An edge router in contrast to a core router is a router that is located at the edge of a backbone network and manages the traffic between Local Area Networks (LAN) and Asynchronous Transfer Mode (ATM) networks.
ElasticSearch is an open source search platform that enables enterprises to implement full text search. ElasticSearch is based on Apache Lucene, an open source index and searching technology that enables almost real-time search.
Ephemeral storage is used for scratch space and as temporary storage for the operating system in a guest VM. Ephemeral storage is allocated on a per virtual instance basis and exists while the virtual instance exists. When a virtual instance is deleted, the ephemeral storage and data is deleted as well. The size of ephemeral storage is determined by the flavor of the instance. Ephemeral storage persists through reboots of the guest operating system, but is deleted when the instance is deleted.
Mirantis OpenStack ships with experimental features that you can enable and try out. Experimental features provide additional functionality, but have not been subjected to the rigorous testing that is required for environments that need high levels of stability.
All features marked as experimental are unsupported and should be used in non-production environments only.