The catch
Synology DiskStation DS1525+
Hardware media transcoding is a weak point.
Side by side
Synology DS1525+ vs Synology DS925+ Compared: 1525+ gives the archive room to grow with an extra internal bay
Quick verdict
Five starting bays, or expansion to fifteen, are the reasons to choose the DS1525+. A smaller four-bay installation is what the DS925+ suits.
Before you buy
Why, and what it costs you
The catch
Synology DiskStation DS925+
No integrated media engine on the CPU means no hardware transcoding.
Synology DiskStation DS1525+
- Why pick it
- Work with big video files
- Run on my 10GbE network
- The catch
- Hardware media transcoding is a weak point.
The DS925+ appears here with the optional DX525 expansion unit. Drives and the DX525 are sold separately.
Synology DiskStation DS925+
- Why pick it
- Keep family photos safe
- Four drives to start
- The catch
- No integrated media engine on the CPU means no hardware transcoding.
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What this page compares
How Synology DS1525+ and Synology DS925+ differ in drive layout, network, processor and best use.
This one comes down to drive layout and network and processor first, then to the limits of your own setup.
Day to day
How each one fits your routine
With many shared folders, the system snapshot limit can be hit first
Imagine sixteen project folders that each keep 200 snapshots. All together that is 3200, which is within DS1525+’s documented system limit and over DS925+’s, even though every folder stays under the shared 256-per-folder ceiling. For that particular retention count, DS1525+ is the one to choose, storage capacity permitting. DS925+ is enough if a leaner policy will do. Under the published per-folder limit, neither can keep every hourly point for fourteen days in one folder.
Where this comes from
16 times 200 gives 3200, which is set against system limits of 4096 and 2048. At one point per hour, fourteen days needs 336, which is above both 256-per-folder limits. How much storage snapshots consume is a separate question.
A very large expanded volume calls for a memory budget too
Should the archive eventually need a single volume bigger than 108TB, Synology’s specification requires 32GB of memory on both models, and neither ships with that much. DS925+ is the pick if its supported expansion count covers your drive plan. DS1525+ is the pick when you need its larger expansion route. Either way, price compatible memory. Drive enclosures alone do not finish that large-volume configuration.
Where this comes from
The DS1525+ comes with 8GB and the DS925+ with 4GB. Each lists 200TB as a maximum single-volume option that requires 32GB. The outcome is still limited by drive compatibility, RAID capacity and separately purchased DX525 hardware.
Which one fits
Pick the situations that sound like you
Keep family photos safe
The library stays protected and still usable when storage is redundant and photos can be reached remotely.
- Synology DiskStation DS1525+
- Depends
- Synology DiskStation DS925+
- Better fit
Keep going after two drives fail
Synology DiskStation DS1525+ lists “5 storage bays” for drive layout, while Synology DiskStation DS925+ lists “4 storage bays”. This describes the hardware or mechanism doing the work. The label alone does not prove faster or better results.
- Synology DiskStation DS1525+
- Better fit
- Synology DiskStation DS925+
- Good
Work with big video files
Editing large video calls for quick networking and a disk layout able to keep up with the load.
- Synology DiskStation DS1525+
- Better fit
- Synology DiskStation DS925+
- Depends
Run on my 10GbE network
If you edit at high throughput, run backups or have several busy users, a 10GbE path matters.
- Synology DiskStation DS1525+
- Better fit
- Synology DiskStation DS925+
- Depends
Four drives to start
With four bays you can use parity and end up with more usable capacity than a two-drive mirror gives.
- Synology DiskStation DS1525+
- Depends
- Synology DiskStation DS925+
- Better fit
Record camera footage
Synology DiskStation DS1525+ lists “10 Gbps network. Best treated as file storage” for network and processor, while Synology DiskStation DS925+ lists “2.5 Gbps network. Best treated as file storage”. This affects what you can connect and how data can move. A higher rating on the label does not guarantee the same real-world result in every setup.
- Synology DiskStation DS1525+
- Similar
- Synology DiskStation DS925+
- Similar
Option A
Synology, DS1525+
Synology DiskStation DS1525+
It offers five SATA bays, dual native 2.5GbE and ECC memory, plus a separate 10GbE mini-module for upgrading the network.
- Best for
- Work with big video files
Facts we checked
- Drive layout: 5 storage bays
- Network and processor: 10 Gbps network. Best treated as file storage
- Best use: store camera recordings and share with a small team
- On the DS1525+, snapshots are allowed at 256 per shared folder and 4096 per system.
Option B
The DS925+ appears here with the optional DX525 expansion unit. Drives and the DX525 are sold separately.
Synology, DS925+
Synology DiskStation DS925+
This is a 4-bay chassis, and 2.5 Gbps is the fastest network path documented for it.
- Best for
- Keep family photos safe
Facts we checked
- Drive layout: 4 storage bays
- Network and processor: 2.5 Gbps network. Best treated as file storage
- Best use: protect family photos and store camera recordings
- Snapshot allowances on the DS925+ are 256 per shared folder and 2048 per system.
Spec by spec
Where they really differ
| Spec | Synology DiskStation DS1525+ | Synology DiskStation DS925+ | In practice |
|---|---|---|---|
| Drive layout | 5 storage bays | 4 storage bays | It names the hardware or mechanism that does the work. A label by itself does not prove faster or better results. |
| Network and processor | 10 Gbps network. Best treated as file storage | 2.5 Gbps network. Best treated as file storage | It bears on what you can connect and how data can move. A higher rating printed on the label is no guarantee of the same real-world result in every setup. |
Trade-offs
What each pick costs you
With Synology DiskStation DS1525+
- You need extra hardware to get 10GbE or additional bays.
With Synology DiskStation DS925+
- Expanding gives you more bays. It does not add 10GbE.
Decision guide
How to decide
Where they really differ
Ryzen V1500B and dual 2.5GbE are common to both.
How the numbers shift things
The DS1525+ reaches fifteen bays from a five-bay start.
The compromise
The DS925+ goes from four bays up to nine.
What this page can’t tell you
- Compatible drives change over time.
- Actual transfer speed hinges on the entire network and the drive array.
- How Plex performs hinges on the exact media format and client.
By the numbers
What the data shows
What we found across the NAS devices we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Synology DiskStation DS1525+ |
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| Synology DiskStation DS925+ |
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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.
Synology DiskStation DS1525+
Work with big video files
See price & reviews on AmazonThe DS925+ appears here with the optional DX525 expansion unit. Drives and the DX525 are sold separately.
Synology DiskStation DS925+
Keep family photos safe
See price & reviews on AmazonEach link opens in a new tab.
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