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[笔记]Oracle与RAID

原创 Linux操作系统 作者:husthxd 时间:2004-12-09 00:00:00 0 删除 编辑

From Metalink.


====================================================================================

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       Avoid            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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ITPUB数据库版块资深版主,对Oracle、PostgreSQL有深入研究。现就职于广州云图数据技术有限公司,系统架构师。

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