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. 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. 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. Specification 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 (See all supported drives) 3.5" SATA HDD 2.5" SATA SSD Hot Swappable Drive* RAID Management through Synology DSM 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 1 Appearance Size (Height x Width x Depth) 166 mm x 230 mm x 223 mm Weight 2.46 kg Power 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) Notes For more information on how power consumption is measured, refer to this article. Temperature Operating Temperature 0°C to 40°C (32°F to 104°F) Storage Temperature -20°C to 60°C (-5°F to 140°F) Relative Humidity 5% to 95% RH Others 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˚C; Humidity: 58.2-61.8% Certification FCC CE BSMI UKCA EAC VCCI RCM KC BIS Warranty 3-year hardware warranty, extendable to 5 years with EW201 Notes Availability varies by region. Before purchasing, please visit the official web pages of EW201/202 and Extended Warranty Plus for a list of eligible regions. The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Environment & 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 Series
