Software

This solution will be difficult to manage as a beginner backup admin. Would you consider using a web-based solution that is inexpensive, yet managed? It can even backup Exchange and SQL. These days, there are plenty of good 'set it and forget it' solutions that are enterprise grade. This would be my recommendation.

this may not be helpful but.....

Create a standard image for the PCs and a shared network drive for all users; inform users that only data on the shared drive gets backed up. Done.

Backing up individual PCs over the LAN is slow, prone to error, and a waste of space. Ideally you would want to do both a file backup and an bare-metal image backup of each PC, but all that takes a lot of time, disk space, frustration.

IF you do want to do PC backup, you need a server app like Symantec NetBackup could do the job, and they make an optional 'bare metal restore' agent.

Thankyou so much for your advice

I think we are going with web based solution