the trial/ eval period allows you to enable everything, if you haven't purchased licenses for the functionality you had in the eval period, the functionality will not be available i.e Sharepoint agents, SQL agent, Exchange Agents
I've not heard of any issues with HP teaming, the most common occurance of that error, is where the backup exec remote agent drops the connection this can happen for several reasons one of the more frequent, is tamper protection setting on anti virus...
if you are utilising VSS your snapshotes will be as follows: 1 snapshot for each drive of every server you are CPS'ing during backup operations i.e 5 server with 3 drives means you will get 15 snapshots per day1 snapshot for each drive on...