- Description
- Specifications
Secondary NSa 4700 Firewall Unit for Active/Standby High Availability Failover with 24 GbE Ports, 6x SFP+ Expansion, Dual Power Supplies, and Gen 7 SonicOS 7.0
The SonicWall NSa 4700 High Availability unit (02-SSC-8986) is a secondary firewall appliance that pairs with a primary NSa 4700 to create an active/standby failover configuration for enterprise and mid-market network perimeters. When the primary firewall fails or loses connectivity, the HA unit automatically takes over all firewall, VPN, and security functions with no manual intervention, maintaining continuous protection for production traffic. The HA unit is identical hardware to the standard NSa 4700: 24 GbE copper ports, 6 SFP+ expansion slots for 10G connectivity, dual power supplies, and Gen 7 SonicOS 7.0 architecture in a 1U rack-mount form factor.
The HA designation means this unit is licensed specifically as the standby partner in a high availability pair. It operates in passive mode during normal conditions, continuously synchronizing configuration, state tables, and session data from the primary unit, and activates only when the primary goes offline. The NSa 4700 HA provides enterprise-grade redundancy with support for up to 3,000 concurrent VPN tunnels, TLS 1.3 deep packet inspection, and the full Gen 7 security feature set including Capture ATP, RTDMI, and RFDPI, ensuring the failover unit delivers the same level of threat prevention as the primary.
Where the NSa 4700 HA Fits
- Enterprise network perimeters with uptime requirements where the HA pair eliminates the firewall as a single point of failure, automatic failover maintains thousands of concurrent VPN tunnels and security policies without manual intervention, and dual power supplies on each unit provide additional hardware redundancy within the 1U chassis
- Data centers and campus core deployments where the 24 GbE port density and 6 SFP+ expansion slots support high-bandwidth connections to distribution switches and WAN links, the 1U form factor conserves rack space in dense environments, and stateful failover preserves active sessions during switchover
- Regulated industries requiring continuous security coverage where compliance mandates demand uninterrupted firewall protection at the network perimeter, the active/standby configuration provides sub-second failover for financial transactions, patient record access, and other latency-sensitive applications, and TLS 1.3 inspection remains active on the standby unit during failover
What the NSa 4700 HA Delivers
- Active/Standby Failover: Continuously synchronizes configuration, state tables, and session data from the primary NSa 4700. Automatic takeover when the primary unit fails, maintaining VPN tunnels, security policies, and active sessions with minimal disruption to network traffic.
- Identical NSa 4700 Hardware: 24 GbE copper ports (10/100/1000Base-T), 6 SFP+ expansion slots for 10G fiber or copper uplinks, USB for expandable storage, and dual power supplies for hardware-level redundancy. 1U rack-mountable form factor (18.1 x 16.9 x 1.8 inches, 17.20 lb).
- Gen 7 SonicOS 7.0 Platform: Full Gen 7 architecture with TLS 1.3 deep packet inspection, SD-WAN, Capture ATP support, RTDMI/RFDPI threat prevention, and support for up to 3,000 concurrent VPN tunnels. Single-pane-of-glass management for firewalls, switches, and access points.
- Cost-Effective Enterprise Redundancy: HA-licensed unit provides full hardware redundancy at a lower cost than deploying two independently licensed NSa 4700 firewalls. TAA compliant for government procurement of redundant network security infrastructure.
