Synology 12 Bay Expansion Unit DX1215II

The Synology DX1215II is a 12-bay expansion unit that dramatically increases storage capacity for compatible Synology NAS systems. This rackmount solution supports both 3.5″ and 2.5″ SATA drives, delivering up to 192TB of additional storage when populated with 16TB drives. Key features include hot-swappable drive bays for zero-downtime maintenance, redundant power supplies for enhanced reliability, and seamless integration with existing Synology infrastructure through eSATA connectivity. The unit’s tool-free installation, quiet operation, and energy-efficient design make it ideal for businesses requiring scalable storage growth without replacing their primary NAS investment. Its unique value lies in providing enterprise-grade expansion capabilities at a fraction of the cost of purchasing an entirely new high-capacity NAS system.