RAVI1.           System, redo and archive locations should be on different disks if possible. 

RAVI2.           System, redo and archive locations should not be on stripped disks. 

RAVI3.           System, redo and archive locations should not be placed along with other files if possible. 

RAVI4.           System, redo and archive locations should be placed on the smallest possible disks. 

RAVI5.           The two redo’s and the archive locations should be on different disks 

RAVI6.           The 3 control files should be on different disks 

RAVI7.           The index and data1 and data2 should be on different disks. (possibly even different raid arrays.) 

RAVI8.           We need to split tablespace into one or more files based on a max file limit that is specified depending on the tablespace using the below table. That is for the index tablespace this limit is 10GB. For temp it is 100MB etc. The reason for this rule is to allow us to exploit many individual disks and spread IO without the need for RAID / striping. 

RAVI9.           We need to allocate the index, data1, data2 starting from the largest disk to the smallest disk in the order specified. 

RAVI10.       The system location must be on one and only one disk.