From owner-freebsd-questions Thu May 16 03:32:24 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id DAA16025 for questions-outgoing; Thu, 16 May 1996 03:32:24 -0700 (PDT) Received: from iworks.InterWorks.org (deischen@iworks.interworks.org [128.255.18.10]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id DAA16020 for ; Thu, 16 May 1996 03:32:22 -0700 (PDT) Received: by iworks.InterWorks.org (1.37.109.8/16.2) id AA16864; Thu, 16 May 1996 05:32:23 -0500 Message-Id: <9605161032.AA16864@iworks.InterWorks.org> Date: Thu, 16 May 1996 05:32:23 -0500 From: "Daniel M. Eischen" To: jamie@inna.net, questions@freebsd.org Subject: Re: HP Tapedrive Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >I have installed an HP C1533A 4mm SCSI DAT drive on my FreeBSD machine, >and am wondering about hp's cool (not) little toggle switches on the >bottom....I need settings for those, if anyone can supply them. mt is >returning totally invalid desity codes for the tape drive, and I really >need to run backups on this machine soon. HP gives settings for sun, >dec, and hp, but not pc...the scsi adapter is an Adaptec 2940UW. Any >help is appreciated. You didn't get the C1533A User's Manual with the drive? It will explain the jumpers that are independent of Sun/HP/DEC/etc settings. There are 8 DIP switches, with switches 1-3 being compression and MRS settings, and switches 4-8 being used to specify drive connectivity and functionality according to host or customer requirements (Sun/HP/DEC/etc). Switches 1 2 On On - Compression enabled at power on, with host control On Off - Compression enalbed at power on, no host control Off Off - Compression disabled at power on, no host control Off On - Compression disabled at power on, with host control Switch 3 On - Media Recognition System (MRS) is disabled. Add DDS tapes will be treated the same, whether they are MRS compliant or not. Off - MRS is active. Non-MRS tapes are treated as if they are write-protected. Dan Eischen deischen@iworks.InterWorks.org P.S. Mine works great under FreeBSD with a 2940W.