A bit like Bonzo I clone the C: drive of my main machine to a spare drive either when there is a major windows change (ie do it before and then when it settles and I'm sure is ok) or when I have installed significant new software. Or generally about once a month

Most things I save on a 2Tb external drive. Day to day stuff is either in Documents or Desktop. I back up the bits I want from the 2Tb drive and the local C: drive but just use Robocopy from habit. Ran it today and it takes under a minute if it's up to date. If I back up the whole of Lightroom it takes 17 minutes which I do occasionally but not routinely

@ECHO ********* SECOND MACHINE and TECKNET DOCK NEEDS TO BE ON ********
@ECHO ********* Run As Administrator to back up Lightroom ********
@ECHO ********* Last run May 8 2020 - UPDATE DATE AFTER ********
@ECHO ********* Last CLONE run April 29 2020 - UPDATE DATE AFTER ********
PAUSE
robocopy H:\APPLICATIONS E:\BACKUPfrom2TB\APPLICATIONS /MIR
robocopy H:\DOCUMENTS E:\BACKUPfrom2TB\DOCUMENTS /MIR
robocopy H:\ISOs E:\BACKUPfrom2TB\ISOs /MIR
robocopy H:\MEGA E:\BACKUPfrom2TB\MEGA /MIR
robocopy H:\MIXING_COURSE E:\BACKUPfrom2TB\MIXING_COURSE /MIR
robocopy H:\MUSIC E:\BACKUPfrom2TB\MUSIC /MIR
robocopy H:\REAPER_PROJECTS E:\BACKUPfrom2TB\REAPER_PROJECTS /MIR
net use T: /delete /Y
net use T: \\NAMEOFMYCOMPUTER\backupfrommain
robocopy C:\users\MYUSERNAME\desktop T:\users\desktop /MIR
robocopy C:\users\MYUSERNAME\documents T:\users\documents /MIR
robocopy H:\PICTURES T:\Users\2TBDRIVE\PICTURES /MIR
start /wait notepad.exe "C:\Users\MYUSERNAME\Desktop\BAT files\BackUpAllDrives.bat"
PAUSE