Can we restore backup for standby from external hard drive with differnet drive labels I am using windows server 2003 and Oracle database 10g R2 and i have taken the backup using RMAN of my primary database in Drive label E. The size of backup is 1.5TB. In my standby database i don't have much space to copy the backup of primary database in standby machine. My standby machine have only space for restore the backup. i have copied the backup files in my external hard drive label G. Now i want to restore my backup using external hard drive label G. 
can i be able to restore it?
please share your experience and documentations.
Yes, you can. The backup entries in the controlfile point to 'E:...', so after restoring the controlfile, you will have to catalog the backup pieces in RMAN by:

catalog start with 'G:\';


After this you can restore the database.