I would like a clarification on the correct implementation for Type 3 checking when dealing with WRPROTECT/RDPROTECT/VRPROTECT .

In SBC-3r07 clause 4.17.2.5 Type 3 protection states:

Type 3 protection:

a)      defines the content of the LOGICAL BLOCK GUARD field within the logical blocks of the data-in buffer and/or data-out buffer;

b)      does not define the content of the LOGICAL BLOCK APPLICATION TAG field; and

c)      does not define the content of the LOGICAL BLOCK REFERENCE TAG field.

However in the individual command descriptors, WRITE(10) for example, Table 71 — WRPROTECT field indicates that both the Application Tag and Reference Tag should be checked.

Since both of these DIF items are not defined for Type 3 protection, I assume that for Type 3 protected devices these fields should not be checked at all.

Can someone clarify?

Thanks in advance

__________________________________
Gary Franco Consultant Engineer
Emulex Network Systems
972-671-7433 Dallas Office
972-671-7435 Dallas Office Fax

720-652-6387 Longmont Colorado Office
720-494-1817 Longmont Colorado Office Fax
972-839-5694 Cell Phone

Today's Quote

Be who you are and say what you feel because those who mind don't matter and those who matter don't mind.
-Dr. Seuss

This message contains confidential information of Emulex Corporation intended only for listed recipients and should not be forwarded to anyone else. 

If you have received this message in error, please delete it immediately.  Thank you.