On Friday, March 26, 2010 09:12 AM, John R Pierce wrote: > Christopher Chan wrote: >>> but with RAID 10, data is safe after many types of failures. >>> >> >> Except for the case when a mirror dies after which the whole thing is >> toast but in theory you can survive up to four disks going down. >> > > if you have a 8 drive raid1+0, and a random drive fails, you can survive > any other drive failing *except* the mirror of the failed one. so if a That's what I said right? I did not say when a mirror is broken... > second drive fails, there's only a 1 in 7 chance that its the 'fatal' > one. on a 4 drive raid10, its a 1 in 3 chance. meanwhile, a raid10 > can rebuild from a hotspare in like an hour, if the system isn't busy, > and a few hours in the background if its busy and active. yeah, I thought the raid10 module would be able to rebuild automatically from a hotspare and would therefore be better than using nested raid1+0. I better stop the nested raid1+0 thing...does ananconda support the raid10 module during install yet? I mean rather, is the raid10 module included in the installation initrd yet?