Clarification on SES-3 OTHER ELEMENT INDEX

Alan Westbury Alan_Westbury at xyratex.com
Fri Aug 12 12:52:05 PDT 2011


* From the T10 Reflector (t10 at t10.org), posted by:
* "Alan Westbury" <Alan_Westbury at xyratex.com>
*
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<DIV dir=3Dltr id=3DidOWAReplyText97459>=0A=
<DIV dir=3Dltr><FONT color=3D#000000 size=3D2 =
face=3DArial>Rob,</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT size=3D2 face=3DArial></FONT>&nbsp;</DIV>=0A=
<DIV dir=3Dltr><FONT size=3D2 face=3DArial>That makes sense, but would =
you agree then that the current wording is misleading?</FONT></DIV>=0A=
<DIV dir=3Dltr><BR>=0A=
<HR tabIndex=3D-1>=0A=
<FONT size=3D2 face=3DTahoma><B>From:</B> Elliott, Robert (Server =
Storage) [mailto:Elliott at hp.com]<BR><B>Sent:</B> Fri 12/08/2011 =
17:33<BR><B>To:</B> Alan Westbury; t10 at t10.org<BR><B>Subject:</B> RE: =
Clarification on SES-3 OTHER ELEMENT INDEX<BR></FONT><BR></DIV></DIV>=0A=
<DIV>=0A=
<DIV class=3DWordSection1>=0A=
<P class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">All the element =
index fields are absolute... it's not the index relative to only certain =
types.</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d"></SPAN>&nbsp;</P>=0A=
<DIV>=0A=
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#b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">=0A=
<P class=3DMsoNormal><B><SPAN style=3D"FONT-SIZE: =
10pt">From:</SPAN></B><SPAN style=3D"FONT-SIZE: 10pt"> owner-t10 at t10.org =
[mailto:owner-t10 at t10.org] <B>On Behalf Of </B>Alan =
Westbury<BR><B>Sent:</B> Friday, 12 August, 2011 9:30 AM<BR><B>To:</B> =
t10 at t10.org<BR><B>Subject:</B> Clarification on SES-3 OTHER ELEMENT =
INDEX</SPAN></P></DIV></DIV>=0A=
<P class=3DMsoNormal>&nbsp;</P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB>Hi T10,</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB>We are looking at the definition =
of the OTHER ELEMENT INDEX field as used in the Additional Element =
Status diagnostic page.</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB>This field is used in the =
Expander Phy Descriptor (and Phy Descriptor for the SCSI Intiator/Target =
Ports) and is described as follows:</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P style=3D"MARGIN-LEFT: 0.5in" class=3DMsoNormal><SPAN =
lang=3DEN-GB>&#8220;The OTHER ELEMENT INDEX field indicates the index of =
a Device Slot element (see 7.3.2), Array Device Slot element (see =
7.3.3), SAS Expander element (see 7.3.25), SCSI Initiator Port element =
(see 7.3.23), SCSI Target Port element (see 7.3.22), or Enclosure =
Services Controller Electronics element (see 7.3.9) to which the =
expander phy is attached. If the expander phy is not attached to one of =
those elements, then the OTHER ELEMENT INDEX field shall be set to =
FFh.&#8221;</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB>My question is how is the =
application client supposed to determine the type of the Other =
Element?&nbsp; In other words if the OTHER ELEMENT INDEX has a value of =
N &#8211; is that the (N+1)th Array Device Slot element, SAS expander =
element etc?</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB>Wouldn&#8217;t it be better if =
the definition was along the lines of the ELEMENT INDEX used elsewhere =
in this page?</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P style=3D"MARGIN-LEFT: 0.5in" class=3DMsoNormal><SPAN =
lang=3DEN-GB>&#8220;The ELEMENT INDEX field indicates the index of the =
status element that this descriptor is describing. The index is based on =
the position of the status element in the Enclosure Status diagnostic =
pages (see 6.1.4) relative to all other individual status elements. It =
does not include the overall status elements.&#8221;</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB>Thanks and Regards,</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB>Alan</SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><B><SPAN style=3D"COLOR: navy" =
lang=3DEN-GB>---</SPAN></B><SPAN lang=3DEN-GB></SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><B><U><SPAN style=3D"COLOR: navy; FONT-SIZE: =
13.5pt" lang=3DEN-GB>Alan Westbury</SPAN></U></B><SPAN =
lang=3DEN-GB></SPAN></P>=0A=
<P class=3DMsoNormal><SPAN style=3D"COLOR: navy" lang=3DEN-GB>Product =
Architect</SPAN><SPAN lang=3DEN-GB></SPAN></P>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P>=0A=
<P class=3DMsoNormal><B><SPAN style=3D"COLOR: navy" =
lang=3DEN-GB>Xyratex</SPAN></B><SPAN lang=3DEN-GB></SPAN></P>=0A=
<DIV>=0A=
<P class=3DMsoNormal><SPAN style=3D"COLOR: navy" lang=3DEN-GB>Storage =
Systems,&nbsp;</SPAN><SPAN lang=3DEN-GB></SPAN></P></DIV>=0A=
<DIV>=0A=
<P class=3DMsoNormal><SPAN style=3D"COLOR: navy; FONT-SIZE: 10pt" =
lang=3DEN-GB>Langstone Road, Havant, PO9 1SA</SPAN><SPAN =
lang=3DEN-GB></SPAN></P></DIV>=0A=
<DIV>=0A=
<P class=3DMsoNormal><SPAN style=3D"COLOR: navy; FONT-SIZE: 10pt" =
lang=3DEN-GB>United Kingdom</SPAN><SPAN lang=3DEN-GB></SPAN></P></DIV>=0A=
<DIV>=0A=
<P class=3DMsoNormal><SPAN lang=3DEN-GB></SPAN>&nbsp;</P></DIV>=0A=
<P class=3DMsoNormal><SPAN style=3D"COLOR: navy; FONT-SIZE: 10pt" =
lang=3DEN-GB>Email: <A title=3Dmailto:jchan at xyratex.com =
href=3D"mailto:alan_westbury at xyratex.com">alan_westbury at xyratex.com<B=
R><A title=3Dhttp://www.xyratex.com/ =
href=3D""></SPAN><SPAN">http://www.xyratex.com</SPAN><SPAN lang=3DEN-GB></SPAN></P>=0A=
<P class=3DMsoNormal><SPAN =
lang=3DEN-GB></SPAN>&nbsp;</P><PRE>&nbsp;</PRE></DIV></DIV></BODY></HTML>
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