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From: oracle-l-bounce@freelists.org [mailto:oracle-l-bounce@freelists.org] On Behalf Of Sanjay Mishra
Sent: Friday, July 13, 2007 12:03 PM
To: oracle-l@freelists.org
Subject: Oracle RAC private Interconnect

It is recommended to use two Gigabit Switches for RAC Node Interconnect communication to provide Redundancy and performance. Is there any setup required on beside configuring two interface like eth1 and eth2 and then specifying them in RAC cluster installation PRIVATE Interconnect screen.

 

I am just trying to understand that how the failover or redundancy is achieved if I unplug one of the Cable on one Node. Is it been configured by RAC clusterware or I had to tell something to sysadmin.

 

Also how performance is achieved in using two Switches.

 

I am currently having 10g RAC on sun SOlaris 10 with one Gigabit Switch for QA environment and planning for Production hardware requirements.

 

Also If I use Oracle 10g ASM for Storage and RAW device for OCR and Voting Disk. I am using EMC with Two SAN switches and so  2HBA on each Node. Anybody has any doc for Multipathing with EMC. My concern is that both nodes see the RAW Device LUN as well as ASM luns as same and two HBA should provide the high availability when I will remove one of the HBA

 

 

Thanks

Sanjay

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