10g R2 RAC on Solaris 10 with EMC Storage

We are in the process of setting up 3/4 node RAC with the following components:
Oracle 10g R2 RAC
Oracle Clusterware / Sun Cluster / Veritas Cluster
Sun Solaris 10
EMC storage
ASM/Cluster FS
I would appreciate if some one can through some light on:
* ) Veritas cluster / Sun Cluster is must component or Can I use Oracle clusterware ? what are the advantages and disadvantages of using Oracl clusterware compare with varitas cluster or sun cluster
* ) Is cluster filesystem a compulsory component or Can I use ASM instead of Cluster File system.
* ) If I don't use cluster filesystem where to put CRS repository and voting disk ?
* ) What is best option for Oracle_Home, is it shared oracle home or sepereate oracle_home on each node ?
* ) Are there any known risks invovled in using ASM. How is the I/O performance with ASM on EMC with Solaris ? Are there any best practices
* ) Is GigE okay for interconnect or do I need to go for Infiniband ?
* ) Is there any notes on Best practices for the above components
*) Do I need to consider fail over option for NIC's (interconnect and public), if yes, how to do that ?
*) Are there any other risks do I need to consider ?
Thanks
G

Hi,
I see lot of good input. I have done few RAC installs on sun/solaris/emc ...
Here are few things to consider.
* ) Veritas cluster / Sun Cluster is must component or Can I use Oracle clusterware ? what are the advantages and disadvantages of using Oracl clusterware compare with varitas cluster or sun cluster
Just stay with Oracle Clusterware. If there are any issues then you only have to deal with one vendor and there will be no finger pointing. In any case Oracle Clusterware is needed even if you install Veritas/Sun.
* ) Is cluster filesystem a compulsory component or Can I use ASM instead of Cluster File system.
For the database you can use ASM. The only time I have considered a cluster filesystem is if external tables were in use.
When you use ASM you need to partition the disk with 1 meg offset or start at cyclinder 1.
* ) If I don't use cluster filesystem where to put CRS repository and voting disk ?
OCR and Voting Disk go on raw devices.
* ) What is best option for Oracle_Home, is it shared oracle home or sepereate oracle_home on each node ?
Install ORACLE_HOME, ASM_HOME and CRS_HOME locally on each server.
* ) Are there any known risks invovled in using ASM. How is the I/O performance with ASM on EMC with Solaris ? Are there any best practices
http://www.oracle.com/technology/products/database/asm/pdf/asm-on-emc-5_3.pdf
We have always installed 2 HBAs and used powerpath.
* ) Is GigE okay for interconnect or do I need to go for Infiniband ?
For a majority of cases gigE is sufficient.
* ) Is there any notes on Best practices for the above components
Have redundancy at each level.
*) Do I need to consider fail over option for NIC's (interconnect and public), if yes, how to do that ?
You can use IPMP. Use large send/receive buffers. Enable Jumbo Frames.
We had to apply some patches.
5128575 - RAC install of 10.2.0.2 does not update libknlopt.a on all nodes
4769197 - WHILE ONE NODE OF RAC IS DOWN, CONNECTIONS FROM CLIENT HANG
patch 5749953
Thanks
G

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Image: !http://img91.imageshack.us/img91/7448/oracle.png!

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