The result of this criteria not being met is partial writes, which involves a read, a merge of the data to be written with the data read, and then writing the result to a new block. If the SAN block a...The result of this criteria not being met is partial writes, which involves a read, a merge of the data to be written with the data read, and then writing the result to a new block. If the SAN block arrives misaligned, starting in the middle of a WAFL block as seen in the above operation which starts in bucket 5 of the first WAFL block, that operation is considered to be misaligned and this operation will show up in write_align_histo.5 (bucket 5).