Final answer:
Zone-redundant storage (ZRS) is a data storage solution that ensures data accessibility if a single data center fails, but it doesn't safeguard against large regional outages which require geo-redundant storage (GRS).
Step-by-step explanation:
The solution described in the question is known as zone-redundant storage (ZRS), which is a type of data storage solution used in cloud computing environments. ZRS maintains multiple copies of data across separate data centers within the same region. Its design goal is to ensure that data remains accessible even if one data center in the zone becomes unavailable, such as due to natural disasters or system failures. However, ZRS does not provide protection against large-scale events affecting an entire region or geographic area - that would require a geographically redundant storage solution, typically referred to as geo-redundant storage (GRS).