On 2012-09-28 17:04 (GMT-0400) Gene Heskett composed:
I have a nearly 30 year old computer that has an aftermarket scsi adapter plugged into it. Unforch the scsi2 drives I have are suffering from stiction and will only start if given a tap sufficient to break the seal between the disks and the heads.
So, what I am looking for is a scsi2 (50 pin) adapter so I can use a more modern sata drive on it.
If you mean to connect an SATA HD to an old SCSI HBA via an adapter, good luck. SATA, PATA and SCSI2 drives are all IDE drives. I doubt any such adaptation would be possible.
Is there such a beast, and if so, where can I buy it in the US?
Exactly what you want to do to make the switch is unclear. If you mean to put a SCSI card in a modern PC so that you can copy from the old SCSI HDs to modern SATA drives, then you need a SCSI host bus adapter compatible with the one in your old computer. If it uses NCR, or Symbios or LSI Logic (e.g. 810, 815, 825, 875), then http://www.ebay.com/itm/Compaq-Symbios-53C875JE-SCSI-Controller-/120260021267?pt=US_Internal_Port_Expansion_Cards&hash=item1c000e4c13 would be one solution.
If you have an Adaptec SBA in the old machine, then you'd need a similarly compatible PCI HBA with an Adaptec chip, such as http://www.ebay.com/itm/Adaptec-Ultra-Wide-SCSI-Card-AHA-2940UW-/160870373189?pt=US_Internal_Port_Expansion_Cards&hash=item25749f1745
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