wrote
Can anyone tell me how to test a harddrive/SCSI adaptor combination for
max. data rates? The hardware I want to test is as follows: 18.21g
Seagate (ST118202LC), 36.4g Fujitsu(MAF3364LC), 73.4G
Seagate(ST173404LCV), and all with an Adaptec AHA-2940U2W SCSI adaptor.

You can use the Windoze Performance Monitor or a 3rd party benchmark software
like SiSoft Sandra.