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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.mira.net.au!news.netspace.net.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!news.wildstar.net!news.ececs.uc.edu!news.kei.com!nntprelay.mathworks.com!news.mathworks.com!fu-berlin.de!irz401!orion.sax.de!uriah.heep!news From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: S:Experience with Backup-Options for home-use Workstation Date: 17 Jun 1997 22:35:15 GMT Organization: Private BSD site, Dresden Lines: 32 Message-ID: <5o73f3$ja8@uriah.heep.sax.de> References: <m3206bslxu.fsf@torus.cs.tu-berlin.de> <5nm6ph$342@mtinsc03.worldnet.att.net> <5nodhl$bnr$1@csnews.cs.colorado.edu> Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) NNTP-Posting-Host: localhost.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: knews 0.9.6 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:43086 atk@alumni.cs.Colorado.EDU (Alan T Krantz) wrote: > Exe.byte has a low end 8mm dat drive (750 for an external unit) but > I have no idea if it is any good (anyone else know?). Also sony has > some 4mm dat drives. For something like USD 750, you should be able to get a longitudi- nally-recording drive as well. I'm a happy user of the Tandberg TDC4222 (2.5 GB + hardware compression). If you've got the choice, pick them in favour of helical-scan drives (8 mm Exabyte, DAT), since the latter are mechanically way more sensible due to their more complicated mechanics. As to the original question, technologies like Travan or Mini-QIC look one order of magnitude less serious than DLT, QIC (``the real one''), 8 mm, or DAT. Parts of the SCSI command set are often unimplemented (some vendors even choose to omit commands that are mandatory per the standard, so these drive cannot be considered to be SCSI at all), Mini-QIC requires separate formatting, etc. Given the reliability requirements for a backup solution, i wouldn't trust them. I hardly trust DAT already (only by using a set of different tapes, and partially using different backup methods independently). You know Murphy's law: while your backups used to work all the time, even if you're careful to inspect them, you'll notice that all backup tapes are gone just by the time your boot disk went south. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)