Protection Modes in SCSI devices

[Gerry.Houlder at seagate.com]

* From the T10 Reflector (t10 at t10.org), posted by:
* Gerry.Houlder at seagate.com
*
Like all INQUIRY bits, these bits are set by the SCSI device to indicate
its capability for the function. These will always be set in a device that
is capable of supporting the function. To tell whether the capability has
been invoked or not you must use READ CAPACITY(16) and interpret the bits
returned there.
	     Gary.Franco at emule						   
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				       Protection Modes in SCSI devices    
	     06/12/2006 09:34						   
	     AM 							   
All,
I have a question with regard to the discussion in SPC4r04
In clause 7.6.4 Extended INQUIRY Data VPD page, there are 3 bits discussed
      GRD_CHK,
      APP_CHK and
      REF_CHK
They are defined as far as their meaning, but never discussed how they are
set. Is this part of the format process, or simply the capability of the
device firmware or design?
Any Help?
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Gary Franco Consultant Engineer
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