Backups + Journaling + Snapshots + Images

Full backup

copies the entire device or storage system

Incremental backup

captures the changes since the last backup and is faster to back up but slower to recover

Differential backup

captures the changes since the last full backup and is faster to recover but slower to back up

Journaling

creates a log of changes that can be reapplied if an issue occurs. ____ is commonly used for databases and similar technologies that combine frequent changes with an ability to restore to a point in time

Snapshot

capture the full state of a system or device at the time the backup is completed. ___ common for VM’s, where they allow the machine state to be restored at the point in time that the ____ was taken

Images

most often refer to a complete copy of a system or server, typically down to the bit level for the drive