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Allocated Space vs. Utilized Space in Integrated Storage

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Question

What is the difference between the allocated and utilized space in terms of Integrated Storage?

 

Environment

Any system utilizing Integrated Storage

 

Answer

Allocated space is the space that is allocated for vdisks. This space is equal to the size of all vdisk stripes on a backend node.

Utilized space is the space that is used as data is written to a vdisk. As a vdisk had data written, the space it consumes is reflected in the backend node utilization.