QNAP High Availability
Maximize service uptime with automatic failover
QNAP High Availability
Ensure 24/7 service continuity with QNAP High Availability — even in the event of hardware failure.
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QNAP High Availability Solution
Flexible, Reliable, Budget-friendly
QNAP End-to-End High Availability — From storage to network
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Reduced TCO
Achieve high availability without expensive proprietary hardware.
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Flexible Deployment
Choose between dual-NAS or dual-controller setups to fit your needs.
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Speed & Stability
Maintain consistent performance and stability at all times.
Active-Active HA
Dual-active controller NAS — High availability storage with optimized performance and capacity
A single chassis integrating dual independent system controllers
- Dual-controller architecture with simultaneous operation for balanced workload distribution.
- Instant failover — if one controller fails, the other takes over immediately for near-zero RPO and business continuity.
- Dual-path SAS interface for seamless connectivity and high reliability.
- Multi-protocol support, including SMB, NFS, and iSCSI.
- Powered by QES for advanced ZFS features, including self-healing, in-line data reduction, and more.
Active-Passive HA
Dual-NAS HA architecture — Ensuring uninterrupted critical business operations
Making high availability accessible for SMBs
- HA cluster with two QNAP NAS units — automatic failover between primary and standby systems.
- SnapSync real-time data synchronization ensures consistent data across both NAS.
- Powered by QuTS hero — a ZFS solution favored by IT professionals for data integrity and resilience.
- High Availability Manager with intuitive setup and system health monitoring
- Cost-effective HA deployment without needing expensive proprietary appliances.
Network HA
Enhance switch-level availability for always-on connectivity
MC-LAG redundancy keeps critical devices online at all times
- Deploy two QNAP L3 Lite switches with MC-LAG to build a resilient network backbone.
- Automatic failover — if one switch fails, the other takes over instantly.
- Uninterrupted NAS access, even if a switch fails.
- Fast path switching minimizes latency and reduces the risk of network disruption.
- Minimizes service downtime with stable throughput and resilient connectivity.
Virtual Machine HA
VM high availability for critical applications
A cost-effective VM HA choice for SMBs — no expensive virtualization platforms required
- No license fees or additional shared storage, reducing deployment and operating costs
- Bidirectional VM protection architecture — two NAS systems act as mutual standby nodes, with flexible HA assignment per VM
- SnapSync real-time synchronization ensures VM data consistency
- Intelligent failover and online switchover ensure continuous VM operation during system maintenance or upgrades
- Natively integrated into the QNAP NAS virtualization environment, eliminating extra deployment and learning overhead
How to choose — Which HA architecture is right for you?
Need help?
QNAP's expert team is ready to assist you in designing a high availability storage infrastructure tailored to your specific needs.
