Can I open multiple instances of Powershell to export several different mailboxes (to PSTs) at once...or are there any dependency issues with exporting multiple PSTs at the same time?

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I would hope you wouldn't try to export multiple to the same PST file. I don't see any other issues than possibly bringing the server's performance to its knees.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

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Hi thekernel99,
To export multiple mailboxes to their respective .pst files at once you can pipe in the identities of those mailboxes to the export task. You don't need to open multiple instances of Powershell.
For example:
Get-Mailbox -OrganizationalUnit Marketing | Export-Mailbox -PSTFolderPath C:\PSTFiles

For more information,please see:
Export-Mailbox

http://technet.microsoft.com/en-us/library/aa998579(v=exchg.80).aspxFrank
Wang
TechNet Community Support

There is an amazing pack of free network admin tools. click here to download it

Hi thekernel99,
To export multiple mailboxes to their respective .pst files at once you can pipe in the identities of those mailboxes to the export task. You don't need to open multiple instances of Powershell.
For example:
Get-Mailbox -OrganizationalUnit Marketing | Export-Mailbox -PSTFolderPath C:\PSTFiles

For more information,please see:
Export-Mailbox

http://technet.microsoft.com/en-us/library/aa998579(v=exchg.80).aspxFrank
Wang
TechNet Community Support

There is an amazing pack of free network admin tools. click here to download it