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SCSI Questions

D

Decker87

Limp Gawd
Joined
Mar 24, 2005
Messages
415
Few questions about scsi:

1. SCSI Hard Drives can be mounted upside-down, correct? Will there be a decrease in performance?

2. It seems all my scsi hard drives have 80-pin connections (for example the ST318451LC from seagate), yet I can't seem to find any cables with this pin arrangement for U160. I have two adapter cards and both of them have 68-pin connections. What should I be looking for?

3. Anyone ever made a hard drive rack out of cardboard? I am on a low-budget here, and I have begun making one. Ironically, I'm trying scsi because it's cheap - I got 7 drives and two PCI cards, all for free.
 
SCSI drives can generally be mounted in any orientation without ill effects. That being said, however, check the documentation for the specific model you are using.

80-pin connectors are used for hard drives in a hot-swap enclosure environment. In addition to the data and control signals, there are also signals for power and ID selection in the 80-pin connector. There is no such thing as an 80-pin cable. What you'll need to look for is an 68-80 pin converter. This will include the 68-pin port for the SCSI cable, a Molex connector for power, and a jumper block for setting the SCSI ID. You'll need one of these adapters for each SCSI target device.

Actually, I have made a hard drive rack out of cardboard. :) There were lots of fans involved and I had a backplane (that didn't have an associated enclosure!) to connect the drives to. This was only for a temporary test, and I certainly would not recommend this as a reliable long-term solution.
 
Do you have pics of your rack? (your hard drive rack, perv) I'm designing mine now, helluva lot more fun than buying one.

Also, thanks for the info on the 80-pin interface. Do you know of an inexpensive place to buy those adapters in bulk? I need about 10 :confused:
 
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