Fiber Channel drives used the DIF part of the sector, reading 526 bytes per sector rather than 512. SATA based RAID systems will often use a separate sector in the group to hold individual sector checksums. So 16 sectors, where 15 are 'data' and the 16th is crc data.
All fiber channel HBAs can generate errors when the DIF don't correlate, its part of the FC spec. I don't have access to the LSI controller firmware source so I couldn't say one way or another if they do this with SATA drives. It should be possible to test though.
