This section explains the functionality between In-Place Archives and various Exchange features:
• Exchange Search The ability to quickly search messages becomes even more critical with archive mailboxes. For Exchange Search, there's no difference between the primary and archive mailbox. Content in both mailboxes is indexed. Because the archive mailbox isn't cached on a user's computer (even when using Outlook in Cached Exchange Mode), search results for the archive are always provided by Exchange Search. When searching the entire mailbox in Outlook 2010 and later and Outlook Web App, search results include the users' primary and archive mailbox.
• In-Place eDiscovery When a discovery manager performs an In-Place eDiscovery search, users' archive mailboxes are also searched. There's no option to exclude archive mailboxes when creating a discovery search from the Exchange Administration Center (EAC). When using the Exchange Management Shell to create a discovery search, you can exclude the archive by using the DoNotIncludeArchive switch. For details, see New-MailboxSearch. To learn more, see In-Place eDiscovery.
ImportantImportant:
You can’t use In-Place eDiscovery to search a disconnected mailbox.
• In-Place Hold and litigation hold When you put a mailbox on In-Place Hold or litigation hold, the hold is placed on both the primary and the archive mailbox. To learn more about In-Place Hold and litigation hold, see In-Place Hold.
• Recoverable Items folder The archive mailbox contains its own Recoverable Items folder and is subject to the same Recoverable Items folder quotas as the primary mailbox. To learn more about recoverable items, see Recoverable Items Folder.
• Archiving Lync content in Exchange You can archive instant messaging conversations and shared online meeting documents in the user’s primary mailbox. The mailbox must reside on an Exchange 2013 Mailbox server and you must have Microsoft Lync 2013 deployed in your organization. For details, see Integration with SharePoint and Lync.