1. For good.
For the record. For good.

2. Putting Parsimonious
Preservation into Practice
Recent Developments
at The National Archives (UK)
Tim Gollins
Head Of Digital Preservation
21/11/2012

3. Our Public Task
Our responsibility
for the government record,
its past and future, its use and re-use,
authentic, available and accessible to all

4. How long did you say this parchment would last?
4

5. The File format Long Tail
File Extension Count %
msg 1225790 57.6
doc 437803 20.6
• Our own administrative records xls
pdf
135573
82524
6.4
3.9
jpeg 58748 2.8
1,400,000 url 20701 1.0
xlsx 16777 0.8
docx 16765 0.8
1,200,000 htm 15616 0.7
txt 14199 0.7
ppt 12834 0.6
1,000,000 gif 11154 0.5
rtf 11046 0.5
tif 9293 0.4
Number of files
800,000 MBX 6044 0.3
png 4812 0.2
obr 4368 0.2
600,000 bmp 3286 0.2
zip 2499 0.1
html 2307 0.1
csv 2266 0.1
400,000
vsd 2088 0.1
DAT 1972 0.1
xml 1898 0.1
200,000 pptx 1700 0.1
0
wmz
jpeg
djvu
eps
dwg
exe
psd
dll
msg
xlsx
tmp
obr
DAT
css
log
mno
DTA
MBX
sql
xls
rtf
zip
csv
VMBX
mht
ico
mp3
xlsm
bat
pptx
sgm
htm
ppt
db
js
File Format
5

6. For the record. For good.
For good.
Questions?