From owner-freebsd-questions Tue Sep 1 22:29:35 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id WAA13407 for freebsd-questions-outgoing; Tue, 1 Sep 1998 22:29:35 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id WAA13379 for ; Tue, 1 Sep 1998 22:29:20 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id OAA00664; Wed, 2 Sep 1998 14:57:58 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id OAA09953; Wed, 2 Sep 1998 14:57:38 +0930 (CST) Message-ID: <19980902145738.Y606@freebie.lemis.com> Date: Wed, 2 Sep 1998 14:57:38 +0930 From: Greg Lehey To: Gardner Buchanan , freebsd-questions@FreeBSD.ORG Subject: Re: Sony SDT-7000 SCSI DAT - config questions References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: ; from Gardner Buchanan on Mon, Aug 31, 1998 at 08:13:00PM -0400 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Monday, 31 August 1998 at 20:13:00 -0400, Gardner Buchanan wrote: > I just picked up one of these (from the subject line: Sony SDT-7000 DDS drive) > very cheap, new but with no docs. I have it attached to an ASUS > SC-200 and all seems well enough. I'm not altogether thrilled with > the throughput I get though. There are some little switches on the > bottom and I've got a PDF manual indicating which way to switch them > for this or that UNIX version. Naturally there is no indication if > any particular setting is desirable under FreeBSD 2.2.7. > > So, does anyone else have one of these and can you offer any advise > on these "unix compatibility" switches. Strange. I don't see anything that's different from one UNIX to another. > I'm seeing ~500K/sec throughput dd`ing 20K blocks to/from /dev/null, > but it should be doing >800K. > > Can anyone offer any hints on magic SCSI configuration pages I > should look into? Check whether you're running in compressed or uncompressed mode. Also, I don't think you'll get more than 500 kB/s out of a DDS-1 tape: you'll need DDS-2 tapes for that. The drive recognizes them automatically. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message