hi Hans! well, this was discussed some times here, and i tested something like it well if you want more secure disk, use raid 1,5,6 if you want speed use cache (bcache, flashcache, dm cache) the write behind will not give a lot of speed, i think that a raid1 with hdd + ssd as cache is better, but didn't tested yet, i have a revodrive here, and it have two devices (sda/sdb) this could allow a raid1-hdd raid1-ssd and give secure at cache side... maybe others guves have more ideas here... Sans told me to buy a raid hardware with cache and bbu, it's better than a raid1 + sdd as cache, i didn't cehcked yet... but probably i will do 2013/9/28 Hans Kraus <hans@xxxxxxxxxxxxxx>: > > Am 28.09.2013 17:28, schrieb Roberto Spadim: >> what hybrid means? >> [...] > > An SSD and a conventional HD as mdadm Raid 1, the conventional HD > added with '--write-behind --write-mostly' during the mdadm create. > > Regards, Hans > > (Sorry, forgot the list during my first reply) > > > -- > 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 -- Roberto Spadim -- 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
