In order to install Gateway/API Dev Portal/ESM, what parameters needs to consider for sizing. We have gone through installation documents which provides minimum required space but there no much justification on space sizing selection. Like is it depends on load (number of API calls/min?)
The gateway product and the API's you publish does not take much space. What takes the maximum space is the audit logs. You should have a plan to either disable any audit logging or to have audit logging in a differt partion. There are several knowledge documents with support.ca.com which describe how to do this.
Hope it helps
Just to add on to the previous reply from Seenu, I have included a few links regarding auditing.
About Message Auditing - CA API Gateway - 9.1 - CA Technologies Documentation
Configuring and installing the audit record maintenance script
Deleting old audit events from the local Gateway database
Removing audit records from the Gateway database in a multi-node cluster without downtime