Server-level backups should occur at least every 48 hours if not daily. If possible, it's a good idea to prioritize server backups anytime you add, move, or delete large chunks of data from your server, even if you have to back up the server a few times in one day.
The best time to backup a server is usually overnight. For many organizations and companies then, you likely want to start about 7:00 pm and set the backup to use all the time it needs until about 6:00 or 7:00 am in the morning.
Differential BackupDifferential Backup This type of backup involves backing up data that was created or changed since the last full backup. To put it simply, a full backup is done initially, and then subsequent backups are run to include all the changes made to the files and folders.
Backup frequency is a management class attribute. This attribute specifies the number of days that must have elapsed since the last backup before the data set can be backed up again automatically, even though the data set may have changed and the volume it resides on is undergoing backup processing.
The principal goal of backup scheduling is to establish time frames to back up an entire system, multiple systems, data and databases, network files, and other critical systems and data.
The most common backup types are a full backup, incremental backup and differential backup. Other backup types include synthetic full backups and mirroring.
Full Backup This is the most time-consuming backup of all methods to perform and may put a strain on your network if the backup is occurring on the network. But it's also the quickest to restore from because all the files you need are contained in the same backup set.
There are two types of backups: image copies and backup sets. An image copy is an exact duplicate of a datafile, control file, or archived log.