1. A method comprising: amplifying a write transaction, the amplification including at least three levels of replication; issuing a first read transaction to a first data block at a first replication level, including computing a first checksum on a first read block of the first read transaction; issuing a second read checksum on the first read block of the first read transaction at a second replication level; and comparing the first checksum and the second checksum, including serving data associated with the first read transaction if a match of the first and second checksums is returned and issuing a third read checksum on the first read block of the first read transaction at a third replication level if the match is not returned.