What is the minimum amount of extra disk capacity required to accommodate extending the volume?

You create a Storage Spaces Direct hyper-converged failover cluster. The cluster contains three nodes and a 1-TB Storage Spaces Direct volume.
The cluster will store virtual machines.
You plan to extend the volume by adding an additional 3 TB.
What is the minimum amount of extra disk capacity required to accommodate extending the volume?
A. 3TB on the coordinator node
B. 3 TB per node
C. 4 TB per node
D. 4 TB on the coordinator node

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4 thoughts on “What is the minimum amount of extra disk capacity required to accommodate extending the volume?

  1. Answer B?
    In a cluster with 3 servers, the default disk layout is 3-way mirror. That means a 3TB increase should cost you 9TB footprint increase, or 3TB per node. If you just add 3TB hard drive, you won’t get an additional 3TB in your S2D volume.

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