SCSI terminations

hello to all,

I'm having a diffucult time realizing the correct rules in proper SCSI cabling and termination with a lot of internal devices and a few external devices. using an ADAPTEC AHA-2940UW which has i external connector and 1 68pin connector and 1 50 pin connector with automatic termination i think.

I'm trying to connect:
2 x 9.1 IBM Ultrastar 18XP
2 x external 2GB jaz drives
2 x 2GBSeagate Barracuda ST32550W

I'm also using a 50 pin cable with the end having an external connector with a pci slot backplate attached to it, no terminators. but the drives have jumpers for termination.

thanks guys

Quote:

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Originally Posted by dirkpitt

hello to all,

I'm having a diffucult time realizing the correct rules in proper SCSI cabling and termination with a lot of internal devices and a few external devices. using an ADAPTEC AHA-2940UW which has i external connector and 1 68pin connector and 1 50 pin connector with automatic termination i think.

I'm trying to connect:
2 x 9.1 IBM Ultrastar 18XP
2 x external 2GB jaz drives
2 x 2GBSeagate Barracuda ST32550W

I'm also using a 50 pin cable with the end having an external connector with a pci slot backplate attached to it, no terminators. but the drives have jumpers for termination.

thanks guys

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Wow - the wonders of cabling!!

I am not well-versed in this, but in desperations I use this diagram which has kept me on track before. I don't however do much of this assembly work.

HTH

Good Luck

Installing & Using the AHA-2940UW.

Lots of good info there to go through...

thanks lowland, now I see the big picture, hope this works weill try this out.

I've already went through the adaptec manuals, but there are no descriptions regarding the installation for a lot of devices,

thanks guys :D