Database upgrade - Oracle 10g r2 ,RAC(2 Nodes with ASM) upgrade from HP-UX to RHEL 5.9

Hi All
I am planning to upgrade our RAC database 2 nodes with ASM from HP-UX to RHEL 5.9.
Following is our setup
Current setup:
Oracle Database 10g r2 (10.2.0.5.0) RAC database.
Nodes: 2
Storage: ASM
OS: HP-UX ia64
Database Size: 1.2 TB
New Setup:
Oracle Database 10g r2(10.2.0.5.0) RAC database
Nodes: 2
Storage: ASM
OS: RHEL 5.9 x86 64
Since we are moving from a big endian format to a small endian format(HP-UX to RHEL 5.9) the same ASM cannot be used.
Kindly help me with process and other important documents to be followed.
Thanks.

Hi...
If it was a standlone database concepts like transportable tablespaces, rman would have been convenient.
Since we are using a RAC database with ASM as storage how do we use these techniques specified in NOTE:733205.1
Due to endianness issue we cannot use the same ASM instance.
Along with the new RAC node install a new ASM instance would have to be created.
Kindly help me with migration for RAC with existing ASM to new Hardware
Thanks and Regards

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

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