Hi,
we´re planing to implement Exchange 2010 - as a follow up, we´ll have to upgrade BE 12.5 to 2010 to get support for backup of Exchange 2010.
The best size for the Exchange 2010 Mailboxes would be 32k Ntfs Cluster size, since this maps 1:1 to the Mailbox Cluster Size.
I did not find any hints, if this NTFS Cluster size causes Problems related to BE 2010 driven backups.
Any links, information, expericences are appreciated!
thx,
Markus