CompuServe Messages

Dom, It's called a 125 Meg drive because that's what the manufacturer calls it. I presume it's because that's how much information can be put on a standard DC600 tape. Longer tapes would provide more, shorter tapes would provide less. I have no idea what the differences might be between your 5150 and my 5125, but I suspect it's because mine was built to AT&T's specifications and yours was built to "generic" specifications. I believe TTR is (well…"was") full of stuff. To the best of my knowledge, the difference between a 6150 tape and a 6250 tape is the formulation of the magnetic media…not the length of the tape. There are no patterns to be "set" in the head other than wear patterns. I am NOT an expert on the differences between the tapes or the drives for that fact. So I could be full of stuff. If you don't have terminator power on a SCSI bus…it doesn't work very well, if at all. The signal lines on a SCSI bus are binary..that is, either ON or OFF. An ON condition is set when the signal line is at 0 volts. An OFF condition is set when the voltage is above 2.5 volts. The OFF condition is set by dropping the terminator power line between a 220 ohm resistor to the signal line and then to a 330 ohm resistor to ground. The ON condition is set when the signal line "sinks" that voltage between the 2 resistors to 0 volts. 5v terminator power—————+ 220 ohm resistor—————–>| signal line———————–+ 330 ohm resistor—————–>| signal ground line—————-+ Without terminator power…the signal lines are 0 v (ON) at all times. Don