Subject: Re: SCSI disk and controllers
To: Robert Elz <kre@munnari.OZ.AU>
From: Rick Kelly <rmk@toad.rmkhome.com>
List: netbsd-users
Date: 05/20/2001 10:51:50
Robert Elz said:

>It is getting hard to find (new) small drives, that's for sure.

The smallest brand new drives seem to be 18 gig. For sparc 4m boxes,
memoryx.com still has 1, 2, and 4 gig SCA drives.

>The Adaptec works (but isn't cheap).  There are others I have seen
>mentioned on the lists as well.

The Qlogin isn't cheap either - $240.

>But you seem to be assuming that an LVD drive won't simply plug in and work
>on an old controller.   Not true - you won't get the LVD advantages of
>course (long cable length, high transfer speed) but LVD drives will work
>on anything except the (old style) differential controllers - you just
>need the right kind of cable, or cable adaptor, to run between your
>controller and the drive.

So the LVD drives require a differential controller or will they work
with a single-ended controller as well?

>That's why all the old interface types are vanishing - it is just as
>cheap (well, almost as cheap) for the manufacturer to stick an LVD
>interface on the drive - and then they get access to the users who want
>that interface, and yet the drive works with just about every other
>scsi bus on the planet.

But my poor, old Sun 3 boxes would probably like something that is a
little bit lower in technology. :-)

-- 
Rick Kelly  rmk@rmkhome.com  www.rmkhome.com