Hi
I have a similar question like J_Rod: http://social.technet.microsoft.com/Forums/en-US/7a37e6ed-7e22-485c-a5d1-6460b2c4d63b/mimicing-raid-10-resiliency-with-storage-spaces?forum=windowsserverpreview
Why should I consider using more than 2 Columns in a 2 way mirror Storage Space? For me it makes little difference between a Storage Space with a 2 Column 2 Way Mirroring and a 6 Column 2 Way Mirroring on a 12 Disk Storage Pool (like in the Picture).
Apart from:
big write/reads which are processed by 6 disk in the 6 column configuration instead of 2 in the 2 column configuration
Filling of the disk is not synchron over all disk with the 2 column configuration
therefor i get exactly what I expect of the Storage Space when I use the 2 column configuration and try to achieve the same Result as a classic RAID10 (RAID 0 over X RAID1)
