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69 lines
1.6 KiB
Markdown
69 lines
1.6 KiB
Markdown
---
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title: "22-digital-preservation"
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aliases:
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tags:
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- comp210
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- lecture
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sr-due: 2023-01-16
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sr-interval: 63
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sr-ease: 270
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---
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how long will data survive?
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data rot
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- eveything wears out
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- digital media degrades
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- unreadable media
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- damaged files
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- backups may help
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- hardware and software becomes obsolete
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- cloud service shut down
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- os no longer exists
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- no device to read media
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- no software to read files
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- format documentation non-existent or missing
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- file system changes - lost metadata
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Dark ages 2
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## preservation of digital material
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- continuous format migration
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- everytime you upgrade software, convert all documents
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- document changes, keep old versions
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- emulation of olf hardware
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- open things in original evironment
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- standardised preservation formats
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- pdf/pda
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- not designed for convenient editing
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- dont know original format?
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- lots of tools, but user unfriendly and somwhat limited
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- need to find version and which software
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- in cloud
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- e.g., social media, websites
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- things are changing
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- acquisitions, bankruptcy
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- link rot
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- internet archive
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- aims to archive everything
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- crawl websites (wayback machine)
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- digitise of magazines and films
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- over 100 petabytes
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- controversy over copyright
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- only static content
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- most national archive organisations are doing similar
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- not eveything is accessable
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- some services let you export your data
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what happens when you die
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- or stoke etc
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- few legel precedents
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- prohibit giving password to someone else
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- "memorialise an account" |