Be aware of the following concerns associated with alternate media server names:
The specified media servers must have access to the destination storage unit. If not, you risk a deadlock situation and your Vault job will fail. To prevent this situation, use the Media Servers criterion on the Choose Backups tab to ensure that only backups from certain media servers are selected.
If multiple duplication rules use different media server names that are part of a server name group, Vault processes only the first duplication rule; successive rules do not get processed. Also, because the media server name for the duplication rule is expanded to include all media server names in the group, all images written by all storage units that use those media server names are processed by the first duplication rule that uses any name from the group. All images are processed, but by the first duplication rule only.
Symantec recommends that you specify only one destination storage unit per server. If you specify more than one, you may create a problem because Vault does not have a mechanism to choose to which destination storage unit to send the duplicate images.