This item is brand-new, factory sealed.

Expansion Unit DX525
Seamless capacity expansion for Synology DiskStation
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 NASs DiskStation Manager (DSM), the DX525s 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.Hardware Specifications
Applied Models
Supports creating volumes across different units
25 series:DS1825+, DS1525+, DS925+, DS725+
Notes
To have better performance, we recommend creating storage volumes physically located within the same NAS or Expansion Unit, rather than creating volumes across your NAS and Expansion Unit.Storage
Drive Bays
5
Drive Type
3.5" SATA HDD
2.5" SATA SSD
Hot Swappable Drive
Yes
RAID Management through Synology DSM
Yes
Notes
Compatible drives are mandatory. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.External Ports
Expansion Port
1Power
Power Recovery
Synchronized with the Synology DiskStation
Power Supply Unit / Adapter
90 W
AC Input Power Voltage
100V to 240V AC
Power Frequency
50/60 Hz, Single Phase
Power Consumption
35.37 W (Access)
7.0 W (HDD Hibernation)
British Thermal Unit
120.69 BTU/hr (Access)
24.02 BTU/hr (HDD Hibernation)Temperature
Operating Temperature
0^oC to 40^oC (32^oF to 104^oF)
Storage Temperature
-20^oC to 60^oC (-5^oF to 140^oF)
Operating Humidity
8% to 80% RH
Storage Humidity
5% to 95% RHOthers
System Fan
92 mm x 92 mm x 2 pcs
Noise Level
20.4 dB(A)
Notes
Noise testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two G.R.A.S. Type 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A) Temperature: 24.25-25.75^oC Humidity: 58.2-61.8%Certification
FCC
CE
BSMI
UKCA
EAC
VCCI
RCM
KC
BISEnvironment and Packaging
Environment
RoHS Compliant
Packaging Content
Main Unit X 1
Expansion Cable: USB Type-C X1
Accessory Pack X 1
AC Power Adapter X 1
AC Power Cord X 1
Optional Accessories
Enterprise Series 3.5" SATA HDD: HAT5300 Series
Plus Series 3.5" SATA HDD: HAT3300 Series
Enterprise Series 2.5" SATA SSD: SAT5200 SeriesItem Dimension (L"xW"xH")
NA

Weight
12.79 lbs

Warranty Information
3 years

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