请教Oracle11gR2 RAC中的OCR/Voting Disks 是否需要单独的diskgroup

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请教 Oracle 11g R2  RAC中的 OCR/Voting Disks  是否需要单独的 asm的diskgroup 来存放。还是可以放在同 数据文件一样的diskgroup 中。。

如果需要单独存放，一般lun要对应几块物理盘？

谢谢 ！

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oms : RAC: Frequently Asked Questions [ID 220970.1]

With Oracle Grid Infrastructure 11g Release 2, it is recommended to put the OCR and Voting Disks in Oracle ASM, using the same disk group you use for your database data. For the OCR it is also recommended to put another OCR location into a different disk group (typically, the Fast Recovery Area disk group, a.k.a. FRA) to provide additional protection against logical corruption, if available.

Under certain circumstances, one may want to create a dedicated disk group for the Oracle Clusterware files (OCR and Voting Disks), separated from the existing database data containing disk groups. This should not be required, but can be configured. Potential scenarios include, but are not limited to:

Maclean Liu(刘相兵

推荐至少给 5个 1.5 GB左右的的LUN DISK，做high redundancy的 systemdg 只放 ocr 和 votedisk

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Maclean Liu(刘相兵 发表于 2013-1-10 12:36
推荐至少给 5个 1.5 GB左右的的LUN DISK，做high redundancy的 systemdg 只放 ocr 和 votedisk ...

根据 RAC: Frequently Asked Questions [ID 220970.1] 这个文档
中的
How to efficiently recover from a loss of an Oracle ASM disk group containing the Oracle Clusterware files?

Oracle recommends to have two disk groups as a standard deployment scenario: the database data containing disk group (commonly referred to as the DATA disk group) and the backup data containing disk group (commonly referred to as the FRA disk group).In this configuration, the Oracle Voting Files(s) and the first Oracle Cluster Registry (OCR) location should share the same disk group as the Oracle Database data, here the DATA disk group. A second OCR location should be placed into the second disk group, here FRA, using "ocrconfig -add +FRA" as root, while the cluster is running.

好象把ocr与voting 再加放到另一个磁盘组，，这也是个解决 容余的方法

Maclean Liu(刘相兵

vote disk只能在一个diskgroup里，分布在多个asm disk上

ocr可以分布到多个diskgroup

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谢谢