Checklist before Planning System requirements for Deploying Sharepoint

Questionnaire

=> Access SharePoint sites from Internet (Y/N) If Yes,
No. of Current users who will be accessing SharePoint sites.
No. of Users projected to Access SharePoint sites by next 5 yrs.

=> No. of Current users who will be accessing SharePoint sites. (Intranet)
=> No. of Users projected to Access SharePoint sites by next 5 yrs. (Intranet)

=> Data to be uploaded on the SharePoint sites (in GB/TB)
=> Data to be uploaded on the SharePoint sites (in GB/TB) in next 5 years

=> No. Of Geographical Site locations

=> Requirement of Incoming Email Libraries (Y/N)
=> Requirement of Search Functionality (Y/N)

=> Search Usage (Heavy/Average)
Heavy - Using Customised/Enhanced Search/Federated Search
Heavy - Support for searching external data stores.
Average - Out of the box Search Functionality

=> Use of InfoPath Services and Excel Services (Y/N)
=> Usage of MySites (Y/N)
=> Usage of Business Data Catalog (Y/N)

=> Sites Redundancy/Failover Requirements?
=> Plan to Customize SharePoint Sites (Y/N)

=> Support for Multiple Language (Y/N)

=> Recovery Server Hardware and then restore sites on Production site.

Note: Some questions may not relate exactly to the hardware, but it will depand on performance suggesting to add more WFE servers to the FARM or no