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Sizing for Index storage

Created: 28 Jan 2013 • Updated: 29 Jan 2013 | 4 comments
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Sizing for Enterprise Vault is confusing as it almost impossible to get accurate sizing for our environment. I’m confused on how much we should have for the Indexing.  I know, we can always add more SAN LUNs to the server later in the future. 

As for initial setup, do you think 250 GB for Index (E:\) should be enough for a few years or should have more?  We will have 2 EV servers (Journal Archive and Mailbox Archive) with 4 Exchange 2010 servers (5,000+ mailboxes)

I'm planning to have the following configuration per EV Server:

  • C:\ drive (OS) : 60 GB
  • D:\ drive (Application): 60 GB
    • \MSMQ
    • \Program File(x86)\Enterprise Vault
    • \EVStorageCache
  • E:\ drive (Index) : 250 GB
  • F:\ drive (Archive): 2 TB (for Journal Archive EV Server) and 2TB (for Mailbox Archive EV Server)
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Rob.Wilcox's picture

Sizing for index volumes:

Though that information is pre EV 10, where indexing was purely 32 bit.

This one is for EV 10:

The document that is listed first in the EV 10 link contains sizing information.

GertjanA's picture

Indexing roughly is based on the size of the archived items.

If you have 1 TB of archived items, your index will be about 150GB (15%) (Symantec states the Full indexing, which gives you the best search features, is 13%, but better safe than sorry!)

In that perspective, seeing you estimate 2TB for legal and 2TB for mail, you are already looking at 600GB for indexes.

You can start of with 250, but I advise to start of with 500GB. This will allow you to run longer without needing to extend the drive (or add a disk)

Thank you, Gertjan, MCSE, MCITP,MCTS, SCS, STS

jdewing's picture

I will create a 2TB LUN per Enterprise Vaults.  EV01 will be used for Journal Archiving with 2TB vault store partition.  EV02 will be used for mailbox archiving with 2TB vault store partition.  Using calculating 15% (GertjanA recommended) will give me 300GB for indexing, so I will increase the E:\drive from 250GB to 300GB for both EV01 and EV02.


Rob.Wilcox's picture

Sounds good -- and hopefully you have some mechanism of increasing it, if the need arises?