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Although using multi-initiator SCSI is not recommended, however it is a low cost alternative to all other possible solutions. You have to make sure you understand the concept of SCSI bus termination to continue the setup. The difficulty of using multi-initiator SCSI is the possibility of getting correct SCSI termination even in the event of a cluster disconnection. It is likely multi-initiator SCSI to achieve a low performance due to length of cable and also other factors. you should use external terminators and Y-cables for proper SCSI termination. You should also test the configuration thoroughly by triggering the failover manually through the console with Cluster Manager a couple of times before you system get into production. If you encounter problems, you should go to your BIOS setup of the HBA, adjust the bus speed to a slower speed to get possibly stability. Test has shown a 40MB/sec setup has a higher chance of stability.