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Old 21 April 2017, 22:43   #4
grelbfarlk
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Join Date: Dec 2015
Location: USA
Posts: 2,236
With the A4091 and most SCSI-II fast controllers you want to make sure you set Sync in the RDB. You can do this with RDBFlags on Aminet. You might only see about 6MB/s on a basic A4000/A3640. However if you have a 3128 or some other Z3 RAM you should be getting above 7MB/s when the Z3 RAM has highest priority. With an A3000 or some other non crippled accelerator in the A4000 you should see above 8MB/s. If you do all that and are still getting less than 5MB/s you probably have improper termination, it being SCSI-II Fast you will need to use an Active Terminator.
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