Full image backup files much larger than files on disk
I am running TI 2015 (build 6613) on my office laptop to backup the 240 GB SSD. The disk is split in two equally sized partitions of 111 GB. According to Windows Explorer, 155 GB are free -> 56 GB are occupied by files.
Until recently, I was running Win7 and my tib files were around 50-60 GB in size.
After I updated to Win10 the tib files are now 190 GB and consequently, the backup takes much longer.
I checked backup settings more than once; I am doing a "Full" backup with "Normal" compression and it's not running in sector-by-sector mode.
Any idea what could be the reason for this increase?