Image Streamer appliance terminology

An HPE Synergy Composer domain can have multiple Image Streamer appliance pairs. An Image Streamer appliance pair serves a single logical enclosure, and a single logical enclosure can have at most one Image Streamer appliance pair. One Image Streamer appliance pair is designated as the primary appliance pair, and all other appliance pairs are designated as secondary appliance pairs.

For an Image Streamer appliance pair,

An Active-Standby management cluster serves the artifact management and OS deployment functions.
An Active-Active storage cluster serves the OS volume storage.

All Image Streamer appliances managed by an HPE OneView instance operate as one deployment server. The Image Streamer deployment server acts as a single interface for management of all Image Streamer appliance pairs including deployment and capture of OS volumes residing in any appliance pair. It also manages the artifacts that provide details about for deployment and capture and replicates the artifacts on multiple appliance pairs when needed.

A special single frame configuration with one Image Streamer can be used for development or testing environments. Hewlett Packard Enterprise requires a three frame configuration as a minimum for production environment. The following list describes the appliance and cluster concepts:

Image Streamer appliance: An individual HPE Synergy Image Streamer module placed in HPE Synergy frames or a pair of Image Streamer modules that function together to form a highly available redundant pair.
Primary Image Streamer appliance: The primary appliance pair for a deployment server. The primary appliance pair is responsible for managing the server deployment, creating artifacts, and providing storage for the OS volumes for the compute modules in its logical enclosure.
Secondary Image Streamer appliance: The secondary appliance pair provides storage for the OS volumes for the compute modules in its logical enclosure. If the primary appliance becomes unavailable, the Infrastructure administrator can designate a secondary appliance as the primary appliance to manage the deployment process.
Primary active Image Streamer appliance: This appliance provides the deployment server user interface, artifact management, and deployment control. You can assign the primary appliance.
Primary standby Image Streamer appliance: When an active appliance becomes unavailable, the standby appliance takes over the management function of the active appliance and becomes the active appliance.

The secondary appliances contain a copy of artifacts as available on the primary appliance and assist with deployment of OS volumes. If required, the standby appliances provide redundant artifact storage and deployment functionality. Standby appliances also have an active OS volume storage.