Are you sure that an updated scsi.device is initiated? Type: version scsi.device full on a cli window to check this.
Edit: I just saw that you are using scsi drives. I don't know if this is still a good advice for scsi drives. Never used one.
You say that the partition becomes corrupted after a crash. What FS are you using? If you are using FFS it worth to try SFS/PFS, although the selection of a FS won't cure this type of stability problems... Perhaps it will only stop corrupting your partition.
