Full Backup: Copies everything. Takes longest but simplest to restore.
Incremental Backup: Only copies files changed since last backup. Fast but needs all incremental backups to restore.
Differential Backup: Copies files changed since last full backup. Balance of speed and restore simplicity.
3-2-1 Rule: 3 copies, 2 different media types, 1 offsite (cloud)
This deep dive covers Deep Dive: Backup Types within Utility Software for GCSE Computer Science. Revise Utility Software in 3.4 Computer Systems for GCSE Computer Science with 15 exam-style questions and 10 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 4 of 7 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Utility Software
Which of the following is an example of utility software?
Explain what defragmentation software does and why it improves the performance of a hard disk drive.