Dear Gaurav
Things to do on SAP Server end:
1.Host entries of your Symantec Backup Exec should be maintained as well as Backup Exec Server end.Verify with ping. (Maintained )
2.SAP Host agent installation at SAP server end.(SAP Host agent installation install from Backup Exe server or setup ?)
3.Backup Media Server & Tape configuration as per your Tape Drive LTO2,LTO3.As tape configration depends on LTO type.
4.Need to configure Host agent file with the entry of Backup Exec Server.( How can I create parameter file)
5.Policy Creations to schedule SAP backups and configure Restore methods.
After configuration of Symantec Backup Exec 2010 & Host agent/Client on SAP end verify with test policies.