Date: Tue, 26 Nov 2002 17:38:37 -0500 From: Matthias Trevarthan <trevarthan@wingnet.net> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Sony AIT tape position question Message-ID: <200211261738.37803.trevarthan@wingnet.net> In-Reply-To: <20021126223047.GB32468@dan.emsphone.com> References: <200210301441.55643.trevarthan@wingnet.net> <200211261700.46508.trevarthan@wingnet.net> <20021126223047.GB32468@dan.emsphone.com>
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I'll try that. Any idea where I can get 1G of=20 random data? That's a truckload man. :) Thanks. On Tuesday 26 November 2002 17:30, Dan Nelson=20 wrote: > > Try generating 1gb of random data, run a "dd > if=3Drandomdata of=3D/dev/nrsa0 bs=3D1m ; mt rdhpos" > loop until the tape fills up, and then graph > the results. If it's a straight line, you can > safely use the results of rdhpos as a rough > tape capacity indicator. If you were not > writing completely random data, chances are > your tape drive's compresion algorithm was > screwing up your calculations. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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