Out of the striping options available for the EBS volumes, which one has the following disadvantage:’Doubles the amount of I/O required from the instance to EBS compared to RAID 0, because you’re mirroring all writes to a pair of volumes, limiting how much you can stripe?

Explanations:

RAID 1 is a mirroring configuration, where data is written to two identical volumes. This doesn’t double the I/O for writes to EBS compared to RAID 0, as the write operation occurs once to both disks.

RAID 0 is a striping configuration where data is split across multiple volumes, offering improved performance. It does not mirror writes, so there is no doubling of I/O like in RAID 1.

RAID 1+0 (RAID 10) combines RAID 1 (mirroring) and RAID 0 (striping). It mirrors writes to pairs of disks, and then stripes the data across those pairs. This requires more I/O compared to RAID 0 because it involves both mirroring and striping.

RAID 2 is an outdated configuration that uses bit-level striping with Hamming code parity. It does not involve mirroring and does not exhibit the doubling of I/O as described.