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PANDORA archive size and monthly growth

Statistics as at 27 September 2009


  This month Last month Growth this month
Number of archived titles 23,120 22,791 329
Number of archived instances* 48,870 47,879 991
Number of files 73,983,487 72,061,534 1,921,953
Data size 3.26 TB 3.17 TB 94 GB

* An archived instance is a single snapshot or copy of a title that has been added to the archive. Many titles are copied into the archive more than once to capture changing content, for example, when serial titles add new issues. Each new copy of a title is referred to as an 'archived instance'.

Note: The archive comprises three master copies (preservation, display and metadata) stored on the Library's Digital Object Storage System (DOSS). In addition to the master copies a copy for display purposes is maintained on a web server and it is from this single copy that these figures are derived. Therefore these figures should be seen as indicative rather than inclusive.

Other statistical reports

PANDORA search trends

 
PANDORA web usage statistics reports

 
Bimonthly reports of newly archived instances added to PANDORA


The Australian web domain harvests: a preliminary quantitative analysis of the archive data (statistical report)