Few hundred MB files which can be configured to have copies on multiple disks. Typical arrangement here is to have 3 disks. These disks can be shared with the control file disks. The archived version of the redo logs used to recover the db in case of failure. Usually kept for 2 or 3 days.
Temporary storage is needed for the temporary table space.
This disk is used for swap space when memory is exceeded and should be highly perform-ant and consequently might be 2 or more disks striped together. The data will be fully backed up on a weekly basis, with daily incrementals. There will be 4 sets of weekly backup tapes, and consequentially, every 5th week the media used 4 weeks prior will be reused. If the database grows to 1.5 TB, the full backup will require will 30 tapes for each backup and the full set of full backup tapes for the entire 4 week cycle will be 120 tapes. A similar rotation will be used for the daily backups.