Re: [opensuse] About Backing Up
- From: "John R. Sowden" <jsowden@xxxxxxxxxxxxxxxxxx>
- Date: Sun, 18 Feb 2007 01:28:02 -0800
On Sat February 17 2007 17:25, Randall R Schulz wrote:
Dennis,We use DVD-RAM drives and media. The media is pricey compared to dvd -r and
On Saturday 17 February 2007 13:46, Dennis J. Tuchler wrote:
I have seen advice on listservs not to back up to a CD ROM. I never
understood why. Why is it a bad idea to use CDROMS as storage media?
For me, at least, CDs per se are too small. DVDs can constitue a
manageable solution for backing up select portions of one's data (but
still not for most whole-system backups). With multisession writing and
rewritable media, you have acceptable _backup_ media, but not a very
good archive solution.
I'm kind of hoping that one of the new DVD formats (HDDVD or Blu-ray)
will prove useful for backup and, perhaps, archiving purposes, but it
remains to be seen if it will become economical (cost of drives and
media) and what sort of longevity and reliability characteristics those
media formats will exhibit.
Separately, does anyone know of Linux software (perhaps a FUSE file
system) that exploits optical drive packet writing? I've seen such
things for Windows (simulating an everyday read/write, random-access
magnetic drive using an optical recorder), though I was always sorry
when I tried them because they seemed to make my system unstable
(though that was probably just bad driver coding).
Dennis J. Tuchler
Randall Schulz
-rw, but it is much more reliable. Double sided (not double layer) media in
a cardridge costs about $7.50 each. There is also now media that does not
require the cartridge, but for backup purposes, the cartridge protects the
media. The life is much longer. Google it. The problem is, so far, I have
not found a Linux program to "format" or "write the filesystem" to the media.
I have to use a windows computer to format the media, then use it. I format
using the FAT32 filesyste, but UDF 1.5 and 2.0 are available.
In case you are not aware, DVD-RAM reads and writes just like a hard drive.
No sequential writes, no ISO files. You can set up directories just like a
HD, but, according to a Panasonic engineer, you cannot set up partitions.
Regarding cost of media/drives, I think we are spoiled. Today, drives and
media are dirt cheap, compared to yesteryear.
Re: archive, I agree with your comment re: dvd-r. Archiving should always be
done on a non-rewritable media. Actually I bo both, backing up my DVD-RAM
media with DVD-R. Years from now, DVD-R drives and formats will still be
arround, but DVD-RAM is not very popular, so it might not survive the test of
time. I have some backed up data on 5 1/4" floppies, 8" floppies, Zip disks,
SparQ cartridges, Colorado Optics tape, and Bernouli cartridges. I abandoned
my Radio Shack TRS-80 Model I cassette tapes on December 31, 2004 (yeah
right!).
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John R. Sowden
AMERICAN SENTRY SYSTEMS, INC.
Residential & Commercial Alarm Service
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- From: Dennis J. Tuchler
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