What is one of the challenges when data is located at multiple sites?

When data is located at multiple sites, one of the key challenges that arises is the difficulty in managing the data. This challenge stems from various factors including the need to ensure consistent data formats, integrate disparate data sources, synchronize updates, and maintain accessibility across different locations. Effective data management requires ensuring proper governance, security, and usability of the data, which can become increasingly complex as the number of sites and data sources grows.

Managing data across multiple sites involves handling variations in technology, communication protocols, and possibly differing regulatory compliance requirements. This complexity can lead to significant overhead in operational processes, making it difficult to derive actionable insights or maintain a unified view of the data.

While other challenges like data redundancy, historization, and data quality are important aspects to consider, they are often secondary to the overarching issue of effectively managing the data landscape in a distributed environment.