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Digital preservation by Chris Smart
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Digital Preservation Chris Smart
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Transcript of Digital preservation by Chris Smart
- 1. Digital Preservation Chris Smart
2. Why bother? 3. Why bother?
- Paper already human readable
- Digital not human readable
4.
- Computers are dumb.
5.
- Computers are dumb.
- Really.
6.
- They are fast.
7.
- Everything is ones and zeros.
- (010101100101100101010111001...)
8.
- Every little one or zero is called a bit
- 0 = a bit
- 1 = a bit
9.
- A group of 8 bits is called a byte
- 01010110 = a byte
10.
- This system is called binary (base-2)
- We count in denary (decimal, base-10)
11.
- Here's the problem:
- Bits meannothingon their own.
12.
- 01100001
- = ?
13.
- 01100001
- = 97
14.
- 01100001
- = a
15.
- 01100001
- =anything
16.
- How do you knowwhatit means?
17.
- Without a specification, there is no way to know what the binary data means.
18.
- File formats are specifications.
19.
- 01100001
- = a
20. http://www.flickr.com/photos/janoma/4472147302/ 21. http://www.flickr.com/photos/janoma/4472147302/ 22.
- Choose your file formats carefully.
23. So, why bother?
- Because digital records are easily lost.
- Forever.
24.
- Microsoft Office 2003 Service Pack 3 disabled dozens of file formats.
- http://support.microsoft.com/kb/938810
25.
- Relying on a single vendor for file format support is bad, mmm'k.
26.
- Using a free and open format
- avoids this problem.
27. Migration
- The approach NAA takes.
28. Digital Preservation Tools
- Xena
- Detects file format
- Migrates to open format
- Encodes binary in base64
- Wraps in XML metadata
29. 30.
- That's only half the story.
31. Management Tools
- Manifest Maker
- DPR (Digital Preservation Recorder)
- Checksum Checker
32. 33. 34. 35. Digital Preservation Software Platform (DPSP)
- Free & open source software (GPLv3)
- Single installer (get set up in 10 min)
- Includes digital preservation software
- Includes all third party software
- Runs on a laptop
36. Resources
- We want to collaborate.
37. Digital Archive
- Runs on open source software
- Vendor agnostic hardware
- Refreshed every few years
38. 39. Questions?
- ODF made with Linux and LibreOffice (OpenOffice.org).
- Licensed under Creative Commons Attribution 3.0 Australia License.
40. Resources
- http:// dpsp.sourceforge.net
- [email_address]
- [email_address]
- [email_address]
41.
