QFS-CFS or ASM for RAC Deployment in Production ?

Folks

For subsequent RAC Deployment in ver 10gR2, A Banking customer needs to take a 
decision on use of QFS Cluster file system versus ASM?

Prima-facie, How do the 2 compare in terms of Performance, scalability, 
availability, migration, ease of use, backups, need for training etc.

Currently Production Deployment info:-

 *   NON-RAC with Oracle ver 9.2,
 *   Solaris 10.
 *   Database size if 5 TB approx.
 *   Daily peak load of 20,000 Concurrent sessions connecting to the Database 
via Shared Servers (MTS).
 *   Database exists on the default Unix File system (UFS),
 *   Machine - SF25K SUN Server.
 *   Storage Box - Sun Store Edge 9980 V

Any Docs, Links will help.

Cheers & thanks

Vivek


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