MIO/BB -- SCSI ID's?

[+Larry]

I'm thinking about trying to put two drives in my "shoebox" case -- one for the Black Box and one for the MIO. I would have separate power switches for each drive, but use only one ribbon cable. Since both drives would never be powered at the same time, I presume they could have the same SCSI ID numbers without interfering with each other? What about the termination -- would it still only be at the end of the chain?

 

-Larry

[+kheller2]

Yes, SCSI chains always need to be terminated on *each* end. Are you planning on wiring both BB and MIO to the same chain at the same time? Typically the controller card does it own auto termination, some even supply power down the scsi chain. Also, both scsi controllers would be using the same scsi ID. It is possible if only one controller is powered on at a time it *may* work w/o damaging anything, but I wouldn't recommend it. If you wanted to swap the cable between controllers with only one drive on at a time, what you stated will work.

Edited April 8, 2009 by kheller2

[+Larry]

Yes, SCSI chains always need to be terminated on *each* end. Are you planning on wiring both BB and MIO to the same chain at the same time? Typically the controller card does it own auto termination, some even supply power down the scsi chain. Also, both scsi controllers would be using the same scsi ID. It is possible if only one controller is powered on at a time it *may* work w/o damaging anything, but I wouldn't recommend it. If you wanted to swap the cable between controllers with only one drive on at a time, what you stated will work.

 

 

I was thinking of the following:

 

MIO *OR* BB-------------------------------------HDD1-----------HDD2 (T)

 

(HDD2 would be terminated; HDD1 would not)

 

Only one controller would be attached to the I/O cable at one time -- physical isolation by swapping the controller, but "flip the power switch" to activate the other drive.

 

-Larry

[+kheller2]

That should work. Any reason however, that you don't want to change the scsi ID of the drive?

[+Larry]

Please ignore -- double post.

Edited April 9, 2009 by Larry

[+Larry]

That should work. Any reason however, that you don't want to change the scsi ID of the drive?

 

No, didn't think I'd need to.

 

But as I think more about it, changing the ID's might be good "insurance" that I don't write to the wrong drive, since the MIO writes data inverted as compared to the way my BB is set up.

 

-Larry

Edited April 9, 2009 by Larry