NetScaler ADC High Availability Architecture

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About This Architecture

NetScaler ADC VPX 3000 high availability architecture spans two availability zones with active-passive failover. Traffic flows from users through NetScaler Gateway, WAF, and CDN before reaching Load Balancer VIPs with SSL Offload in each AZ's DMZ public subnet. Web servers in application subnets connect to app servers that access Redis cache, primary/standby databases, and replicated file storage across AZ-1 and AZ-2. This multi-AZ design ensures zero downtime during infrastructure failures while maintaining session persistence and data consistency. Fork this diagram on Diagrams.so to customize subnet CIDR ranges, add health check configurations, or model your NetScaler deployment topology.

People also ask

How do I design a high availability NetScaler ADC architecture across multiple availability zones?

Deploy NetScaler VPX 3000 with NetScaler Gateway, WAF, and CDN in front of Load Balancer VIPs across two AZs. Configure SSL Offload in DMZ subnets, replicate file storage and databases between primary and standby instances, and implement monitoring/logging for both application tiers.

NetScaler ADC High Availability Architecture

AutoadvancedNetScalerHigh AvailabilityLoad BalancingMulti-AZWAFCDN
Domain: NetworkingAudience: network architects designing enterprise application delivery controllers
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Created by

February 26, 2026

Updated

February 26, 2026 at 8:15 PM

Type

architecture

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