Memcached is a general-purpose distributed memory caching system that OpenStack uses as a highly available back end for the OpenStack Identity service and Dashboard.
Mirantis OpenStack is a hardened distribution of the latest OpenStack release that includes additional bug fixes and high availability configurations. To ensure working configurations the Fuel deployment tool must be used to deploy cloud environments based on Mirantis OpenStack.
The Multi-Chassis Link Aggregation Group, or MC-LAG, or MLAG, is a network aggregation group designed to increase network bandwidth and provide redundancy in case of a failure on a chassis.
MongoDB is an open source NoSQL document database optimized to host very large tables on commodity hardware. Fuel deploys MongoDB as a back end for the Telemetry service.
MPLS over GRE is a network technology that enables transferring of Multiprotocol Label Switching (MPLS) packets over a network that does not support MPLS by using generic routing encapsulation.
MPLS over UDP is a type of network encapsulation that enables transfer of MPLS packets over an IP fabric. MPLS over UDP supports Layer 2 and Layer 3 overlays.
Multiprotocol Label Switching (MPLS) is a technique in high-speed networking environments that accelerates network traffic by allowing network packets to be transferred through the switching layer.
A multi-cloud environment refers to a collection of clouds that do not share any resources except, optionally, a common Identity back end.
A multi-region refers to the concept of shared cloud resources across multiple regions, where the resources can be any of the following: identity, storage, networking, orchestration. Replication of metadata and/or similar configuration across regions will result in a multi-region as well. Multiple clouds that, for example, only share an Identity back end, such as LDAP, but do not share any other configuration and clouds are completely different, are not a multi-region, but a multi-cloud.
MySQL is a relational database that is most frequently used in OpenStack deployments.