Request Sense and Ignore Wide Residue

Eric Swartz eric at
Mon Aug 14 11:44:33 PDT 1995

>I have noticed different behavior on two different wide drives I have and 
>from the spec can't tell which one is correct, or if both are correct. It 
occurs when the initiator sends a REQUEST SENSE command with an Allocation 
Length of 0x0D (13 decimal) to a wide target.  16-bit wide has been 
previously negotiated with an exchange of WDTR messages.


In our experience, the device should respond with 14 bytes and the IGNORE 
WIDE RESIDUE message. This is also clearly stated in section 6.6.8 of the 
SCSI II standard.

Eric Swartz

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