Hi,
I'm looking for a replacement for my Windows 10. Does Zorin contains a snapshot feature? Can it be used when updates fail and the system crashes?
Thank you.
Tim
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Welcome to the forum!
By default Zorin should come with the Backups application, which can take backups of certain files and folders that you select, and back them up to another location for you (depending on how often you want those backups to occur).
As for actual "snapshots", by default there aren't any applications installed that do what you're looking for. You can easily install some, however you'd want to look through some of the options, as some that I used to use (such as Timeshift) used to be fairly well regarded, but appears to have maybe gotten a little worse over time. Some others use something like Clonezilla to take a literal whole image of your drive and have that on standby for whenever something bad may occur.
Hopefully some other users chime in here and let you know what they like to use and how they use it 
. As for myself, I just backup the individual files I need backed up, and if my system were to crash and burn tonight, I can easily install Linux again in realistically about 10 minutes, and have all my stuff ready to go again.
How so? 
I don't use it myself, but I haven't noticed many issues reported here about it. There are some threads created every now and then due to the disk running low on space, since snapshots can take up quite a bit of it, but this is a common issue.
When using tools like Timeshift, it's important to understand the difference between "backup" and "snapshot":
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Snapshot is an incremental record of what changes have been made to a file over a period of time. This information is used to retrace the changes back to their original state.
The intended use of snapshots are to quickly restore system files that may change as a result of an update gone wrong, for example.
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A backup is a copy of a file, that serves as an actual replacement. You should use them for personal files that can be very large in size and change frequently, for things like accidental deletion, moving on to another computer, fresh install, etc.
The tricky thing with Timeshift is that the more snapshots you have, the more space they'll take. It's best to be pragmatic and have only a few so that you can have a "safety net" against bad updates, for example.
I guess that is derived from some users setting too frequent Timeshift snapshots and filling their drive unnoticed. Although that is not a fault of Timeshift, there should perhaps be a health warning about excessive disk use. I don't use Timeshift, as I have a very small capacity HDD.
Doesn't make Timeshift Snapshots only in Combination with btrfs?
The thought process on it getting "worse" was simply seeing how many people were trying to use a snapshot that it had made but it had failed for insert reasons here. Some were related to space, others for other reasons, but a tool that might not function when you need it to work, isn't exactly the best imo. For me it would still work fine, but I've seen a lot more reports over time of it potentially not working for various reason.
True that, especially when you need it the most... my only experience with something similar is with snapper while I was using OpenSUSE Tumbleweed. It worked quite well, and since it used BTRFS the restoring was nearly instantaneous.
It works best on BTRFS because the file system has those capabilities built-in, which makes it very fast. Otherwise, it relies on working with rsync to make the snapshots.
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