Difference in SAN Disk and RawVolumes

Hi All,
I want to know the difference between SAN Disks and Raw Volumes. What are the main differences with respect to Database.
Also can we use SAN disk (Raid5) to create raw volumn on it and use that in ASM??
We are using oracle database 10gR2 on AIX5.3.

You can perfectly use the raw devices from the SAN, just don't create a file system on the target volumes. When defining the ASM storage, you should choose external redundancy. By default ASM tries to manage redundancy by itself.
~ Madrid

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