Since in-memory and relaxed-durability databases exist only in cache, they lose their object definition, data, and RepAgent configuration once the host data server shuts down or restarts. You must reinitialize or restore the in-memory or relaxed durability database after the host data server restarts.
Ensure that you have enough disk space and time to perform a database dump and load, and that the period of time during which Replication Server skips transactions is acceptable. You can estimate the acceptable period of time by monitoring the segments in the outbound queue with admin who, sqm. See Replication Server Reference Manual > Replication Server Commands > admin who