<FONT face="Default Sans Serif,Verdana,Arial,Helvetica,sans-serif" size=2><div><font color="#990099">----kwlug-disc-bounces@kwlug.org wrote: -----<br></font>>So far, I have set the card (via the card's BIOS) to disable Domain<br>>Validation (The machine would not get past the SCSI BIOS with this<br>>enabled). I have also set "Wide SCSI Negotiation" to false for all<br>>SCSI<br>>IDs as the tape drive is not a wide device, but the aic79xxx driver<br>>was<br>>attempting to use it as such and throwing parity errors.<br><br>It's been a long time since I've struggled with SCSI issues. I don't recall making significant SCSI BIOS changes in years. Now-a-days it just works.<br><br>I'm getting the feeling you're connecting an old SCSI device to a newer SCSI card. You mentioned the old device is narrow and the host adapter wide.<br><br>SCSI buses require electrical termination in order to have good signal flow. The termination could come from an external terminator plugged directly onto the cable or it could come from a device. Old devices has resistor packs that would plug into the motherboard. Look for rows or 6, 7, 8 or 9 pin (I can't remeber how many) sockets near the connector, there should be three. More recent devices used a dip switch setting and even newer devices could sense the need for termination and auto-terminate. For example your Adaptec card may support auto termination.<br><br>Here's a tutorial that I haven't read: http://www.scsita.org/aboutscsi/SCSI_Termination_Tutorial.html<br><br>Since you are converting from a wide to a narrow bus the 8 unused data lines need termination. The adapter that converts should be terminating those unused data lines. It if isn't this may be a source of problem.<br><br>Also the tape library needs termination. the library should have two SCSI ports on it so that other devices can be connecting serially. Generally speaking devices like that didn't provide internal termination but required that an external terminator be placed on the unised SCSI port. If you don't have a terminator you could get funky and try to termination one of the internal devices but you'd have to know which was at the end of the chain, and that would change based on which external port you used. <br><br>In short check your termination. I have lots of SCSI bits like terminators, adapters and cables lying around that you're welcome to send me a photo of your needs. I'd rather they go to use than throw them away. <br></div></FONT>