The normal answer here is to make sure that each side of the RAID10 (RAID01 is something different and much less common) mirror uses drives from a different vendor, thus giving each side a different bathtub curve / failure rate and mitigating the impact of a bad batch. This is a nice advantage over parity-based setups like RAID6 (since replicating this with RAID6 would require finding a unique vendor for each array member, and there are only so many vendors).

For archival purposes, though, you're probably better off with a normal RAID1 + some kind of JBOD setup (like with LVM); striping makes data recovery more difficult should you indeed lose all RAID1 sides of a given member.