Re: Backing Up Suse 9.1 What is the best method?

From: B Gruff (bbgruff_at_yahoo.co.uk)
Date: 08/15/04 

Date: Sun, 15 Aug 2004 21:57:51 +0100

Karen wrote:

> I find all this disk replication terminology confusing, even after
> researching the various programs. In my mind a disk clone sould be a
> disk copy, but apparently that's not how it works. This is what I've
> come up with:
>
> 1. Disk image = disk snapshot = disk clone
>
> These are essentially backups that can be restored and do not create
> a drive that can actually boot and run programs, correct?
>
> 2. Disk copy actually copies/moves data to another disk that can
> boot and run the copied programs.
>
> Partimage appears to be #1. What programs fall into the #2 category?

Yes, it *is* confusing, isn't it?

Partimage is (1), as you say. It (I think) relies on you restoring
the image to the same place, on the same disk, to a partition the same
size as the original? It makes no change to the MBR?

Partition Magic (and Drive Image) are different.
Partition Magic can copy the entire partition, same size as the
original (a 30GB partition, with 1 GB used takes 30GB)
Drive Image would create a file about 0.6GB for that same partition
(as would partimage, in fact - it too records only used bytes, and
compresses)
Both Partition Magic and Drive Image would change the MBR when
restoring, so both are your type (2)?

To complicate matters, when I tried Drive Image on a Linux partition,
it seemed to form an image of 30GB for a 30GB partition, even though
only about 3GB was in use!

Bill

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