SonicWALL NSa Series User Manual

Page 18 Selecting a Deployment Scenario
Scenario B: State Sync Pair in NAT/Route Mode
For network installations with two SonicWALL NSA Series
appliances of the same model configured as a stateful
synchronized pair for redundant high-availability networking.
In this scenario, one SonicWALL NSA Series operates as the
primary gateway device and the other SonicWALL NSA Series
is in passive mode. All network connection information is
synchronized between the two devices so that the backup
appliance can seamlessly switch to active mode without
dropping any connections if the primary device loses
connectivity.
Note: Active/Active pair functionality is also available for
high-availability deployments. For more information on
the benefits and setup instruction for Active/Active pair,
see the “SonicOS Active/Active Feature Module” at
<http://www.sonicwall.com/us/support.html>
To set up this scenario, follow the steps covered in the
Initial
Setup and the Configuring a State Sync Pair in NAT/
Route Mode sections. If you have completed setup
procedures in those sections, continue to the Additional
Deployment Configuration
section, on page 37 to complete
configuration.
SonicWALL NSA 1
SonicWALL NSA 2
B
Network Security Appliance
Network Security Appliance
Network Security Appliance
NSA
Local Network
SonicWALL
HA / Failover Pair
Internet
HA Link
NSA_5000_4500_3500_GSG.book Page 18 Wednesday, January 19, 2011 6:21 PM

SonicWALL NSa Series Specifications

General

Maximum Connections	1, 000, 000
VPN Throughput	Up to 1.5 Gbps
Operating System	SonicOS
Form Factor	1U Rackmount
Management	Cloud Management
Security Services	Gateway Anti-Virus, Anti-Spyware, Intrusion Prevention, Application Control
Ports	8x1GE
Power Supply	Redundant power supplies (optional)