![]() > 1 TB HDD, 100 GB of files on it -> around 80 GB on disk image with temporarily needed 180 GB while writing Well, none is keeping you from ignoring warnings. Carbon Copy Cloner gives you a warning before it will start writing to a drive with too less space. Especially if writing to the internal drive with the system on it, you can observe quite funny things happen while you are running out of space. Therefore you'll need to have almost twice the space temporarily available on the drive you're writing to. ![]() Has around 20% to 30% less size, depending on what kind of files are on your source due to different compression ratio for different file types.īeware that a normal disk image is temporarily written with the full size of your files on disk, then another compressed disk image is made of it. Decompression while opening is almost as fast or slow as an uncompressed read only image. Compression while writing always takes some serious amount of time, but is non-destructive to your files. Has the size like 1.) and isn't meant to get modified, although you could convert that image to read/write.ģ.) The compressed disk image (read only) -> Good for archiving as the final disk image is getting a smaller size. > 1 TB HDD, 100 GB of files on it -> little less than 100 GB on disk imageĢ.) Disk image (read only) -> Good for making a fast clone to a disk image like a snapshot that you don't change afterwards. Has the size of the files on the source minus some stuff an average user doesn't need. ![]() Click to expand.You can make clones to different kinds of disk image files with Carbon Copy Cloner (presumably SuperDuper, too)ġ.) The growing disk image (read/write)-> Good for incremental backups as the disk image size has the ability to grow in size.
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