I spent some time at their forum this morning.
I erased a 200gb folder on my second ext. hard drive, installed Oops!Backup, and my first backup started 5min later. Nice, especially that this is in line with what I've read in reviews, here, etc.
The OopsBackup folder will be compressed (NTFS compression).
Not sure yet how I'll manage the versionning aspect yet. SyncBack allowed me to treat versionning as a completely separated aspect... And I could archive versions on DVDs (instead of just deleting them). Wonder if a similar strategy could be used with Oops!Backup or if I'll need to still use SyncBack to make sure some
older file versions are kept, long (years) after being replaced by newer ones... It happened once that a very old file was deleted... Had to dig 2 years back to find it, and it was there, on a DVD !! (for plain archiving, DVDs are ok. I generally dislike them I must say)
Apart from that, I noticed that RAM usage is on the high side -- a bit too high for my taste, considering that SyncBack would use about 4 MB while resting, and 45 MB while copying big files. It hovers between 140 (resting) and 175 MB (at work) it seems. Yes, I know that unused RAM is wasted RAM, etc. but still... cleverly used RAM is better than unduly used & wasted RAM. Let's hope that it's the first case here. I'm guessing that there's progress to be made in this area. Will see if that becomes a show stopper or not...
[Edited : made my post more readable]