Quantum 10K II - Manual (Page 301)

SCSI Description
5–234 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
XPWRITE (10) Command (51h) (continued)
Table 5–109 XPWRITE (10) Command — Field Descriptions (continued)
Field Description
Logical Block Address Specifies the address of the first logical block from
which to read data from its medium and the first
logical sector to which to write the XOR data back to
its medium.
Transfer Length Specifies the number of contiguous logical blocks to
write. The drive returns CHECK CONDITION status with
the correct sense data if the specified transfer will
cause the WRITE operation to extend beyond the
Logical Block Address space.