Hi,
There are only a few best practices which you'll find over here:
https://learn.microsoft.com/en-us/azure/backup/backup-afs#best-practices
General backup best practices is to backup frequently and regularly, and consider the backup retention.
When you say file share, I assume you mean Azure File Share? There are the following limitations on backup scheduling:
- You can back up Windows Server or Windows machines up to three times a day. You can set the scheduling policy to daily or weekly schedules.
- You can back up DPM up to twice a day. You can set the scheduling policy to daily, weekly, monthly, and yearly
- You back up Azure VMs once a day.
https://learn.microsoft.com/en-us/azure/backup/backup-azure-backup-faq
Best regards,
Leon