Bill in Co. said:
That's MUCH more like what I am getting, too (using TI for image backups >
to an external USB drive enclosure.
But your figure above, Anna, is more like 0.8 GB/min (close to what I've
been seeing), but NOT anything close to his 5 GB/min.
5 GB/min seems amazing (that would only take 5 minutes to do 25 GB! -
amazing!). He must have a really hi speed computer (and perhaps a 4 or
5 GHz CPU)
Anna continues...
Bill:
The point I've been trying to make in my comments above is that what we
really should be considering is the *total* time expended to complete the
disk-cloning (backup) process. As I have tried to emphasize in my posts re
the Casper 4 program, its chief advantage over other disk-cloning programs
such as Acronis True Image is its capability of carrying out "incremental"
disk-cloning operations - what Casper terms its "SmartClone" technology. And
by so doing the program can complete routine subsequent backups in a
relatively short period of time.
Again, another example...
Over the past weekend, using Casper 4, I cloned the contents of an internal
HDD (about 30 GB of data) to a USB external HDD. This was the first time
that disk was cloned. I didn't record the time expended to complete the
disk-cloning operation but it was somewhere in the neighborhood of 35 or 40
minutes as I recall. In this respect (timewise) it would likely be of little
of no difference with other disk-cloning (or disk-imaging programs).
A few moments ago I again cloned the same drive to the same USBEHD. (During
the two day period I had made various data additions, deletions,
modifications, etc. Nothing too dramatic but changes nevertheless. The total
amount of data on the drive was still about 30 GB).
This time the disk-cloning operation took about three minutes. Repeat, three
minutes. So I suppose one could say that the data transfer rate from the
internal HDD to the USBEHD (in this case) was about 10 GB/min. But, of
course, that wasn't the case. Again, because of this so-called "SmartClone"
capability of Casper 4, the program was apparently able to detect the
changes in the source disk's data since the last disk-cloning operation and
just "clone" those changes to the destination drive. That, of course, is
what accounts for "data transfer" speed in this situation.
Based on my experience with other disk-cloning programs such as ATI, the
subsequent disk-cloning operation in the example above would have taken just
about the same time as the previous disk-cloning operation.
Again, it seems to me that this "incremental cloning" capability of Casper 4
is an enormous advantage for users in that it encourages them to maintain a
routine comprehensive backup program that can be employed on a frequent
basis - knowing that the disk-cloning operation will generally take only a
short period of time to complete. And the straightforwardness & simplicity
of using this program is an added bonus.
Anna