Re: [PLUG] CD-R(W) backup tools?

Leonard Rosenthol on 2000年8月21日 08:36:57 -0400 (EDT)


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Re: [PLUG] CD-R(W) backup tools?

At 11:57 AM -0400 8/19/00, Nathan Thompson wrote: 
On Fri, Aug 18, 2000 at 02:09:53PM -0400, Leonard Rosenthol wrote:
 >	Pick any/all of the following reasons that come to mind:


 1) Limited in size
 2) Not spannable
 3) Poor/short shelf-life


Ok. each disk is not huge, so they are somewhat limited in size.
However, I don't understand what you mean by numbers 2 and 3.... Not
spannable? Most of the programs I've come across will span across as
many cds as required. Maybe I don't know what you mean by spannable (I
am a backup newbie :) )..

Spannable means, as others have explained, being able have a single backup "span" across multiple CD's (or any media). You are doing a backup (esp. an incremental one) and you run out of space on the disk, you'd normally want to insert another and continue. Most backup software will NOT do that with CD's - only standard media (tape, floppy, zip, etc.)


As for shelf life, it is my understanding
that a cdr is good for 70 years if stored properly. Tape is no where
even in the same league as that. What am I missing?

CD-R has a longer shelf live than CD-RW, though I'd be surprised if it were 70 years. And, there is definitely the "stored properly" issue which isn't as much a problem with other media.

Don't get me wrong - CD-R/W is GREAT for archiving (I use one myself for just this purpose), but it's not considered to be a viable backup media. (backup in this context meaning your entire disk set on a regular basis).


Leonard
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