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Short lessons that explain one thing properly. Search for a word, or pick a subject and read it through from the basics.
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7 of 58 lessons about Backups Show all lessons
Cyber security fundamentals
How attacks work, in plain words: ransomware, phishing, malware and the flaws they use.
1 of 8 lessons shown
Backups and disaster recovery
Keeping a copy you can get back: the 3-2-1 rule, the kinds of backup, and backup against archive.
4 lessons
- The 3-2-1 backup rule Three copies, two kinds of storage, one kept somewhere else. A simple rule that covers most of the ways data is lost. Beginner 2 min read
- Full vs incremental vs differential backups Three ways a backup decides what to copy each time, what each costs in time and storage, and what each one needs when you restore. Intermediate 3 min read
- What is cloud backup? Cloud backup keeps a copy of your data with a provider over the internet. How it works, and why Microsoft 365 or Google Workspace is not one. Beginner 3 min read
- Backup vs archive: what’s the difference? A backup is for getting back to work after a loss. An archive is for keeping records you must be able to find years later. Why you need both. Intermediate 3 min read
Cloud platforms and storage
The three big platforms side by side, and the kinds of storage they sell.
2 of 6 lessons shown
- What is cloud storage? Cloud storage keeps your files on a provider’s equipment and delivers them over the internet. Where the data lives, how safe it is and who can read it. Beginner 3 min read
- Object storage vs block storage vs file storage Cloud providers sell three kinds of storage. How object, block and file storage each hold data, what each is used for and which one a job needs. Intermediate 3 min read
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