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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!howland.erols.net!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: Need larger dump tape length/block size for 2GB 4mm DAT Date: 2 Jan 1997 22:32:16 GMT Organization: Private BSD site, Dresden Lines: 25 Message-ID: <5ahd1g$aqp@uriah.heep.sax.de> References: <5ags44$kpf$1@nadine.teleport.com> 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:33468 julie@foss.com (Julie Schneider) wrote: > Here's the command I'm using: > > dump 0udsf 61000 295 /dev/nrst0 /dev/rwd0s1f > > Here are the messages I'm getting: > > Dump: estimated 297737 tape blocks on 3.25 tapes dump 0uBbf 2000000 32 /dev/nrst0 /dev/rwd0s1f This will allow for 2000000 kilobytes of data, and use 32 KB per tape block (which is much more efficient for DAT than the default of 512 bytes only). I think it's also safe to make this number even larger; dump will request a new tape if it reached the end of medium. -- 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. ;-)