Elasticsearch as a primary database

[hossein_ey (Hossein Eivazy)]

@dadoonet

Yes. The cluster can in some extreme conditions become RED which means that some primary shards are not available anymore

so in this situation data completely lost ? we can not restore that ?
what is your recommendation? do we use elasticsearch as a primary database or we use another database, if we should use another, what is the best database matched with elasticsearch?