RMAN Backup Location sizing
Hello:
I have scheduled a RMAN backup of three of our development databases ( all 9i ) . The database are about 100 G in size. I wanted to do the following:
1. Weekly full backup
2. Daily incremental backup
I have set the recovery window to a week. RMAN backsups would be stored in a NFS disk. The Question I have is what is the minimum size of the this disk for all the backups to be successful. Currently I am getting Disk out of space errors. Here is how I am calculating the space requirments.
Full backups - 3 x 100 G =300 G
Daily incrementals = 3 x 100M X 6 = 1800 M ( 100 M incremental for each of these databases for 6 days )
So the total space needed would be 302 G in total. Given the recovery window of 7 days do you think that this is sufficient or i have to double the full backup size.
Regards,
Bala