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Maximum OST File Size
Hi,
We have a customer in desperate need of larger ost files.
They currently use Exchange 2003 and Outlook 2003 with all files cached locally.
They also are very heavy email users and constantly have to archive emails to keep under the 2GB limit.
They will upgrade to exchange 2007 and outlook 2007.
My understanding is the database on the server can get up to 16TB in size - but my question is does anybody know the maximum individual user mailbox size limit on exchange 2007 and the local ost file size limit (possibly 20GB??)?
I have tried emailing Microsoft - but they don't answer the question!!
Many thanks in advance,
Mike
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by: icorpsPosted on 2008-04-22 at 09:03:36ID: 21412489
The larger the OST, the worse outlook will perform. I've worked with many clients that had users have OST's well over 2GB's, but as they grow, outlook performance suffers. In fact, outlook often does not close properly and the OST needs to be checked on startup.
If this much mail does need to be kept, I'd recommend some sort of Email Archiving solution so that they don't need to store all the mail locally. This will improve performance of Exchange and Outlook and allow users to keep all their mail in their mailbox without having to archive to PST's.
There are all sorts of different solutions for this that vary from $1000 to tens of thousands based on the needs.