I am trying to move index file to a remote share drive, to access the drive I need put username/password, where should I put these information into the indexes.conf file? Or Should I just mount the drive manually first? but this manual process will need to be done every time when server reboot right?
If I understand correctly, you just want to archive your indexed data into a remote shared drive.
Given that you need to specify a username/password or mount the drive manually beforehand, I wouldn't use the archiving options provided by the indexer and use an archiving script instead: