One of our customers use to have a sharepoint enterprise farm 2013, with the following architecture:-
windows 2008 R2 which contain sharepoint on-premises farm 2013.
windows 2008 R2 which contain Sql Server.
Our customer was backup-ing the sharepoint databases on daily basis, while the sharepoint application server was not backup-ed or even tracked. and the application server had a sever damage and they could not restore it. so now our customer have a full backup for all the sharepoint databases including; content database, managed metadata databases, configuration database, etc...
But per my knowledge is that to be able to integrate a new sharepoint farm with existing databases, the farm need to be on the same farm build number + have the same sharepoint patches installed as the source farm... but in our customer case these info (farm build number + patches involved) are not available.
So i have these 2 questions:-
Is there a way from the databases' backups we have to build a new farm which works on these databases?
Now our customer have a valid license for sharepoint and the windows server, so can we open a ticket with Microsoft regarding this? and will Microsoft cover such scenarios? where we need to build a new SharePoint farm which work on existing databases?