I dont understand this - is there a difference between an explicitly allocated EBS volume and the ephemeral volumes of an EBS-backed instance ?
Or are you focusing on the RAID10 part - but then everywhere RAID10 is touted to be the best RAID solution (right balance between performance and safety)
Or are you focusing on the RAID10 part - but then everywhere RAID10 is touted to be the best RAID solution (right balance between performance and safety)