Lem said:
Putting aside the use of removable media, why do you prefer to "clone" a
drive
rather than create an "image" of it? From what I can tell from the Ghost
manuals, "cloning" seems to overwrite the entire destination disk or
partition,
while an "image" appears to use only the space necessary.
For example, suppose I'm backing up a 80 GB drive and I have a 120 GB
USB/Firewire drive. It seems that if I were to clone the 80 GB drive, it
would
use up all of the backup drive (unless I had previously partitioned the
backup
drive). But, if (because my 80 GB drive isn't completely full, and I
elect to
use some compression) the Ghost "image" is say only 35 GB, I could keep
three
images on the backup drive and do a "rotating" backup.
Lem:
My overriding concern -- and more importantly that of my clients -- is to
*always* (or at least *nearly* always) have at hand a fully cloned copy of
one's working HD. A cloned copy that is instantly bootable (we generally
work with removable hard drives in their mobile racks so we have that
capability) or at least a simple installation/configuring of the cloned HD
so that the system is operational in as short a time frame as possible.
Obviously in the case where the user employs a USB external HD as his/her
recipient of the clone, this will necessitate a re:clone of the external
drive's contents back to the internal drive.
We have little or no interest in compressing data. Our experience has taught
us that compression schemes carry too great a potential risk (albeit
admittedly small with modern OSs like XP) for file corruption. Given today's
relatively cheap cost of hard drive capacity we have no interest in that
area. Our exclusive goal is to create a near-failsafe backup system that's
simple to use, reasonably quick to perform, and effective in its results. By
& large we have found using a disk imaging program to carry out
straightforward disk-to-disk cloning meets our objectives.
You give the example of cloning the contents of an 80 GB drive to a 120 GB
drive. You'll still have a 120 GB drive, no? If you've cloned the contents
of your 80 GB drive to the 120 GB one, then the 120 GB drive will still have
40 GB of unused capacity, will it not? Is that a problem? If you feel you're
"wasting" 40 GB, then simply create two or three or whatever partitions on
your 120 GB drive -- one of 80 GB, and the other(s) totaling 40 GB. And just
so there's no misunderstanding about this -- if the contents of your 80 GB
drive total, say 35 GB as in your example, then *that's* the amount of data
that will be cloned to your destination drive. So you're not really "using
up" the total capacity of your destination disk.
Anna