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microchannel scsi cable adaptors, a sucess story

luckybob

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Feb 3, 2009
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For those familiar with the special scsi cables in IBM microchannel systems, IBM decided it would be an AWESOME idea to use non-standard cable ends for their scsi cards. I'm sure they might have had a reason, but it is moot now. Anyway the fast/wide scsi 2 card has 2 internal connectors and one is a mini 68 pin centronics cable. Same connector on SCA hard drives just 68 pins, not 80. I originally planned to just de-solder the connector and install a standard scsi connector, but the risk/reward was just too great. Long story short I found this cable on ebay: http://www.ebay.com/itm/281717582248 aparently Dell used the cable too for something. Anyway, I got one, cut it in half, crimped on a female end and I was in business! Works FLAWLESS, plus you get 2 adaptors!

So, if you have such a card, and dont have the proper cable, cutting up one of those Dell cables will let you use any standard cable. As shown.

Drive I used was a U320 15,000rpm drive with an sca adaptor. But it works equally well with other drives (I tested like 3) It benchmarks at 15MB/s which is LOADS faster than the 3-4 I was getting with my spock card. I get the feeling it's not going to get any faster, something else is holding it back now

You could say I'm pleased with myself and felt like sharing.

(large images availible here: http://imgur.com/a/znqov )
 

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