As a review, the heart of an Ocularis 5 recorder system is the master core. This component manages the configuration database of the system. The master core is always in the top level main branch. In Ocularis ENT and ULT, additional cores called 'slave cores' may be added to help distribute the work load from the master core and provide redundancy. If an Ocularis ULT or ENT installation has a master core but no slave core(s) and the master goes down, operators will not be able to see video or log in to the system, events will not be transmitted to the Base and the system cannot be configured. With a slave core installed, operators already logged in will still be able to see video although new log ins will not be successful nor will events be received. Therefore, it is important to take advantage of slave cores in these models of Ocularis and always install at least one.
In Ocularis 5, there are some things about slaves and branches that are worth looking at closely. To start, there are some general rules about the two: