On 2011-01-26 16:39, Roberto Spadim wrote: > i don't know what layout does, but, does raid1 have layout? No, only raid10 has different layouts. For an explanation, see David's mail, or take a look at the Wikipedia entry for non-standard RAID levels, it illustrates the idea of the different layouts quite well, IMO: http://en.wikipedia.org/wiki/Non-standard_RAID_levels#Linux_MD_RAID_10 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html