7600, G3/4 Powerlogic, 45 MHz bus/405 MHz, 1MB backside cache running at 135MHz and I timed a transfer of a 12.5 MB file (16 "on disk") from one of my SCSI HD to another (both on internal bus): 40 seconds. Not much less (30 sec) to copy it to another place on the same HD. This is soooo slow! Nothing special HDs (one is 3G and the other is 2G) and no scsi cards or anything but standard internal bus, I think I read 7200 rpm somewhere once on them...
The 7600 is easily capable of swamping out drives on the internal SCSI-2 Fast bus. That you got such poor performance... could be a number of factors. Mixed modes on the drives. Improper bus termination. Discontiguous data allocation. Poor buffering by the Finder (You didn't mention the OS vers). ...
To really measure your disk-bus performance, you should use a tool made for the job (FWB's benchmarking utility, for example). Just copying files with the Finder isn't going to tell you much.
- Dan.
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