Symantec NETBACKUP 7 - Manual (Page 23)

About deduplication server requirements
All hosts that are used for deduplication must be NetBackup 7.0 or later. Hosts
include the master server, the media servers, and the clients.
The computer’s CPU and memory constrain how many jobs can run concurrently.
Table 2-3 Deduplication server minimum requirements
Requirement Hardware
CPU speed is the most important factor for performance. Minimum
CPU speed should be 2.2 GHz.
The deduplication storage server should have a minimum of 4 CPU
cores. Symantec recommends eight cores.
Symantec recommends Intel, AMD, and Sun SPARC processors (in
order of effectiveness).
CPU
Symantec recommends 4 GBs of memory minimum. RAM
The operating system must be a supported 64-bit operating system.
For supported systems, see the NetBackup Release Notes.
Operating system
Note: Symantec recommends that you do not use the master server as a
deduplication storage server. Master server activity and media server deduplication
activity on the same host degrades performance.
Note: Symantec recommends that you do not use an existing media server for
deduplication. Similarly, Symantec recommends that you do not repurpose older
host hardware for deduplication.
About media server deduplication limitations
NetBackup media server deduplication and Symantec Backup Exec deduplication
cannot reside on the same host. If you use both NetBackup and Backup Exec
deduplication, each product must reside on a separate host.
NetBackup deduplication components cannot reside on the same host as a PureDisk
Deduplication Option (PDDO) agent. Therefore, you cannot use the same media
server for both NetBackup deduplication and as a PDDO host.
You cannot upgrade to NetBackup 7.0 or later a NetBackup media server that
hosts a PDDO agent. If the NetBackup 7.0 installation detects the PDDO agent,
23 Planning your deployment
About the NetBackup Media Server Deduplication Option