Specifications

8.45 WRITE SAME (41h)
LINKFLAGReserved = 0VU=09
(MSB) Number of Blocks
(LSB)
7
8
Reserved = 06
(MSB)
Logical Block Address
(LSB)
2
3
4
5
RelAdr
=0
Reserved = 0Reserved = 01
Command Code = 41h0
01234567
Bit
Byte
Figure 175. WRITE SAME (41)
The Write Same command instructs the drive to write a single block of data transferred to the drive from
the initiator to a number of sequential logical blocks. This command is useful for writing large data areas
without sending all of the data over the SCSI bus.
! Logical Block Address specifies the address at which the write begins. The Number of Blocks spe-
cifies the number of contiguous blocks to be written. If the number is zero, all of the remaining blocks
on the specified Logical Unit are written.
!
!!
! RelAdr (Relative Block Address) is not supported and must be set to be ZERO.
The data for this command is not retained in the cache.
Ultrastar 146Z10 hard disk drive specifications
174