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Created: 2024-09-08 Sun 20:16

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Created: 2024-09-11 Wed 17:26

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-

1. Proxy Cafe: the backup edition

+
+

1. Proxy Cafe: the backup edition

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-

2.

+
+

2.

-#+BEGINNOTES +No better day to talk about disaster recovery +

+ +

+1 2 3 +

+ +
+
+
+
+

3. What is a backup

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

+The only defense against: +

+ +
    +
  • hardware failure, theft, loss
    • + +
+ + + +
    +
  • ransomware infections
    • + +
+ +
+
+

3.1. Code red stories

+ +
+

+

+
+
+
+

3.2. What do you need to backup?

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

3.3.

+ +
+

+

+
+ +
+
+
+
+

4.

+

+Not all files are created equal +

+
+
+

4.1.

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+It's a matter of life or death + +

+
+
+

4.2.

+

+Press F to pay respect + +

+ +
+
+

4.3.

+

+I cry but I'll live + +

+ +
+
+

4.4.

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+You forgot you are supposed to be an adult + +

+
+
+

4.5.

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+Bonus: things that you suppose are always available

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-

3. Scaletta

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+

5.

+

+Software features +

    -
  • my 9/11 moment
    • -
  • the guy made fun of me
    • -
  • spiega il problema
    • -
  • elenca i dispositivi
    • -
  • elenca i possibili files
    • -
  • categorizza i files
    • -
  • frequenza
    • -
  • possibilità: -
      -
    • rolling windows
      • -
    • incrementale
      • -
    • deduplicazione
      • -
    • sincronizzazione (no backup)
      • -
    • encryption
      • - -
    • -
  • soluzioni software -
      -
    • vedi soluzioni software
      • -
    • categorizza soluzioni software?
      • -
    • 3 2 1 rule
      • -
    • try to restore
      • - -
    • -
  • soluzioni hardware -
      -
    • cloud, sì o no?
      • -
    • backblaze, sì o no?
      • -
    • nas, sì o no?
      • -
    • elettricità
      • -
    • come risparmiare
      • -
    • come scegliere hdd
      • -
    • raid? (lol)
      • - -
    • - -
  • parte tecnica sui file systems
    • -
  • bonus, what should we backup but we think it's always available?
    • +
  • Versioning
    • +
  • Incremental backups
    • +
  • Deduplication
    • +
  • Compression
    • +
  • Encryption on transport
    • +
  • Encryption at rest
    • +
  • Error correction
    • +
  • Consistency
+
+
+

5.1.

-#+ENDNOTES +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)
    • + +
+
+
+

5.2.

+ +
+

+

+
+ +
+
+

5.3.

+

+Things that get confused for backups +

+
    +
  • file synchronization
    • +
  • raids
    • + +
+ +
+
+
+
+

6. A few rule of thumbs

+
+
+
+
+

6.1.

+

+Either you save money or you save data + +

+
+
+

6.2.

+

+The 3-2-1 rule +

+
+
+

6.3.

+

+Always test your backups + +

+
+
+

6.4.

+

+Go low tech +

diff --git a/readme.org b/readme.org index 1bb78f4..556eb1d 100644 --- a/readme.org +++ b/readme.org @@ -7,49 +7,93 @@ * Proxy Cafe: the backup edition * -volevo trovare un meme sulle torri gemelle, magari collegato al fatto che in -università avevo due tower computers, uno backup dell'altro, che chiamavo -proprio "le torri gemelle". +No better day to talk about disaster recovery -Comunque, edgyness a parte, la realtà spesso mema più di quanto ci aspettiamo. -Storia su come i sistemi di backup di una torre, stessero sull'altra. +[[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]] -Oh well, the sysadmins didn't receive a call from the C suites that morning anyway -#+BEGIN_NOTES -* Scaletta -- my 9/11 moment -- the guy made fun of me -- spiega il problema -- elenca i dispositivi -- elenca i possibili files -- categorizza i files -- frequenza -- possibilità: - + rolling windows - + incrementale - + deduplicazione - + sincronizzazione (no backup) - + encryption -- soluzioni software - - vedi soluzioni software - - categorizza soluzioni software? - - 3 2 1 rule - - try to restore - - what about databases and similar IO heavy software? -- soluzioni hardware - - cloud, sì o no? - - backblaze, sì o no? - - nas, sì o no? - - elettricità - - come risparmiare - - come scegliere hdd - - raid? (lol) +* What is a backup +- not "DCIM2568 - Copy.jpg" +- not a snapshot +- not an archive -- parte tecnica sui file systems -- bonus, what should we backup but we think it's always available? -#+END_NOTES +#+ATTR_REVEAL: :frag (roll-in) +The only defense against: -* reddit -https://old.reddit.com/r/sysadmin/comments/16fw1j4/how_did_911_affect_you_as_a_sysadmin/ -https://old.reddit.com/r/AskHistorians/comments/176wcxp/what_important_data_documents_or_information_was/ -https://old.reddit.com/r/sysadmin/comments/d3a3ei/911_it_story/ +#+ATTR_REVEAL: :frag (roll-in) +- hardware failure, theft, loss + +#+ATTR_REVEAL: :frag (roll-in) +- [[https://lezzo.org/copypasta/#rotational-velocidensity][+Rotational Velocidensity+]] bit rot + +#+ATTR_REVEAL: :frag (roll-in) +- ransomware infections + +** Code red stories +[[./batman.jpg]] +** What do you need to backup? +#+ATTR_REVEAL: :frag (roll-in) +- your laptop +- your server +- your mobile phone +- your work laptop +** +[[./bus.jpg]] + +* +Not all files are created equal +** +It's a matter of life or death +[[./chrome.jpg]] +** +Press F to pay respect +[[./borderlands.png]] + +** +I cry but I'll live +[[./please_seed.png]] + +** +You forgot you are supposed to be an adult +[[./uk.png]] +** +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? + +#+ATTR_REVEAL: :frag (roll-in) +- 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) +** +[[./terra.jpg]] + +** +Things that get confused for backups +- file synchronization +- raids + +* A few rule of thumbs +** +Either you save money or you save data +[[./dropbox.png]] +** +The 3-2-1 rule +** +Always test your backups +[[./spongebob-haiku.jpg]] +** +Go low tech +[[./collage.png]] diff --git a/spongebob-haiku.jpg b/spongebob-haiku.jpg new file mode 100644 index 0000000..4e9f62a Binary files /dev/null and b/spongebob-haiku.jpg differ diff --git a/spongebob.jpg b/spongebob.jpg new file mode 100644 index 0000000..366fc05 Binary files /dev/null and b/spongebob.jpg differ diff --git a/terra.jpg b/terra.jpg new file mode 100644 index 0000000..eec3893 Binary files /dev/null and b/terra.jpg differ diff --git a/uk.png b/uk.png new file mode 100644 index 0000000..a8001bb Binary files /dev/null and b/uk.png differ