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Migrate mailboxes and archives imported

Created: 17 Oct 2012 • Updated: 17 Oct 2012 | 2 comments
GertjanA's picture
This issue has been solved. See solution.

Hello all,

I am performing a project, where mailboxes from environment A are migrated to environment B.

Environment A is Exchange 2007, with EMC MailXtender, and Environment B is Exchange 2007 with EV90SP2. items in Environment A are archived in EMC, and have EMC shortcuts (messageclass IPM.Note.EXShortcut).

The admin of environment A is exporting archived items per user into PST's, which are imported in (EV) user-archives in environment B (without creating shortcuts, and in a specific folder). The admin of environment A also restores the EMC archives back into the mailboxes, to remove the existing EMC shortcuts. After this excercise, the mailbox from Environment A is moved to Environment B where the moved mailbox is being archived. This means that the mailbox contains items that are already in the archive.

Obviously. this means that in the archive (when EV archiving in Environment B runs), there will be double items in the archive.

Will this (however) mean that when the items are archived, due to SIS, the items are not stored twice, or will they get archived twice anyway?

I am not yet able to determine this, as we have not yet started migrating mailboxes from Environment A.

I am trying to convince the admin in A that there is no point to restore these items, but if that fails, what can be the effect on the storage for EV?



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JesusWept3's picture

You will definitely two items in the index, which you can clean with the EVDuplicateCleaner.
Attachments will more likely than not be SIS'd, but small items and the bulk of the email (excluding attachments) won't be SIS'd because the meta data will be different on the items in the PST and the items in the mailbox, and also items below a certain size (i think 32k? or smaller, can't remember) won't be SIS'd

I am confused as to why they're duplicating their efforts
why not just restore all mail, and then archive the mailbox after its been moved? or are they just restoring items that have shortcuts and the other items without shortcuts don't get exported?

GertjanA's picture

Long story short:

There was little faith in how and when data is being moved. There was fear that users might not understand EV initially. There was fear that not all items would be transferred to new environment. There was scepticism to the functionality of EV. There is a lot of pressure to make this succeed, and basically adhere to the 'environment A' wishes and demands...

Thanks for confirming.

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