1-
Check
data files path and free space by check DB properties.
F:\DBDATA: 
2-
Drop
current database to be replaced by either:
a-
Right
click on DB and Delete: In case users connected it will give a warning. In case
of any job running please stop it and do delete again. 
b-
Right click and de-attach(It will stop
database and you require to delete the data files manually. In case of users
connected they will be disconnected. You can also move the files and re-attach
to another database kind of cloning). Be sure to uncheck the Drop option since
it will take longer time then delete the files manually.
3-
Start
TSM client and expand tree till you reach the target server. Right panel search
for the target database you want to restore from and select the Full-Backup and
right click select restore to alternate
From below
screen be sure to select the new instance name and exact path and start the
restoration. The most important is to select “Restore to a new database” and
select the target database.
