Date: Sun, 2 Aug 1998 15:47:07 +0200 (CEST) From: Andre Albsmeier <andre.albsmeier@mchp.siemens.de> To: jack@germanium.xtalwind.net (jack) Cc: benedikt@devnull.ruhr.de, bromage@queens.unimelb.edu.au, freebsd-stable@FreeBSD.ORG Subject: Re: CD writers as a backup medium Message-ID: <199808021347.PAA26907@bali.us.tld> In-Reply-To: <Pine.BSF.4.02.9808011923550.13140-100000@germanium.xtalwind.net> from jack at "Aug 1, 98 07:57:23 pm"
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> On 1 Aug 1998, Benedikt Stockebrand wrote: > > > Andrew Bromage <bromage@queens.unimelb.edu.au> writes: > > > > > Just wondered if anyone had thoughts on using a CD writer with > > > FreeBSD-stable as a backup medium. > > > > Writing a CD-ROM on a machine that is doing other things as well is > > bound to cause trouble. Your backups will be plain unreliable. > > My experience indicates that your statements are wrong. I piped > the output of mkisofs to cdrecord in one xterm while doing level > 0 dumps of about 4 gigs of files in another. Halfway through > burning the CD /etc/daily started and called /etc/security with > its `find'. The CD that was produced has been used to install, > or upgrade to, 2.2.7 on three different machines so far. > > I have two 4gig and a 1gig hard drive, the tape drive, the CD > burner, and a CD reader on a single Adaptec 2940UW. As I said in another message I also have no problem writing CDs while using the machine for other things. However, I create the image first but then I burn it with 4x speed while doing a buildworld, running netscape, rc5 and the usual X and shell stuff. All that on a CDR100 with only 256k buffer but of course with rtprio on the cdrecord process. Never god a bad CD and never got a buffer underrun. -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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