Below some question audit checklist for backup process:
What SLAs are required for this server?
What is the role of this server? The role will have a direct impact on the backup options and requirements for it, and will directly feed into the remaining questions to be considered for servers. Sample server roles might include production, development, test, and quality assurance (QA).
Are there any special backup handling requirements for applications on the server?
Are there any special backup handling requirements for data on the server?
What times can the server be backed up?
What times are backups not allowed to occur?
What types of backups should this server receive? At minimum, most organizations will need to evaluate the necessity of the following:
Daily: What rotation between fulls, differentials, and incrementals are required?