We are running a large SharePoint search service application with 11 Million items in search index.
We are having DR servers setup and can not run the search service crawling on content databases in DR database server as the DR content databases are in read only mode with LOG Shipping enabled.
We are afraid as search service index growing on daily basis and could not have any backup at DR environment.
How we can manage the search service available in DR server along with production search instance or at least can we schedule any monthly backup and restoration of search service from production to DR?
Please suggest.