Question on mixing SCSI connectors

[rip_1956]

Are there adaptors that will allow scsi disk drives to connect to an adaptor that has different connector?

I have an Adaptec AHA-2940 adaptor. it has a 50 pin internal connector (IDC50) and a 50 pin external adaptor (HD50). The drive I was using with it (a Seagate ST318416N) died. Recently I was given a used IBM Ultrastar DDYS-T36950 37gb drive. It is a LVD/SE style drive with 68 pin connector (HD68).

I don't know a lot about SCSI, but I read somewhere that you can buy different adaptors that will mate different SCSI formats.

Is there such a thing that will allow me to use this IBM drive on the Adaptec adaptor?

[Sterling_Aug]

Yes, look around on the Internet. I found that exact same adapter for my 3 drive RAID5 array with the exact same controller card.

[herosrest]

My bad.

[rip_1956]

So it is possible. That's good to hear.

I googled around for scsi converters and found a few, but they were about $700. Ouch! Maybe I'm not using the correct search criteria.

Sterling, do you remember what brand your device is, or maybe where you bought it?

[Sterling_Aug]

Something like this should work:

http://cgi.ebay.com/SCSI-68-PIN-MALE-to-50-PIN-MALE-ADAPTER-NEW-SCSI-2-3_W0QQitemZ5822156412QQcategoryZ31494QQrdZ1QQcmdZV iewItem

Search around on ebay.

[rip_1956]

I've never seen one of those before. Didn't know there was such a thing. And cheap, too!

Thanks a million, S .

[Peter M]

The caveat is that you need such an adapter to include termination for the upper half of the WideSCSI bus on the drive.

Be aware that by doing this - even if you're doing it right - you'll choke a really nice disk drive to a measly 17 MB/s throughput, which is half its actual performance,

http://www.storagereview.com/articles/200006/20000607DDYS-T18350_2.html

You should rather consider migrating to an Ultra160 controller, e.g. LSI's "U160" low cost model, or its even faster replacement "LSI U320". Keep the Adaptec for your legacy-interfaced SCSI peripherals.