Easily add 12 bays to your DiskStation

With its 12-bay desktop form factor, the DX1215II provides generous storage expansion for Synology DiskStation1 whenever needed with minimal impact on the deployment footprint.

Online volume and storage expansion

Add a new volume to your storage, or seamlessly expand RAID volumes on Synology DiskStation without reformatting drives with online volume expansion through DiskStation Manager (DSM) to minimize service disruptions.

Backed by Synology drives

Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.

Simple setup and management

Plug-and-play design makes adding the DX1215II to an existing DiskStation simple. Unified drive management through DSM ensures health monitoring, storage allocation, and maintenance tasks are centralized and easily accessible to administrators.

5-year warranty

At Synology, we are committed to product innovation and quality. Synology guarantees a robust and reliable data management experience with a 5-year limited warranty,3 providing responsive technical support and hardware replacement services to maximize your return on investment.

Synology Replacement Service (SRS)

SRS provides free advance replacement units as early as the next business day in selected regions, maximizing the service uptime for your mission-critical storage and ensuring your business continuity.

• Expansion Unit DX1215II
• 1 x User's Guide
• 1 x Accessory Pack
• 1 x AC Power Cord
• 1 x Expansion Cable: Infiniband

• DS3615xs
• DS3612xs
• DS3611xs
• DS2015xs
• DS2413+