I've been supporting a lot of Oracle databases (not full-time; I'm a programmer 90% of the time) and I just happened to see in the Oracle 19 Linux Installation document that storing Oracle data files on a local file system is not recommended. All the databases I've been supporting have the data on a local file system.
We are setting up a new server that has 5 internal drives; 2 small drives for the operating system, and 3 large (four terabyte) drives. So, seems like I could do what I'm familiar with, set up RAID 5 on the 3 large drives, pointing to /u01. Or, set up ASM on those drives. I played with ASM maybe 10 years ago, so I'm not terribly familiar with it.
For this new server, a data center DBA group will be setting this up and maintaining it. So I'm basically wondering if there are any things I need to be aware of when setting this up with data on ASM. And also, for our existing databases, how important is it to migrate from local Linux file system to ASM.