Date: Mon, 3 Mar 1997 17:39:32 -0800 (PST) From: Doug White <dwhite@gdi.uoregon.edu> To: Tom Bartol <bartol@salk.edu> Cc: questions@FreeBSD.ORG Subject: Re: Density codes for Exabyte 8505XL Message-ID: <Pine.BSI.3.94.970303173614.20973B-100000@localhost> In-Reply-To: <Pine.BSF.3.95.970303162930.394D-100000@pauling.salk.edu>
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On Mon, 3 Mar 1997, Tom Bartol wrote: > But the modes listed here don't really correspond what I'd expect to see > for a helical scanning tape drive. I have been able to use density > mode X3.202-1991 (hex code 0x14) but I don't whether is the the max > density code for my drive and I don't know what other codes might be > available. Codes 0x13 and 0x15 (which are listed at helical scan density > codes in the mt manpage) don't work on my drive. The dump density/length options don't apply to newer drives very well. Instead, use the B and b options, which specify # blocks and blocksize in kilobytes respectively. We have a Connor 2gb drive and use the following dump commands to make backups over a network. rdump 0uBbf 2000000 10 resnet2.uoregon.edu:/dev/nrst0 / rdump 0uBbf 2000000 10 resnet2.uoregon.edu:/dev/nrst0 /var rdump 0uBbf 2000000 10 resnet2.uoregon.edu:/dev/nrst0 /usr rdump 0uBbf 2000000 10 resnet2.uoregon.edu:/dev/rst0 /usr1 Tune to meet your needs. Excessive shoeshining (back,forth,back,forth) can be solved by adjusting the blocksize. Hope this helps. See dump(8) for further details. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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