You have an Azure subscription that contains an eight-node Storage Spaces Direct cluster named cluster1 and an Azure Virtual Desktop host pool named Pool1. The session hosts in Pool store FSLogix…

Two node failures are within the tolerance, but not the maximum for an eight-node cluster with robust redundancy like three-way mirroring.

Three node failures are within the tolerance, but not the maximum for an eight-node cluster with robust redundancy like three-way mirroring.

A Storage Spaces Direct cluster with eight nodes, typically configured for three-way mirroring for high availability, can tolerate up to two simultaneous disk failures per volume, or in terms of nodes, can withstand the failure of up to four nodes while maintaining data availability. With three-way mirroring, data is written to three copies, allowing for the failure of at least two nodes for each copy, which translates to potentially half the nodes in a large cluster.

Five node failures would likely exceed the redundancy capabilities of an eight-node Storage Spaces Direct cluster, even with three-way mirroring.