Folder Sync Microsoft SQL Server requirements
Folder Sync requires a Microsoft SQL Server database to store the data it collects about the mailbox folders. When you perform the initial post-installation configuration of Folder Sync you must specify a SQL Server instance for Folder Sync to use.
If you install Folder Sync on multiple servers for load sharing or redundancy, all the instances of Folder Sync must use the same SQL Server instance, so that they can share the mailbox folder synchronization data.
For the versions of SQL Server that Folder Sync version supports, see the Veritas Alta Archiving Compatibility List, at http://www.veritas.com/docs/000016792.
We recommend that you locate SQL Server on a standalone computer, not the computer on which Folder Sync is installed. The computer that hosts SQL Server requires the following hardware resources:
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For the synchronization of fewer than 5000 mailboxes, a minimum of 2 CPU and 8 GB RAM.
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For the synchronization of more than 5000 mailboxes, a minimum of 4 CPU and 16 GB RAM.Note: You may want to consider a high-availability solution for your SQL Server environment. A high-availability solution can help to minimize or mitigate the effect of system downtime. See the following Microsoft article, or its equivalent for your SQL Server version:https://msdn.microsoft.com/en-us/library/ms190202(v=sql.130).aspx.
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