Proxy Cafe: the backup edition

No better day to talk about disaster recovery

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What is a backup

• not "DCIM2568 - Copy.jpg"
• not a snapshot
• not an archive

The only defense against:

• hardware failure, theft, loss

• Rotational Velocidensity bit rot

• ransomware infections

Code red stories

What do you need to backup?

• your laptop
• your server
• your mobile phone
• your work laptop

Not all files are created equal

It's a matter of life or death

Press F to pay respect

I cry but I'll live

You forgot you are supposed to be an adult

Bonus: things that you suppose are always available

Software features

• Versioning
• Incremental backups
• Deduplication
• Compression
• Encryption on transport
• Encryption at rest
• Error correction
• Consistency

What about the hardware?

• go to the cloud someone else's computer
• buy a NAS 🤮
• buy a DAS and make a NAS 😎
• buy hard drives and put them under the bed
• dvd blu rays
• tapes (lol)

Things that get confused for backups

• file synchronization
• raids

A few rule of thumbs

Either you save money or you save data

The 3-2-1 rule

Always test your backups

Go low tech