Optimal hardrive speed in my A1200 / 030 RBM busboard

[SimonV]

I am currently building a RBM Towerhawk with the RBM busboard and I can choose between these 3 HDcontrollers:

An Oktagon SCSI controller on the Zorro board
SCSI kit on the BLizzard MKIV 1230
Original IDEcontroller on the A1200 motherboard.

I tested 2 HD drives and their speed with SYSinfo, both drives have FFS as filesystem.

The speeds measured:

Oktagon.device with IBM UW-Scsi HD : +/- 2,1MB/s
scsi.device (OS3.9) with Maxtor 60GB IDE : 2.7MB/s
1230scsi.device : 3.2Mb/s with the before mentioned IBM UW-scsi drive

Can this be right ? Or should I use another app to test the speed ? I also found it strange the internal IDE was faster compared to the oktagon and so little difference with the 1230scsi.

[SimonV]

That's new to me ... how do I change / check that ?

[SimonV]

Is this also possible with the Oktagon ? Or am I limited by the busboard there ?

[SimonV]

Does it matter what filesystem I use ? For the test with Sysinfo ?