Such a tool does not exist. Every disk that cannot be identified by AIX is recognised as Other SCSI disk (osdisk) usually. You can use it, no sweat, but you are unlikely to use it with adequate settings. Therefore the disk will be slower than it could be. Some vendors offer special drivers for AIX or at least some ODM entries to facilitate use of their disks by AIX. If you cannot get such type of support you need to find a datasheet for those disks. E.g. with the information about queueing type and queue depth you can configure OEM SCSI disks manually. However to find out what disk it is you probably need to take it off the machine and look at the label.