Date: Wed, 7 Nov 2001 20:43:14 -0800 From: Gunnar H Reichert-Weygold <patron1@paganlibrary.com> To: freebsd-questions@FreeBSD.ORG Subject: Re: Backup Tapes - Advise sought Message-ID: <E161h2A-0006mQ-00@raven.mail.pas.earthlink.net> In-Reply-To: <20011107162126.H66293@ns2.wananchi.com> References: <20011107162126.H66293@ns2.wananchi.com>
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DLT drives use a linear format, that is, they run down the tape in one lo= ng=20 track and back again. The technology is owned by one company which licens= es=20 it to selected companies. It has also reached the end of its technologica= l=20 life. There will be one more generation and that's the end. DAT drives use a helical scan. They write diagonally across a tape. The=20 drives are available from quite a number of vendors and the tapes can be=20 purchased from several manufacturers. DAT, though, has also pretty well h= it=20 the end of the road. The newest technology to come to market is LTO, Linear Tape Open. It was=20 developed by Seagate, IBM, and HP. The format is open and virtually anyon= e=20 can license it and produce their own drives and/or media. Part of the=20 specification requires that a tape written by one drive be readable by=20 another manufacturers drive. The first generation drives have a capacity = of=20 about 100GB natively and up to around 200GB with compression. Speed is fr= om=20 10-16 MB per second without compression, depending upon the manufacturer. BTW, I work for Seagate RSS. On Wednesday 07 November 2001 05:21, Odhiambo Washington wrote: > Hi, > > I need to buy a tape drive. Some sales geek has suggested HP Surestore > DAT40 - a DDS-4 tape drive. I've gotten mixed up with this DDS and DLT > stuff. What's the difference? I am not quite familiar with tapes. > > Does someone recommend something else different than the one here? > I also welcome any reasons supporting some particular type of tape driv= e. > > TIA > > > -Wash > > S y s t e m s A d m i n i s t r a t o r --=20 Don't give me that "kinkier than thou" attitude. Above address is an autoresponder! Correct email address: patron1 at paganlibrary dot com Gunnar H Reichert-Weygold http://www.paganlibrary.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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