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Date:      Sun, 6 Feb 2000 16:02:33 +0800 (WST)
From:      unclemib <unclemib@gryphon.itssa.curtin.edu.au>
To:        dlh@xtra.co.nz, freebsd-questions@FreeBSD.ORG
Subject:   Re: SCSI Drives
Message-ID:  <200002060802.QAA45832@gryphon.itssa.curtin.edu.au>
In-Reply-To: <085101bf7026$1827e880$0a00a8c0@p400>

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what make / model hard drives ?
what kind of scsi controller ? 1520? 1540? 2940?

> Alternatively if I put it on the SCSI bus how can I use it as a second HDD?

jumper the second hard drive with a different SCSI id (should have a row of
jumpers on the disk labeled A0,A1,A2 or E0,E1,E2 or somesuch - see the manuf
web page ps: dont pick an id like 7 (all ones usually reserved for the controller))

take care how you set up the SCSI buss (I assume your card and current SCSI disk are
correctly terminated - remove the termination /->on the new disk<-/ and place it between
the existing disk and controller ps: adding SCSI is kindof like setting up a coax
network in that you have to worry about the correct termination of cabling at both
ends. 

I would then just go back to /stand/sysinstall to partition etc the new disk.

> Ideally I'd like to mirror the first drive to it, and use this as a =
> backup  drive.  I cannot find any documentation about this.  Can this be =
> done with FreeBSD software?  Any directions or instructions?

Why mirror the whole disk? - i've heard vinum is used here (I have yet to play with it)
- ccd's (see ccdconfig) are working fine for me currently ( I have similar hardware
with 1x1.5G IDE and 3x512M SCSI-2's on an Adaptec 2940 card - the SCSI's are setup
with 3 swap partitions and some ccd's holding /var and /usr )

		Hope this helps
					Regards Richard



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