The catch
TerraMaster F4-425 Plus N150 16GB
A 10GbE client cannot link at 10GbE to this chassis, since 5GbE is the fastest port included.
Side by side
TerraMaster F4-425 Plus N150 16GB vs TerraMaster F4-424 Pro 32GB: 424 Pro supplies 32GB for services, and 425 Plus adds network speed
Quick verdict
Dual 5GbE ports and a third M.2 slot are what the F4-425 Plus adds. The F4-424 Pro configuration here supplies 32GB RAM, which suits a workload already planned around that memory budget.
Before you buy
Why, and what it costs you
Protected capacity when all drives are 12TB
In this example, F4-425 Plus N150 16GB comes to 36TB and TerraMaster F4-424 Pro 32GB to 36TB before formatting. Changing chassis leaves protected capacity as it was.
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
TerraMaster F4-424 Pro 32GB
That particular 32GB variation is overkill for basic file storage.
TerraMaster F4-425 Plus N150 16GB
- Why pick it
- Dual 5GbE and a third M.2 slot are required
- supplied ram: you want 16GB
- The catch
- A 10GbE client cannot link at 10GbE to this chassis, since 5GbE is the fastest port included.
TerraMaster F4-424 Pro 32GB
- Why pick it
- Your services already call for 32GB RAM
- supplied ram: you want 32GB
- The catch
- That particular 32GB variation is overkill for basic file storage.
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What this page compares
Which of F4-425 Plus N150 16GB and F4-424 Pro fits depends on protected storage, included networking and the exact SSD or application layout you need.
Pay for the faster network or for the memory supplied for applications.
Which one fits
Pick the situations that sound like you
Protected archive built from 12 TB disks filling every internal SATA bay
This example applies RAID 1 to two disks and RAID 5 to three or more. Before formatting, F4-425 Plus N150 16GB gives 36TB and TerraMaster F4-424 Pro 32GB gives 36TB. Switching chassis does not raise this protected capacity.
- TerraMaster F4-425 Plus N150 16GB
- Similar
- TerraMaster F4-424 Pro 32GB
- Similar
A workstation already at the speed of the faster included Ethernet port
Included ports are rated 5GbE and 2.5GbE. Read the 100GB figure next to the actual client speed.
- TerraMaster F4-425 Plus N150 16GB
- Better fit
- TerraMaster F4-424 Pro 32GB
- Good
Multiple local services dividing up the supplied RAM
TerraMaster F4-425 Plus N150 16GB ships with 16 GB RAM and supports 32 GB, while TerraMaster F4-424 Pro 32GB ships with 32 GB and supports 32 GB. Before you budget for an upgrade, weigh the stated application memory requirement against the supplied configuration. Application speed is not established by RAM capacity alone.
- TerraMaster F4-425 Plus N150 16GB
- Depends
- TerraMaster F4-424 Pro 32GB
- Better fit
Have the supplied RAM handle a 24 GB service allocation
When a workload explicitly allocates 24GB across services, it is 8GB over the supplied 16GB of the F4-425 Plus. The supplied 32GB of the F4-424 Pro leaves 8GB before other overhead. Only an appropriate memory upgrade lets the Plus reach the requirement.
- TerraMaster F4-425 Plus N150 16GB
- Not suitable
- TerraMaster F4-424 Pro 32GB
- Better fit
In practice
Differences you will notice
Protected capacity when all drives are 12TB
In this example, F4-425 Plus N150 16GB comes to 36TB and TerraMaster F4-424 Pro 32GB to 36TB before formatting. Changing chassis leaves protected capacity as it was.
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
The lowest possible time at line rate is 160 seconds for F4-425 Plus N150 16GB and 320 seconds for TerraMaster F4-424 Pro 32GB. Real copies take longer. A 1GbE client pushes the lower bound to 800 seconds for both.
How we worked this out
Start with decimal 100GB × 8 = 800 gigabits. Then divide 800 by the fastest included port rate, 5Gbps or 2.5Gbps. Protocol overhead is left out of this lower-bound calculation alone, and so are optional adapters and aggregated ports.
The first purchase differs once a 24GB allocation is required
When a workload explicitly allocates 24GB across services, it is 8GB over the supplied 16GB of the F4-425 Plus. The supplied 32GB of the F4-424 Pro leaves 8GB before other overhead. Only an appropriate memory upgrade lets the Plus reach the requirement.
How we worked this out
The scenario assumes an explicit 24GB service allocation. 16 minus 24 = negative 8GB, and 32 minus 24 = 8GB. Reserve extra memory for the OS and filesystem cache in the final plan.
Option A
TerraMaster, F4-425 Plus N150 16GB
F4-425 Plus N150 16GB
A bulk array and SSD-backed applications both fit here, thanks to four SATA bays, three M.2 slots and 16GB supplied memory. Dual 5GbE ports are a good match for an upgraded home or small-office network.
- Best for
- An SSD application pool next to a four-drive archive
Facts we checked
- 3 M.2 slots alongside 4 SATA drive bays
- Fastest network port included: 5GbE
- Comes with 16GB of RAM, expandable to 32GB
- Intel N150 processor in a diskless NAS
Option B
TerraMaster, F4-424 Pro
TerraMaster F4-424 Pro 32GB
This is a 4-bay chassis, and 2.5 Gbps is the fastest network path documented for it.
- Best for
- handle 4K transcoding on a four-drive starting setup
Facts we checked
- Storage fits in a 4-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 Plus N150 16GB | TerraMaster F4-424 Pro 32GB | In practice |
|---|---|---|---|
| Fastest included Ethernet port | 5GbE | 2.5GbE | This port rate only helps a transfer if the client, switch and storage keep up. |
| Supplied RAM | 16GB | 32GB | This figure is the memory already installed, before any upgrade modules are bought. |
| M.2 storage slots | 3 | 2 | Treat SSD cache and storage pools as a separate plan from the SATA archive. |
| Processor | Intel N150 | Intel Core i3-N305 | The platform determines the media engines, the application architecture and the concurrency. |
Trade-offs
What each pick costs you
With TerraMaster F4-425 Plus N150 16GB
- What is described here is the N150 16GB listing. Check the N95 and other memory variants on their own. Drives are not included.
With TerraMaster F4-424 Pro 32GB
- 10GbE is not built in.
Change of plan
When the answer changes
Dual 5GbE and a third M.2 slot are required
Go with TerraMaster F4-425 Plus N150 16GB. F4-425 Plus has dual 5 GbE ports and three M.2 slots, whereas F4-424 Pro has 2.5 GbE and two M.2 positions.
Your services already call for 32GB RAM
Go with TerraMaster F4-424 Pro 32GB. F4-424 Pro ships with 32 GB while F4-425 Plus has 16 GB. That means a workload needing more than 16 GB can skip an immediate memory replacement.
Decision guide
How to decide
First, pin down the storage layout you need
Dual 5GbE ports and a third M.2 slot are what the F4-425 Plus adds. The F4-424 Pro configuration here supplies 32GB RAM, which suits a workload already planned around that memory budget.
Count what the drive budget allows
An eight-core i3-N305 sits in the Pro, and this Plus has a quad-core N150. Core counts and RAM are no measured performance result, yet they point to different application budgets.
Look at the client and apps you will really use
The Plus starts at 16GB and supports up to 32GB, while the Pro supplies 32GB from the start. A system that needs 24GB allocated before filesystem cache is spared an immediate memory replacement on the Pro.
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 Plus N150 16GB |
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| TerraMaster F4-424 Pro 32GB |
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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 Plus N150 16GB
Dual 5GbE and a third M.2 slot are required
See price & reviews on AmazonTerraMaster F4-424 Pro 32GB
Your services already call for 32GB RAM
See price & reviews on AmazonEach link opens in a new tab.
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