Can I bring a warm standby SQL Server database online and then return to standby mode?
From what you are describing about what Actifio needs you should be able to put the secondary database in readonly mode after you restore the latest log file. See Kendra Little's post on log shipping secondaries in read only mode, she goes over some things that you need to account for. One of the things she mentions you'll need to account for putting the database in standby readonly is in order to continue restoring the next transaction log file you need to kick all of the users out of the database. That means you need to setup your restore scripts and the Actifio tool to work around each other.