tl;dr version = with modern drive capacities and normal MTBF, you end up with a read error while resilvering after replacing a failed drive, but now you have 0 redundancy and so you lose your entire pool. These days RAID6 (or RAIDZ2) or don't bother since you're wasting money and not protecting yourself from anything when you actually go to depend on it.
Comments & Reviews (1)
Do a Google search on "RAID5 is dead".
tl;dr version = with modern drive capacities and normal MTBF, you end up with a read error while resilvering after replacing a failed drive, but now you have 0 redundancy and so you lose your entire pool. These days RAID6 (or RAIDZ2) or don't bother since you're wasting money and not protecting yourself from anything when you actually go to depend on it.
Thank you!