Improve my backup strategy

I want to know if my current backup strategy is solid or not and if I need to improve something.

Situation: 7 computers and 4 smartphone need their data backed up.

Solution: 1 computer is my main storage server whilst also running a couple other services.

The "server" (thats how I'll call it here) automatically scans each pc every hour or the moment they come online to see if files have changed. If it detect a filechange (add,move,remove,...) it will mirror this over to itself in the designated folder. This is done for all folders that contain important data (not program files, appdata, windows, ... to prevent useless writes). The same goes for phones but those are only backed up when charging (programmed this myself as a check for when to scan and not use battery).

The server houses all data on 1 10tb hdd. It then makes an exact copy (not raid 1) to another 10tb hdd and if a file is removed, moved, changed or what so ever it will keep an image off it on another 6tb drive.

Then the second 10 tb drive gets uploaded to a online cloud that 1 year file history and the 6tb drive too but this one has a lower priority.

I also make a disk image every 2 weeks of my computer so that if it has an issue I can return to it. This does not get uploaded to the cloud and is done manually by me on a external ssd.

Would this prevent data loss? (of course data made on that day itself will probably be lost but slightly older data should be fine)

 


It got tested about a week ago with a laptop getting smashed.

The server runs windows server 2008 since I need it for certain features but everything else runs on a debian vm.
 
I compliment you on a very thorough, well-thought-out, well-run backup routine!!

"... laptop getting smashed..." What and how much did it drink? Anyway, on to a serious question: Did this setup ever get hit with ransom-ware? If yes, how did you deal with it? If no, have you prepared a worst-case scenario recovery plan, just in case?

Again, your backup routine is one of the best I've come across :)
 


In case of ransomware there is a pc in the attic that is on a auto schedule of turning on every week and backs up the most important folders (the old file server).

The laptop got smashed because a classmate thought it would be funny to throw my bag and it fell out of the window. He tought my lappy was on the desk but it was my neighbor who happens to have a very similar looking dell. So yeah he had to pay me and I lost the data of that 5 days since I never turned it on at home. After getting a new one and about 3 hours of waiting it was like almost nothing changed.
 


My dell e6230 has a metal frame and since it was a 3 story drop to concrete it pierced through the ssd. I wasn't too happy about it but he was a good sport and bought me a excellent quality used one + new ssd to replace it. I just was like dude wtf quickly went downstairs and rip laptop. The i5 3350m did still work tho and was a nice upgrade for another ivy bridge pentium laptop 😀.