You have an Acronis Backup & Recovery 11.5 for Microsoft Exchange Server license for each node of the cluster.
The Exchange writer for VSS is turned on.
You have the "Deduplication for Microsoft Exchange Server" add-on.
You downloaded the setup program for the advanced editions of Acronis Backup & Recovery 11.5.
You have a machine running Windows that will act as the management server. The management server enables configuring of Exchange cluster backup.
You have a machine running 64-bit Windows that will act as the storage node. The storage node serves as storage for backups of other machines and enables deduplication. Make sure this machine meets the system requirements described in the installation documentation.