Question : What may happen if I remove the default NTFS permission

1. I need to know what caveats or issues I can encounter if I remove the default NTFS permissions of "SYSTEM: Full Control" to data folders on my server.
2. I need a Microsoft article that supports the answer to the above request (in point # 1).

Answer : What may happen if I remove the default NTFS permission

If you want to Switch from CCR to SCC then you have to rebuild the Entire Exchange Mailbox Servers again.

Plus in SCC if the SAN goes bad then you stand at risk of loosing the Databases.

I would say you need to check for the Reducing the Size of the Databases.

Check if the Old Log Files are getting Flushed out with the Backup Software.

Check users Mailbox Size. Reduce the Users Mailbox Size.