The product is a dual-ended system with the Core at the data center and an Edge-enabled appliance at the branch. Edge features an on-disk local cache that mirrors the complete persistent storage on the Core-side logical unit number(s) (LUNs). After pairing an Edge with a Core, you must make all configuration changes on the Core.

To enable Edge high availability, you configure one Edge appliance to connect to the Core appliance. The Edge appliance works as a single-edge configuration. You configure another Edge appliance as a peer to the Edge appliance already connected to the Core. This results in the first Edge appliance becoming the active Edge (exposing the active iSCSI paths), and the second Edge appliance acts as the failover peer.