Like many, I was excited about the prospects of leveraging Windows 8 built-in Storage Spaces/Storage Pool functionality. I loaded 3 x 2TB 7200 RPM disks together only to be greatly disappointed by the performance. With Read/Write speed under 22MB, it would appear that running flash drives would be more effective. While Server 2012 has a more robust approach and speeds, I would place caution for those trying to leverage this functionality in Windows 8. I strongly recommend using Crystal Disk Mark to test the before/after performance of your disks to see if it will meet your requirements. Here is an article that also speaks to this issue: Storage Spaces Performance-Windows 8