Seagate 77767496 Product Manual page 335

RelAdr (Relative Address)
219
This function is not supported by drives described in this manual.
Verification Length
219
The number of contiguous logical blocks of data that are verified. A Verification Length of zero indicates that no logical
blocks are verified (an Implied Seek is still performed). This condition is not considered an error. Any other value indicates
the number of logical blocks that are verified.
Fibre Channel Interface Manual, Rev. D 321