Hey,
Storage Spaces support iSCSI LUNs. You can connect them to your host/PC and create pool. Check for more information: https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/deploy-standalone-storage-spaces
As another option, you can simply create a mdadm array on you Linux server and share it with your PC via iSCSI. You can also use StarWind VSAN (with ZFS or mdadm) and share storage via iSCSI via nice Web GUI. https://www.starwindsoftware.com/starwind-virtual-san
Cheers,
Alex Bykovskyi
StarWind Software
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