On 2014-03-14 09:46, George Mitchell wrote: > Actually, an interesting concept would be to have the initial two drive > RAID 1 mirrored by 2 additional drives in 4-way configuration on a > second machine at a remote location on a private high speed network with > both machines up 24/7. In that case, if such a configuration would > work, either machine could be obliterated and the data would survive > fully intact in full duplex mode. It would just need to be remounted > from the backup system and away it goes. Just thinking of interesting > possibilities with n-way mirroring. Oh how I would love to have n-way > mirroring to play with! That can already be done, albeit slightly differently by stacking btrfs RAID 1 on top of a pair of DRBD devices. Of course, this doesn't provide quite the same degree of safety as your suggestion, but it does work (and DRBD makes the remote copy write-mostly for the local system automatically). -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
