In terms of scalability, what is a benefit of a stretch cluster configuration over a stand-alone configuration?

A stretch cluster configuration offers significant benefits in terms of scalability, particularly with respect to data risks. By spanning multiple locations, stretch clusters allow for improved data redundancy and availability. In contrast to a stand-alone configuration, which might be limited to a single site, a stretch cluster can continue operating even if one of the sites experiences a failure. This geographical distribution minimizes the risk of data loss due to localized incidents, such as natural disasters or power outages, thereby ensuring that data remains available and secure.

While some of the other choices touch on relevant points, they do not align with the benefits typically associated with stretch cluster configurations. For example, being a single point of failure is more characteristic of a stand-alone setup rather than an advantage of a stretch cluster. Additionally, lower maintenance costs and more robust hardware requirements are not inherently linked to the scalability advantages provided by a stretch cluster; in fact, stretch clusters might entail higher maintenance costs and require more sophisticated hardware due to their complex nature.

Overall, the advantage of reduced localized data risks is a compelling reason to choose a stretch cluster configuration for organizations looking to enhance their scalability and resilience.