SCSI Hard Drive Testing

PREREQUISITE =
This document assumes you are familiar with how Free Geek tests/wipes IDE & SATA HDs.

First triage the drives here SCSI Hard Drive Triage

Overview of the test station

You have an external enclosure for testing up to 12 "80-pin" HDs (A.K.A. "Hot-Swap" or "D" mouth). Also, you have an internal cable & power supply extender with room for up to 4 "68-pin" HDs.

Jumpers

Where IDE HDs are jumpered "Master" or "Slave", SCSI HDs are jumpered numerically "0" thru "15". There will be diagrams on the HD, which is good, because the patterns run from left to right or right to left (just like with IDE HDs).

Drive ID

There will be 4 jumpers, labeled "0 1 2 3" or "1 2 3 4" or "1 2 4 8".

Test Station Repair & Maintenance

This will become a full discussion of hardware inventory for a SCSI HD test station. Mostly this will matter when an internal cable wears out.

Cables

Do not connect the internal & external cables to the same controller card, as this creates the risk of having 1 of 2 drives be invisible because they are jumpered to the same ID on the same channel. It can be done, but it's tricky because there is no standardization RE which connectors are on which channel.