100 lines
2.1 KiB
Org Mode
100 lines
2.1 KiB
Org Mode
#+OPTIONS: reveal_single_file:t toc:nil author:nil date: nil
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#+REVEAL_INIT_OPTIONS: slideNumber:"c/t"
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#+REVEAL_EXTRA_CSS: custom.css
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#+TITLE:
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#+REVEAL_TITLE_SLIDE_BACKGROUND: ./1.jpg
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#+REVEAL_TITLE_SLIDE_BACKGROUND_SIZE: 1200px
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* Proxy Cafe: the backup edition
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*
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No better day to talk about disaster recovery
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[[https://old.reddit.com/r/AskHistorians/comments/176wcxp/what_important_data_documents_or_information_was/][1]] [[https://old.reddit.com/r/sysadmin/comments/16fw1j4/how_did_911_affect_you_as_a_sysadmin/][2]] [[https://old.reddit.com/r/sysadmin/comments/d3a3ei/911_it_story/][3]]
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* What is a backup
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- not "DCIM2568 - Copy.jpg"
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- not a snapshot
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- not an archive
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#+ATTR_REVEAL: :frag (roll-in)
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The only defense against:
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#+ATTR_REVEAL: :frag (roll-in)
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- hardware failure, theft, loss
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#+ATTR_REVEAL: :frag (roll-in)
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- [[https://lezzo.org/copypasta/#rotational-velocidensity][+Rotational Velocidensity+]] bit rot
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#+ATTR_REVEAL: :frag (roll-in)
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- ransomware infections
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** Code red stories
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[[./batman.jpg]]
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** What do you need to backup?
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#+ATTR_REVEAL: :frag (roll-in)
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- your laptop
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- your server
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- your mobile phone
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- your work laptop
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**
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[[./bus.jpg]]
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*
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Not all files are created equal
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**
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It's a matter of life or death
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[[./chrome.jpg]]
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**
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Press F to pay respect
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[[./borderlands.png]]
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**
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I cry but I'll live
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[[./please_seed.png]]
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**
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You forgot you are supposed to be an adult
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[[./uk.png]]
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**
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Bonus: things that you suppose are always available
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*
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Software features
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- Versioning
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- Incremental backups
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- Deduplication
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- Compression
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- Encryption on transport
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- Encryption at rest
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- Error correction
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- Consistency
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**
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What about the hardware?
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#+ATTR_REVEAL: :frag (roll-in)
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- go to +the cloud+ someone else's computer
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- buy a NAS 🤮
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- buy a DAS and make a NAS 😎
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- buy hard drives and put them under the bed
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- +dvd+ blu rays
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+ tapes (lol)
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**
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[[./terra.jpg]]
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**
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Things that get confused for backups
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- file synchronization
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- raids
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* A few rule of thumbs
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**
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Either you save money or you save data
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[[./dropbox.png]]
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**
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The 3-2-1 rule
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**
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Always test your backups
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[[./spongebob-haiku.jpg]]
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**
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Go low tech
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[[./collage.png]]
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