iSCSI:SCSI Mode Pages

["Sanjeev Bhagat \(TRIPACE/Zoetermeer\)" <iscsi_t10@sanjeevbhagat.com>]

I have a query regarding section 3.1.2 EMDP mode parameter. Current text
says

3.1.2 E - Enable Modify Data Pointers Bit (EMDP)


......

If EMDP is set to 1, Data PDU sequences may be transferred in any order. If
EMDP is set to 0, Data PDU sequences MUST be transferred using continuously
increasing offsets.


Does this line mean that if EMDP=1 the out of order received data PDUs by
the iSCSI target be transferred directly to the actual SCSI LU (say a HDD)

or

does it mean that the if EMDP=1 the out of order received data PDUs be
stored in some external buffer provided by SCSI LU and re-assembled and
ordered there before transferring it into the SCSI LU.

Regards,

Sanjeev