"This is an important distinction you must know about. First off, a snapshot is a point-in-time copy of data that captures a system's current state, whereas a backup is a complete duplicate of specific data that is stored separately for recovery. As far as the purpose of each, a snapshot is for quick recovery, testing, and virtual environments, whereas a backup is for long-term data protection and disaster recovery."
"Before we do, there's one very important thing you need to know. There are two primary paths for creating snapshots in Linux: Btrfs and rsync. When using a Linux distribution with Btrfs (such as openSUSE), snapshots take up considerably less space and are much faster. If your distribution doesn't use the Btrfs file system, you'll be limited to the slower, more space-consuming rsync."
Snapshots capture a point-in-time state of a Linux system and allow restoring or rolling back the system to that exact state. Snapshots differ from backups: snapshots enable quick recovery, testing, and virtual environment use, while backups provide full duplicates for long-term protection and disaster recovery. Linux supports two main snapshot methods: Btrfs and rsync. Btrfs snapshots are faster and far more space-efficient; rsync-based snapshots are slower and consume more space. Installing Timeshift simplifies snapshot creation and management. Storing snapshots on an external drive protects against disk failure. Both snapshots and backups are necessary for reliable recovery.
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