Indexing Version 2: FAQ
No, Secondary Index Server is only available on Version 1 MediaAgents.
During browse operations, iDataAgents that are configured to use Indexing V2 show deleted items across backup cycles. This is a change from Indexing V1 agents, which only showed deleted items in the current cycle.
With the latest version of indexing, previous index backup jobs are kept on the backup media until there are at least three versions present on the backup media. Also, the index backup job considers the index of separate backup sets as separate versions. Therefore, you might still see older index backups on your storage media even after several backup jobs for different backup sets.