Your statement confuses me, but, I always back up to an image as making a clone is not necessary at all, and it is compressed. Per the faqs:03_SONIC_BLUR wrote:One more thing about Clonezilla. Juan, you might want to add a 4TB external USB HD to your setup to use to create Images of your stuff. It looks like the Clonezilla images are the same size as the data you are backing up, and having one drive with most of your stuff on it with no backup should that drive die is bad. So, if you have 3 TB of stuff, a 4TB USB HD will suffice
I have a 64GB USB Thumb drive I boot from for Clonezilla, and a 1.5TB Internal SATA3 drive I store my backups on. That drive is only used for backups
>>Clonezilla saves and restores only used blocks in the harddisk<<
>> How much space do I need when saving an image ?
This really depends. It depends on the data on a partition, and the compression algorithm you choose. Normally if you choose to use gzip, and the partition is an OS (GNU/Linux, MS Windows) partition, the space required is about 1/3.
E.g. For 45 GB data used on a 100 GB harddrive, you will need about 15 GB space to save the image.<<