Is it possible or will there be any problems with using mdraid on top of mdraid? specifically say mdraid 1/5 on top of mdraid multipath. e.g. 4 storage machines exporting iSCSI targets via two different physical network switches then use multipath to create md block devices then use mdraid on these md block devices The purpose being the raid storage array surviving a physical network switch failure. In case of duplicates, for some reason the first post isn't showing up on the mailing list so I'm resending it.