Although everyone wants high availability from IT systems, the cost to achieve it must be weighed against the benefits. This episode of Utilizing Edge focuses on HA solutions at the edge with Bruce Kornfeld of StorMagic, Alastair Cooke, and Stephen Foskett. Although it might be tempting to build the same infrastructure at the edge as in the data center, but this can get very expensive. Thinking about multi-node server clusters and RAID storage, the risk of a so-called split brain means not just two nodes but three must be deployed in most cases. StorMagic addresses this issue in a novel way, with a remote node providing a quorum witness and reducing the need for on-site hardware. Edge infrastructure also relies on so-called hyperconverged systems, which use software to create advanced services on simple and inexpensive hardware.
