11gR2 ASM – Inside story – Part4 (ASM Preferred Read Failure Group)

Introduction:
In the previous post of “11g ASM – Inside story – Part3″, we have seen how to to create a datapump dumpset within ASM diskgroup.
In this Part4 of the story, we will see how to configure the ASM instance with a list of preferred disk failure group names to use when accessing ASM disks.
This new 11g parameter is really useful especially for Real Application Clusters (RAC) instances on disks miles apart.
You can configure each instance to be able to read from the closest ASM disk.

Read the complete article here: oracle-class.com