API—Application Programing Interface is a specification that defines how software components can interact.
BMC/iDRAC Enterprise—Baseboard management controller. An on-board microcontroller that monitors the system for critical events by communicating with various sensors on the system board, and sends alerts and log events when certain parameters exceed their preset thresholds.
BOSS— The Boot Optimized Storage Solution (BOSS) enables customers to segregate operating system and data on server-internal storage. This is helpful in the Hyper-Converged Infrastructure (HCI) and Software Defined Storage (SDS) arenas, to separate operating system drives from data drives, and implement hardware RAID mirroring (RAID1) for OS drives.
CDH—See http://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-145.pdf. Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.
Cluster—A set of servers dedicated to OpenStack that can be attached to multiple distribution switches.
Compute node—The hardware configuration that best supports the hypervisor server or Nova compute roles.
DevOps— Development Operations (DevOps) is an operational model for managing data centers using improved automated deployments, shortened lead times between fixes, and faster mean time to recovery. See https://en.wikipedia.org/wiki/DevOps.
DIMM—Dual In-line Memory Module.
DNS— The domain name system (DNS) defines how Internet domain names are located, and translated into Internet Protocol (IP) addresses.
FQDD— A fully qualified device descriptor (FQDD) is a method used to describe a particular component within a system or subsystem, and is used for system management and other purposes.
FQDN— A fully qualified domain name (FQDN) is the portion of an Internet Uniform Resource Locator (URL) that fully identifies the server to which an Internet request is addressed. The FQDN includes the second-level domain name, such as "dell.com", and any other levels as required.
GUI— Graphical User Interface. A visual interface for human interaction with the software, taking inputs and generating easy to understand visual outputs.
Hypervisor—Software that runs virtual machines (VMs).
IaaS—Infrastructure as a Service.
Infrastructure node—Systems that handle the control plane and deployment functions.
ISV—Independent Software Vendor.
JBOD—Just a Bunch of Disks.
LAG—Link Aggregation Group.
LOM—LAN on motherboard.
LVM—Logical Volume Management.
ML2—The Modular Layer 2 plug-in is a framework that allows OpenStack to utilize different layer 2 networking technologies
NFS— The Network File System (NFS) is a distributed filesystem that allows a computer user to access, manipulate, and store files on a remote computer, as though they resided on a local file directory.
NIC—Network Interface Card.
Node—One of the servers in the cluster.
NUMA—Non-Uniform Memory Access.
Overcloud—The functional cloud that is available to run guest VMs and workloads.
Pod—An installation comprised of three racks, and consisting of servers, storage, and networking.
REST— REST - Representational State Transfer (also ReST). Relies upon stateless, client-server, cacheable communications protocol to access the API.
RHOSP—Red Hat OpenStack Platform.
RPC—Remote Procedure Call.
SAH—The Solution Admin Host (SAH) is a physical server that supports VMs for the Undercloud machines needed for the cluster to be deployed and operated.
SDS—Software-defined storage (SDS) is an approach to computer data storage in which software is used to manage policy-based provisioning and management of data storage, independent of the underlying hardware.
SDN—Software-defined Network (SDN) is where the software will define, create, use and destroy different networks as needed.
Stamp—A stamp is the collection of all servers and network switches in the solution.
Storage Node—The hardware configuration that best supports SDS functions such as Red Hat Ceph storage.
ToR—Top-of-rack switch/router.
U— U used in the definition of the size of server, example 1U or 2U. A "U" is a unit of measure equal to 1.75 inches in height.
Undercloud—The Undercloud is the system used to control, deploy, and monitor the Overcloud - it is a single node OpenStack deployment completely under the administrators control. The Undercloud is not HA configured.
VLT—A Virtual Link Trunk (VLT) is the combined port channel between an attached device (ToR switch) and the VLT peer switches.
VLTi—A Virtual Link Trunk Interconnect (VLTi) is an interconnect used to synchronize states between the VLT peer switches. Both endpoints must be the same speed, i.e. 40Gb → 40Gb; 1G interfaces are not supported.
VM—Virtual Machine - a simulation of a computer system.