Final answer:
A logical container that combines multiple physical disks into one unit is referred to as a 'storage space,' a key concept in modern computing for efficient data management.
Step-by-step explanation:
A storage unit that acts as a logical container grouping multiple physical disks is commonly referred to as a storage space. This term describes how several physical disks can be combined to create a larger, virtualized storage environment that can provide redundancy, improved performance, and more efficient disk utilization. Operating systems such as Windows utilize this feature, known as Storage Spaces, to allow users to manage their physical disks as if they were a single unit, making this an important concept in modern computing and data management.