Oracle redundancy setup

We run LSF 9 with oracle 10.1 on HPUX. The entire oracle binaries/database is in one filesystem which is mirrored between two sans at different locations. We suffered a data loss last week when the inode table to this filesystem became corrupted due to a possible bug in the HPUX online jfs code. It affected our data files and our archive logs so we were only able to roll forward a few hours from our last backup.

To prevent this we are planning to multiplex our archive logs and online redo logs to a pair of local high speed disks in a HFS filesystem and make the paths optional. Periodically a binary copy of the control file will be written to the disks also.

My questions are:
1) What are some of the other customers using for oracle redundancy? Is anyone else multiplexing arcs/redo logs to another filesystem on another set of disks?

2)What is the benefit of "Backup control file to trace"? Whether I have a trace file or the binary version I still have to recover using "with backup control file until cancel"? Plus with trace I have to run the sql script. I can't just copy it over the restored control files.

Thanks
Mark Meriter hospital