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From: exnirad@brolga.cc.uq.oz.au (Nirad Sharma)
Newsgroups: comp.unix.admin
Subject: Raw char devices + tar file on 1 tape
Message-ID: <1991Apr16.035959.3654@brolga.cc.uq.oz.au>
Date: 16 Apr 91 03:59:59 GMT
Organization: Prentice Computer Centre, The University of Queensland, Australia.
Lines: 18

I wish to contents of 2 raw devices (unmounted portions of the hard disk)
as well as a "tar cf" dump onto 1 tape during night-time backups.  I know
that cpio will do this job for me but I want to use tar for its portability
across systems.  (Recent experiences have led to my doubting cpio's
portability.)

The following steps could be used :
	1.  dd 1st device
	2.  dd 2nd device with seek arg to start into tape
	3.  tar cf - ..... | dd with seek arg

but this would involve the tape continuously rewinding.  I'm interested in
a solution that avoids this.  Is my concern unwarranted ?
-- 
Nirad Sharma  (exnirad@brolga.cc.uq.oz.au)		Phone : (+61 7) 365 7575
Systems Programmer					Fax :	(+61 7) 870 5080
Continuing Education Unit
The University of Queensland.  QLD  4072