• Secure Mobile Access 12.4
• About This Guide
• CMS Configuration
  • Introduction to CMS
    • Overview
    • CMS Deployment Options
    • What’s New in This Release
      • Global Policy Settings
      • CMS Alerts Logging
    • Central Management Server
    • Central Management Console
    • Managed Appliances
    • Licensing CMS
    • Central User Licenses
    • Global Traffic Optimizer
    • FIPS and CMS
    • Getting Started in Five Steps
  • Installing and Configuring the Central Management Server
    • Overview
    • Kernel based Virtual Machine
    • Supported Platforms for CMS with Global HA
    • Hardware Resource Requirements
    • Installation Files
    • Setting Up a CMS
  • Configuring Appliances for Central Management
    • Overview
    • Firmware Compatibility with the CMS
    • Enabling Central Management on SMA Appliance
    • Registering an SMA Appliance with the CMS
    • Previously Configured Appliances
  • Using the Management Console Menus
    • Overview
    • Dashboard
      • Alerts
      • Appliances Pane
      • Appliance Load
      • Central License Usage Pane
      • About Pane
    • Management Server
      • Alerts
        • View Alerts
        • Configure Alerts
        • Notification
      • Configure
        • Central Management Settings
        • CMS Address Pool
        • Licensing
        • Administrators
          • General Settings
        • Network Settings
        • SSL Settings
        • Services
          • Manage SSH settings from CMS
      • Monitor
        • Configure the logging setting for Managed appliances
      • Maintain
    • Managed Appliances
      • Add/Remove
      • Configure
        • Overview
        • Configuring the Managed Appliances
          • Define Policy
          • Synchronize
        • Support multiple policies with CMS and shared licensing
          • Applying authentication servers to specific appliance
          • Applying SMTP configuration service to specific appliance
          • Applying SMS service to specific appliance
          • Applying realms to a subset of appliance
          • Assign rules to a subset of appliances
          • Support multiple GTO services
      • Monitor
        • User Sessions
        • Reports
        • Health
      • Maintain
  • Central User Licensing
    • Overview
    • How Central User Licenses Work
      • Central Spike User Licenses
      • Central Email Licenses
      • Perpetual Pooled Licenses
    • Enabling Central User Licensing
    • Getting Started with Central User Licensing
      • Setting Up CMS to Use Central User Licenses
      • Setting up CMS for Centralized Appliance Configuration and Management
      • Resetting a CMS License
  • Global High Availability
    • High Availability of the VPN Service
    • High Availability of the CMS
    • Disaster Recovery for the VPN Service
  • Alerts and SNMP
    • Overview
    • Pre-Configured Alerts
    • Configuring SNMP
  • Capture Advanced Threat Protection
    • Enabling Capture ATP
    • File Options
    • Web Services
    • Advanced Settings
  • Central FIPS Licensing
• Global High Availablity
  • Introduction to Global HA and GTO
  • Planning GTO Deployment
    • Choosing a Deployment Model
    • Minimizing Configuration Differences
    • GTO Service Names and DNS Delegations
    • Provisioning Certificates
      • Let's Encrypt
      • Adding Certificates to SMA Appliances
      • Generating a Certificate Signing Request (CSR)
      • Importing SSL Certificates
  • Setting up GTO
    • Setting up the CMS and SMA appliances
    • Enabling GTO service for managed appliances with the CMS
    • Setting up a Basic GTO Service
    • Monitoring and Configuring GTO
    • Defining the Central Policy
  • Extending GTO Deployment
    • Enabling Cached Credentials
    • Additional Deployment Notes
• SonicWall Support
  • About This Document

Appliance Load

The Appliance Load pane displays an estimate of the load level of the appliance based on metrics such as CPU, Swap Usage, Bandwidth, memory usage, and the number of users logged into the appliance. For more information, see the Appliances Pane.

The dial for each appliance displays an estimate of how busy the appliance is:

• Green indicates that the appliance is not very busy.
• Yellow is a warning that the appliance is starting to get busy.
• Red indicates that the appliance is busy or has a 100% load; the user experience may degrade.
• Gray indicates that the appliance cannot be reached.

The Appliance load for an appliance is determined by its “load score”.

The primary factor in "load score" is distance to the appliance, the closest appliance taking the highest priority. Distance being equal, appliance "load score" is used to determine the appliance that will likely have the best user experience.

• The load score is a combined metric computed from several usage and performance factors (such as CPU, network, and memory) that affect the performance of an appliance, weighted based on their known impact on the remote access experience of connecting users. For example, high CPU usage does not have a major impact on the Load Score for an appliance, but high network bandwidth usage is more highly weighted when the load score for an appliance is calculated.
• When calculating the load score, the differences in the capabilities of the different SMA appliance models in your CMS cluster are taken into account. For example, an SMA 6200 (rated at 2,000 users) with 200 users is expected will show a higher load score than an SMA 7200 (rated at 10,000 users) with 2000 users.
• The impact of different resources is normalized when calculating the load score. For example, users using a significant amount of CPU resources on one appliance will have less impact on the load score than users using excessive bandwidth on another appliance.
• The load score is used by Global High Availability (HA) to determine the preferred appliance toward which user connections and traffic should be routed. For example, if two appliances are located in the same data center or geographic area, Global HA will prioritize the appliance that has the lower load score.