Using Macrium, I get a backup all set to go but I don't see what the size of the image file will be.
I can see the GB to be backed up, but that will be compressed to a smaller file size.
I know about how much space I have on the storage device, and it would be good to know it the image file will fit Before starting the backup.
Chances are its there and I just don't see it......
I don't think you can see it beforehand.
Estimate: 50 or 60 percent of the sum of the occupied space on the partitions contained in the image file.....assuming default medium compression.
High compression doesn't make it much smaller in my experience.
Hello @TV2,
I don't think you can actually get the true uncompressed size as it is a compressed file. It would also depend on what compression rate was set if you changed it from the default.
I use AOMEI Backupper Standard [ FREE ], and the default compression makes the total compressed System Image size about 40% of the actual size.
I hope this helps.
It helps, cause I always think that it's going to be right THERE in front of me and I just don't see it!
Yeah, Acronis does about 40% too. So I guess it is safe to assume that Macrium will too under default settings.
Let's see..... 224.5GB into 160.8GB is..... going to work!
I'm not sitting here wasting my time!
Ugh.
I was sitting there wasting my time!
Just like Acronis, you got to wait to the very end to see that it is not going to fit.
Just like any form of compression, such as sending files to a .zip folder, you cannot predict the final size until you actually try the compression. Some date is more easily compressed, while jpeg photos are already compressed about as much as is possible. How much you can compress the image is highly dependent on the types of files it contains.
Typically, I get this for my 'daily use' machine, where about 20GB of the user files are relatively un-compressible (.jpg photos, .zip archives, etc). The 52GB image is 72% of the 72.16GB that was selected to be backed up.
Whereas on another machine with few if any uncompresible user files I get an image that is 49.2% the size of the data being backed up.
Last edited by Bree; 18 Dec 2020 at 21:33.
I've had much more dramatic results in file-size reduction, using only "Medium" compression. I have a laptop with about 54GB of 256 used, and the backup file size was only about 17GB, easily fitting onto my 32GB thumbdrive. That's a size of about 31% of the original size on disk. On the other hand, I'm having trouble getting results anywhere close to this for my wife's laptop, which has much more of its space taken up by .jpgs and .mp3s that are already compressed. Its used disk space is about twice mine, but a 64GB thumbdrive doesn't even come close. The answer to this question really does hinge on what kind of files are on the imaged drive. You can get a compressed backup file anywhere from about 75% to my 31%.Just like any form of compression, such as sending files to a .zip folder, you cannot predict the final size until you actually try the compression. Some date is more easily compressed, while jpeg photos are already compressed about as much as is possible. How much you can compress the image is highly dependent on the types of files it contains.
Typically, I get this for my 'daily use' machine, where about 20GB of the user files are relatively un-compressible (.jpg photos, .zip archives, etc). The 52GB image is 72% of the 72.16GB that was selected to be backed up.
Whereas on another machine with few if any uncompresible user files I get an image that is 49.2% the size of the data being backed up.
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