If you have numbers from a prototype of the portal with Secure Remote Access, you can use these numbers in the Gateway sizing tool to arrive at more accurate results. You would fill in the following:
Measured CPU Performance. The values used to help calculate the number of Gateway instances include:
Initial Portal Desktop Display, hits per second per CPU
Portal Desktop Reloads, hits per second per CPU
Netlet Applications Block Size. This value specifies the Netlet application byte size. The Netlet dynamically determines the block size based on the application that is used. Block size determined by Netlet for a Telnet is based on the amount of data transferred.
You do not need to specify the Page Configuration and Scalability options if you are using trial deployment numbers.