scsi drive will not start

I inherited an IBM intellistation.  I alway assumed it was running raid 5 because it has 3  17gb scsi ibm drives and windows only showed 34mb in available space.  

This morning the computer would not boot and 2 scsi drives reported that the start request failed.  I moved the drives to prevously unused connectors on the scsi cable and now 2 drives start but the 3rd does not.  

How can I check if the system is actually running raid?  It has an adaptec scsi controller.  If it is not running raid, what is the next step in attempting to recover data from a scsi drive that will not start?  
lovingatxAsked:
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PUNKYCommented:
You can use Adaptec Raid Manager to check the drives. Post back what you find there.
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