comes in a 2-bay chassis.
- The fastest network path documented for it runs at 2.5 Gbps.
- It supports serving media through Plex.
Spec by spec
Where they really differ
| Spec | TerraMaster F4-425 | UGREEN NASync DXP2800 | In practice |
|---|---|---|---|
| SATA drive bays | 4 | 2 | It alters which disk layouts the main enclosure can hold. |
| Supplied RAM | 4GB | 8GB | This figure is the memory already installed, before any upgrade modules are bought. |
| M.2 storage slots | 0 | 2 | Treat SSD cache and storage pools as a separate plan from the SATA archive. |
| Processor | Intel N5095 | Intel N100 | The platform determines the media engines, the application architecture and the concurrency. |
| Software and expansion route | TOS | UGOS Pro | Pick the applications and supported add-ons the job calls for. |
| SATA bays with supported expansion | 4 | 2 | Compatible hardware bought separately, plus a supported pool layout, is what expansion takes. |
Trade-offs
What each pick costs you
With TerraMaster F4-425
- The listing shows no M.2 storage slots, and because the enclosure is diskless you need to budget for drives separately.
With UGREEN NASync DXP2800
- With one network port, there is no second wired path.
Change of plan
When the answer changes
Protected capacity has to come from four SATA drives
Go with TerraMaster F4-425. Four SATA bays are on F4-425. Fill them with four equal 12 TB disks and RAID 5 gives 36 TB before formatting, against 12 TB from the DXP2800's SATA mirror.
A compact server with two M.2 slots is what you want
Go with UGREEN NASync DXP2800. Beside its two SATA bays, DXP2800 has two M.2 positions. A supported SSD mirror can therefore go there and leave both SATA positions free for hard drives.
Decision guide
How to decide
First, pin down the storage layout you need
Four SATA disks and RAID 5 fit in the F4-425. The DXP2800 has two SATA bays, yet it adds two M.2 slots and 8GB memory for a compact application server.
Count what the drive budget allows
Four 12TB disks in the four-bay TerraMaster make a 36TB RAID 5 example, against 12TB from the UGREEN two-drive mirror. A bigger advertised raw maximum is no substitute for this protection calculation.
Look at the client and apps you will really use
A 2.5GbE link is used by both. For a nightly backup from a gigabit desktop, neither has a link-rate advantage. Decide on drive count, applications and the desk space you have.
What this page can’t tell you
- Capacity examples assume equal 12TB drives, counted before formatting, snapshots and filesystem overhead.
- Treat Ethernet calculations as lower bounds, since disk performance, network protocol and other traffic add time.
- Neither application speed nor a VM count follows from memory capacity alone.
By the numbers
What the data shows
What we found across the NAS devices we compare, plus the checked facts behind each finding.
How many fit
Only 8 of the 32 models checked meet every need here: “Four drives to start” and “Keep going after one drive fails”.
8 models fit, out of 32 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “Four drives to start” and “Keep going after one drive fails”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| TerraMaster F4-425 |
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| UGREEN NASync DXP2800 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
TerraMaster F4-425
Protected capacity has to come from four SATA drives
See price & reviews on AmazonUGREEN NASync DXP2800
A compact server with two M.2 slots is what you want
See price & reviews on AmazonEach link opens in a new tab.
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