Scale and size considerations
This article details the guidance to determine the concurrent TCP connection limit and concurrent web app request limit of a single Connector Appliance at one resource location.
Web and SaaS applications
The minimum recommended size for a Connector Appliance virtual machine is 2 vCPU and 4 GB RAM. For high availability and resiliency, it is recommended to deploy two Connector Appliances.
Deployment guidance: A Connector Appliance of size 2 vCPU, 4 GB memory, and 10 Gbps NIC can support the following:
- Up to 500 web app requests per second (Secure Browse).
- Data transfer throughput rate of up to 1 Gbps.
These numbers were arrived at 90% CPU utilization and 80% of memory usage.
TCP Applications
The minimum recommended size for a Connector Appliance virtual machine is 2 vCPU and 4 GB RAM.
Deployment guidance: A Connector Appliance of size 2 vCPU, 4 GB memory, and 10 Gbps NIC can support the following:
- Up to 50,000 concurrent TCP connections.
- Data transfer throughput rate of up to 1 Gbps.
These numbers were arrived at 90% CPU utilization and 80% of memory usage.
Mixed traffic (web, SaaS, TCP)
Deployment guidance: A Connector Appliance of size 2 vCPU and 4 GB memory can support the following:
- Up to 300 web app requests per second (Secure Browse).
- Up to 10,000 concurrent TCP connections.
- Overall data transfer throughput rate of up to 1 Gbps.
These numbers were arrived at 90% CPU utilization and 80% of memory usage.
Important:
To manage your traffic requirements that exceed the recommended limits of web app requests per second (Secure Browse), concurrent TCP connections or the throughput, the Connector Appliance must be scaled horizontally by adding more Connector Appliances.
Connector notifications
The connector generates a notification once it exceeds 80% CPU utilization over a one-hour sample period. For more information, see Connector notifications.
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