SCSI: Does one need a special SCSI LVD adapter, over and above a SCSI card?

SCSI: Does one need a special SCSI LVD adapter, over and above a SCSI card?

Post by Saul Lubki » Mon, 05 Jan 2004 02:16:59

The computer, on my Debian linux home hard-wired five PC Ethernet network,
on which I wish to add a SCSI hard disk for backup purposes, has an

Several SCSI dirves -- 36gig to 50 gig -- are available at Ebay, that seem most

Most are "LVD SCSI" drives; at least one Ebay retailer seems to imply
that this might necessitate the use of some adapter, that he'll sell me as

I suspect that I don't really need this adapter.

Am I right?

P.S. I don't read comp.linux.hardware that often; so a direct email would be
greatly appreciated.

I'll respond, when the matter is cleared up, to the net.

Thanks in advance,


-- Saul

---------- Forwarded message ----------
Date: Fri, 02 Jan 2004 20:15:16 -0700
From: Daryl G. Norton < XXXX@XXXXX.COM >
Subject: Re: Question for seller -- Item #2777732346

It will if you have the correct adapters. I have the higher end adapters
that will make these drives work with non LVD controllers. Most of the
adapters on Ebay are rated low and do not work on both Mac and PC. Mine do
it all. They run 9.95 per adapter with no extra shipping if shipped with
the drive.


Call or email me if you have more questions.

On 01/02/2004 7:53 PM, " XXXX@XXXXX.COM "

SCSI: Does one need a special SCSI LVD adapter, over and above a SCSI card?

Post by salfte » Thu, 15 Jan 2004 08:34:26

Hash: SHA1

In article < XXXX@XXXXX.COM >,

Most (all?) LVD SCSI devices will fall back to SE mode if you use an SE-only
controller and/or SE-only devices on the same bus. Some devices might need
"encouragement" through a force-SE jumper setting. An "LVD-to-SE" adapter
is little more than snake oil.

Until last Thursday, I had a 36GB IBM Ultrastar 73LZX connected to the on-board
SCSI controller on an Intel N440BX. It needed the force-SE jumper for the
computer to see it.

It is possible, though, that the drives you're running across are SCA
drives. These will have a single 80-pin connector on the back instead of
the usual 4-pin power connector and 68- or 50-pin connector. Unless you're
installing the drive in a RAID chassis or other enclosure that supports SCA,
you'll need an adapter that converts from 80 to 68 or 50 pins (68, in your
case) and includes a power connector and jumpers for configuring the drive
(ID, etc.) I use an 80-to-50 adapter on a 4.3GB Seagate Barracuda that's
connected to an Apple IIGS. (It's severe overkill for such a machine, but
the drive was cheap and I won't have to worry about running out of space. :-) )

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