I am working on a JBoss Seam web application that is a specialized web shop. After the development phase the shop should now get productive soon. Currently for the first year there are not more than 20 users that will use the shop at the same time. As AS I am using JBoss 4.2.1.GA.
Additionally to the AS there will be only a local MySQL server for the shop application on the host.
What hardware requirements do you think will this need?
Do you think a VServer with about 1GB RAM (that means about 800MB for the AS) is sufficient so the application doesn't slow down?