On Saturday 27 March 2010 09:22, Ross Walker wrote:
for all practical purposes its the same thing. if it was really stripe then mirror, a naive mirror handler would think it would have to remirror both drives when one half of one of the stripesets failed and was replaced. but in fact, the mirror handlres tend to be well aware of whats going on. mirror 0+1 aand stripe that with mirrored 2+3, and its really all the same the native raid10 in newer mdraid is cleaner because you don't end up with extra partial volume metadevices...
RAID0+1 is never a good configuration because a single drive failure in a RAID0 stripe fails out the whole stripe, and with say an 4x2 RAID0+1, you are more likely to hit a disk failure with 4 drives in a RAID0 then 2 in a RAID1.
That's why RAID1+0 came about.
Thnx for clearing this up.