An entertainment company with a very large movie library is moving all of its production systems to an IaaS cloud. The current lease is expiring in the next month, and the company made a last…

Offline storage migration requires systems to be unavailable during data transfer, which is unacceptable for production systems with a very large, active movie library.

Online storage migration allows for continuous data transfer while production systems remain operational, minimizing downtime for the large movie library and ensuring business continuity during a last-minute, time-sensitive move. This approach is critical for maintaining access to vast amounts of data without interruption.

Offline VM migration entails taking virtual machines offline, causing downtime that would disrupt access to the production movie library.

While online VM migration reduces VM downtime, the question specifically emphasizes moving the "very large movie library" and "all the data," making online storage migration a more direct and encompassing solution for the data itself.