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Archiving and eDiscovery Community Blog

Estimating Enterprise Vault Index Volume Sizes

Created: 14 Mar 2013 • Updated: 29 May 2014
Rob.Wilcox's picture
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With Enterprise Vault 10 came a whole new 64 bit indexing engine. Along with that is another slight change and that is in the indexing levels, there used to be three levels :

  • brief,
  • medium and
  • full

Now there are just two brief and full. In most documentation Symantec suggests that brief indexing requires about 4% of the overall size of all your archived data, and full needs about 13% (See this link).

So what does this mean in real life?

If you have 4 Tb of archived data (or it is predicted that is what you'll have in say 6 months) then you'll need the following storage for your indexes:

4 Tb = 4000 Gb (thereabouts)
4000 * 0.13 = 520 Gb

520 Gb of storage for your indexes.

Airing on the side of caution, if you allocated 15% of storage instead then you'd see the need for:

4000 * 0.15 = 600 Gb

This extra storage requirement should be borne in mind when it comes to designing the disk requirements for your server.