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Backups, explained for MSPs
Plain answers to the questions that come up when you look after other people's servers: what to back up, where to keep it and how to get it back.
- What is the 3-2-1 backup rule, and does it still work?What 3 copies, 2 kinds of storage and 1 offsite copy mean for a client's file server today, and why 3-2-1-1-0 adds an immutable copy for ransomware.
- What is the difference between full, incremental and differential backups?Full, incremental, differential and incremental forever backups compared: what each sends, what a restore needs and what one lost backup costs you.
- How do I back up Hyper-V virtual machines?Back up Hyper-V VMs from the host through Hyper-V's own interfaces, not by copying VHDX files, use RCT for smaller nights, and test restores on an isolated switch.
- How do I protect backups from ransomware?Keep one copy ransomware can't change, use separate credentials, a write-only backup agent, enough retention and restores a person approves with two-factor sign-in.