SCSI, Terminators Help

[Ancalimon]

First of all let me tell you that I am very unfamiliar with SCSI drives.

I own an A4000T with a SCSI2 interface and a CStormPPC with scsi3.

I had a 20gb ide hdd which blew up a year ago. And since that I had been using my 3.2 gb IDE hdd. The 1gb scsi drive died a few months later I bought this machine. I bought a new 120gb ata100 hdd and connected it to CStormPPC`s SCSI with a SCSIDE converter. It working fastly and properly now. But I haven`t used any terminator on the chain one end of the cable is connected to CStormPPC and on the next empty slot is the hdd. Though sometimes i get a pfs3 error and hdd is unwritable after a reset its ok. Does this happen because i have no terminator on the cable?

I also have a cdrewriter but its on the 4000Ts scsi2 interface. Is it a better idea to use it on the CStormPPC`s SCSI?

Current config is like this:

CStormPPC-----120gb hdd+SCSIDE--empty--empty

should it be like this? :

120gb hdd+scside----CStormPPC----terminator