Storage expansion without downtime
Easily add five additional drive bays to your Synology DiskStation. The DX525 supports both 2.5" and 3.5" SATA drives and features plug-and-play setup and hot-swap capability for uninterrupted operation during capacity expansion.
Dedicated local backup solution
The Synology DX525 provides a dedicated local backup solution for your Synology DiskStation. When configured as a separate volume, it safeguards data on its local disks in case of system failure.
Online volume expansion
Managed through the host NAS's DiskStation Manager (DSM), the DX525's additional bays are immediately available upon connection. On-the-fly volume expansion ensures uninterrupted service and storage expansion on the host.
Performance backed by Synology drives
Designed for Synology systems, Synology drives deliver consistent performance and unmatched reliability for your deployments.
Hard drives designed for Synology
See how Synology hard drives deliver reliability, consistent performance, and simplified system management through deep hardware-software integration.
- Compact in size but massive in performance. Provides sufficient external data storage, with ultra-fast data transfer speeds and configurable modes.
- No need to learn how to install internally, it can be mounted externally
| Brand | |
|---|---|
| Brand | Synology |
| Storage | |
|---|---|
| Number of Solid State Drive I | 0 |
| Number of Hard Drives Install | 0 |
| Number of Hard Drives Support | 5 |
| Hot Swappable Bays | Yes |
| Drive Interface | Serial ATA |
| Networking & Connectivity | |
|---|---|
| Wireless LAN | No |
| USB Ports | |
|---|---|
| Number of USB Ports | 1 |
| Size / Dimensions | |
|---|---|
| Form Factor | External |
| General Features | |
|---|---|
| Cooling Fan | Yes |
| Manufacturer | Synology, Inc |
| Drive Bays | |
|---|---|
| Number of Solid State Drive S | 5 |
| Number of Total Expansion Bays | 5 |
| Number of 2.5"/3.5" Bays | 5 |
| Miscellaneous | |
|---|---|
| Product Name | Expansion Unit DX525 |



