Sizing of PI & EP Systems

Hi,
Planning to implement PI 7.3 & EP 7.3 in our landscape..we need to size these products & give it to our Implemenattion partner.
When I am going through SAP Quicksizer for PI 7.3 I have been asked to fill :
1. XMLSize(KB)
2. Messages(KB)
But not getting exactly how to know thsee input? Secondly how to size EP 7.3 with a total of 33000 users with 500 being concurrent?
Note : SAP PI integration will provide the ability to link business processes & data between HR ECC6 & Finance/Retail 4.7 systems.

HI,
What is your OS and DB ?
Sizing of PI
1. XMLSize(KB)
2. Messages(KB)
Basis cannot assume the size of above files and Integration team has to provide necessary details. Check with your Legacy and Integration team.
Sizing of EP :-
Sizing tool is the best to provide sizing, if you have enough information. Provide number of Concurrent Users, Average think time in seconds, Number of JAVA Iviews, number od URL IViews. Provide information on necessary Elements (like NW-EP-URL, NW-EP-INT) etc..
Table 2 :-
Active Users A/P - Average or Peak time users
Time Interval - H
Max No. of logins - Your user's count
click on "Calculate Result"
Thanks,
Sravanthi

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