From owner-freebsd-hackers Wed Feb 11 17:26:56 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA01432 for hackers-outgoing; Wed, 11 Feb 1998 17:26:56 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from cheops.anu.edu.au (avalon@cheops.anu.edu.au [150.203.76.24]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA01163 for ; Wed, 11 Feb 1998 17:26:22 -0800 (PST) (envelope-from avalon@coombs.anu.edu.au) Message-Id: <199802120126.RAA01163@hub.freebsd.org> Received: by cheops.anu.edu.au (1.37.109.16/16.2) id AA120796694; Thu, 12 Feb 1998 12:24:54 +1100 From: Darren Reed Subject: Re: Sony SDT-1700 Tape won't write 4Gig To: sbabkin@dcn.att.com Date: Thu, 12 Feb 1998 12:24:54 +1100 (EDT) Cc: jfieber@indiana.edu, jbryant@unix.tfs.net, freebsd-hackers@FreeBSD.ORG In-Reply-To: from "sbabkin@dcn.att.com" at Feb 11, 98 03:53:33 pm X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In some mail from sbabkin@dcn.att.com, sie said: > > > > ---------- > > > On Wed, 11 Feb 1998, Ustimenko Semen wrote: > > > > > > > I have got Sony SDT-1700 device, but i can't get it work:( > > > > It should write 4 Gig on one > > > > DDS Cassete. But under 2.2.5-RELEASE write to /dev/rst0 fail > > > > on near 1 Gig. > > > > > > 4G with compression or without? Are you using a DDS-1 or DDS-2 > > tape? > > > > good point! > > > > Type Length Capacity > > -------------------------------------------------------- > > DDS - 60M == 1.3G native > > DDS - 90M == 2.0G native, 4.0G using compression > > > I believe that 90M DDS-2 must be 2.0G native (and HP specified it > in documentation on its DDS-2 drives) while 90M DDS is 1.3G native. > I had opportunity to discover it as failed backup after ICL > changed by warranty a failed DDS-2 drive to DDS drive. No, DDS does give 2.0G for 90m tapes, however, not all DDS drives support 90m tapes. DDS-2 drives should give 1.3G 60m, 2.0G 90m and 4.0G 120m (without compression). To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe hackers" in the body of the message