简言之：
1 控制文件放在 RAID 5
2 在线重做日志文件、归档文件、临时文件放在 RAID 1
3 数据文件放在 RAID 0+1
参考：I/O Tuning with Different RAID Configurations [ID 30286.1]
Swap space can be used on RAID devices without affecting Oracle.
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RAID Type of RAID Control Database Redo Log Archive Log
File File File File
====================================================================================
0 Striping Avoid* OK* Avoid* Avoid*
------------------------------------------------------------------------------------
1 Shadowing OK OK Recommended Recommended
------------------------------------------------------------------------------------
0+1 Striping + OK Recommended OK Avoid
Shadowing (1)
------------------------------------------------------------------------------------
3 Striping with OK Avoid Avoid Avoid
Static Parity (2)
------------------------------------------------------------------------------------
5 Striping with OK Avoid Avoid Avoid
Rotating Parity (2)
------------------------------------------------------------------------------------
* RAID 0 does not provide any protection against failures. It requires a strong backup
strategy.
(1) RAID 0+1 is recommended for database files because this avoids hot spots and gives
the best possible performance during a disk failure. The disadvantage of RAID 0+1
is that it is a costly configuration.
(2) When heavy write operation involves this datafile
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