Suggestion for creating the following collection class

Hi,

I am new to the language C#. I need suggestion on create/designing a collection that does the following.

I need a collection that will hold a list of servers. each servers will have a list of categories, (ex. EventLogs, FolderSize > x,# of reboot the past x months, etc)

each categories will contain data specific to that category and is associated to the specific server that the data was corrected on.

I would like to design a collection that reflect this case. if anyone could suggest some idea on how to design the collection. so if a get the name of the server I will be able to get all categories for that server and all the data that is associated to the specific categories.

Thanks.