Synology DS425+: 4 HDDs, 2 SSDs, but with an outdated processor

Key Takeaways

1. The Synology DiskStation DS425+ features an Intel Celeron J4125 processor, which is somewhat outdated.
2. The NAS supports four hard drives and various RAID configurations for optimizing speed, storage, or data safety, but shouldn’t be the sole method for data security.
3. It includes two M.2 slots for SSD caching to improve data transfer speeds, along with two Ethernet ports (one at 2.5Gbit/s and one at 1Gbit/s) and two USB 3.0 ports.
4. The DS425+ has only 2GB of RAM, but memory can be upgraded easily.
5. The NAS is priced at €450 in Germany, but may not be widely available yet; alternatives like the Ugreen NASync DXP4800 Plus are recommended.


Synology has been quite busy lately and has just introduced another new product in addition to the BeeStation Plus and the DS925+. The DiskStation DS425+ is their latest NAS offering, but its performance is not likely to raise the standards much. It features an Intel Celeron J4125, which is considered somewhat outdated. Nevertheless, how well a NAS performs really depends on the specific tasks it’s used for, and it’s not really fair to compare it with ordinary computers. Another downside is that the DS425+ has only 2GB of RAM, but the good news is that you can easily increase the memory.

Drive Support and RAID Configurations

As its name suggests, the new Synology NAS can handle four 2.5-inch or 3.5-inch hard drives. Like usual, it supports various RAID setups, which help in optimizing either speed, storage space, or data safety. However, one should keep in mind that a NAS alone shouldn’t be relied upon as the only method for securing data.

Caching and Connectivity Options

Moreover, the DS425+ features two M.2 slots for compatible SSDs that can be used for caching. This can enhance data transfer speeds by keeping frequently used files on the faster SSD. However, the speed can also be affected by the connectivity options. In this setup, there are two Ethernet ports, but only one supports a higher speed of 2.5Gbit/s, while the other is capped at 1Gbit/s. Additionally, there are two USB 3.0 ports available for connecting external drives or other USB storage devices. Finally, the new Synology NAS is priced at €450 in Germany, although it’s not yet available at many major retailers.

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