SCSI Pin Interface Difference

[SoldatRU]

Can someone tell me what's the difference between a 80 pin interface Seagate Cheetah X15 and a 68 pin interface one? Is there a difference in performance?

 

[Lord Evermore]

So much typing.

Hard to find, I know.

Ouchy.

As for performance, well, if you install an LVD drive on a non-LVD controller, at best it won't work, at worst you lose hardware. If you put an Ultra SCSI drive on a FastSCSI connection, you just get FastSCSI speeds.

 

[bockie]

First of all, as Lord Evermore has subtly said, www.google.com is your friend.

The links provided give valuable info. Basically the difference between a 68 pin & 80 pin connection is that the 80 pin connection is meant for use with Hot Swap SCSI Backplanes that are typically on found in high end servers and disk arrays. A 68 pin drive has a separate power header (the four pin molex connector you see in a pc case) whereas the 80 pin receives it's power through the cable/connector.

I would like to add that you can run a LVD (low voltage differential) drive either a LVD or SE (single ended) scsi card with no problems.

Check out the following links for more SCSI information, specifically regarding LVD & SE interoperability...

http://scsifaq.paralan.com/index.html

http://www.storagesearch.com/lvdart.html