QNAP has just unveiled its latest high-performance storage solution—the ES1686dc R2, a 16-bay SAS 12Gb/s NAS built specifically for mission-critical enterprise environments. This powerhouse is equipped with dual active-active controllers, ensuring high availability (HA), nonstop operation, and blazing-fast performance—ideal for demanding applications like virtualization, file backup, disaster recovery, and more.

Designed to eliminate single points of failure, the ES1686dc R2 comes with redundant controllers and power supplies, so you can replace components without any service interruption. It’s all about reliability, stability, and continuous uptime for business-critical operations.

“The ES1686dc R2 is built to deliver top-tier performance and high-availability storage,” says Waterball Liu, QNAP Product Manager. “With our intuitive QES operating system and advanced features, it’s easier than ever for enterprises to adopt professional-grade, dual-controller storage when uptime truly matters.”

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Key Features You Should Know

Dual-Active Controllers for High Availability
Forget downtime. The ES1686dc R2 uses active-active dual controllers, meaning both can work simultaneously. If one fails, the other keeps your system running without skipping a beat.

QES v2.2 Operating System
The system runs on QNAP’s ZFS-based QES 2.2 OS, known for its reliability and storage efficiency. It now includes Fibre Channel SAN and NFS 4.1 support, giving you more flexibility and speed for your setup.

Advanced Data Protection & Storage Efficiency
Thanks to ZFS, you get inline deduplication and compression, plus self-healing features to prevent data corruption. You can also take near-unlimited snapshots and use SnapSync for super-fast remote backups.

Lightning-Fast Connectivity
Each controller includes four 10GbE SFP+ ports, and you can boost even more with PCIe slots for 10GbE/25GbE cards—perfect for virtualization, video editing, or heavy file transfers.

Virtualization-Ready
Fully compatible with VMware, Microsoft, and Citrix, the ES1686dc R2 supports iSER for accelerated VMware performance. SnapSync works with VMware Site Recovery Manager (SRM) for enterprise-class DR solutions.

Easy Storage Expansion
Need more space? Just swap in larger drives and expand your pool with a few clicks. The intuitive UI even estimates your future capacity so you can plan ahead.

Scale to Petabytes
With QNAP's SAS expansion enclosures, you can scale up to petabyte-level storage. Dual-path connections ensure uninterrupted service—even if a path or controller fails.

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Model Specs at a Glance