<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">I've yet to see any specific issue root caused to be different OS versions between servers in a cluster.<DIV><BR class="khtml-block-placeholder"></DIV><DIV>different CM versions will cause problems</DIV><DIV>different SQL versions will cause problems.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>/Wes<BR><DIV><DIV>On Jul 18, 2006, at 7:59 PM, Ed Leatherman wrote:</DIV><BR class="Apple-interchange-newline">My question, to which I dont have an answer but i'm sure someone else on the list does: is there any ramifications to running different OS levels across your cluster during your upgrade process (assuming several days to update all the nodes in your systems then at 1 per day) <BR><BR>Also, which server is your TFTP server, or do you have several. not sure how much of the phones configurations they store incase they cant talk to a service.<BR><BR>Personally, i'd be just waiting for the rest of the cluster to implode that same day... murphies law and all that :) <BR><BR><DIV><SPAN class="gmail_quote">On 7/18/06, <B class="gmail_sendername">Lelio Fulgenzi</B> <<A href="mailto:lelio@uoguelph.ca">lelio@uoguelph.ca</A>> wrote:</SPAN><BLOCKQUOTE class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <DIV> <DIV bgcolor="#ffffff"> <DIV><FONT size="2">Just wondering if anyone has tried updating the O/S on a subscriber during business hours, obviously after stopping the CallManager service and forcing phones to register to another subscriber first. </FONT><FONT size="2">Our goal is to try an minimize the amount of after hours work that is involved in maintaining this new fancy system of ours. </FONT></DIV> <DIV><FONT size="2"></FONT> </DIV> <DIV><FONT size="2">Ideally, we'd see the following happening:</FONT></DIV> <UL> <LI><FONT size="2">stop callmanager services and have phones register to another subscriber during a short maintenance window</FONT></LI> <LI><FONT size="2">update O/S during the day</FONT></LI> <LI><FONT size="2">start callmanager services during a short maintenance window</FONT></LI></UL> <DIV><FONT size="2">Some questions:</FONT></DIV> <UL> <LI><FONT size="2">are there any other services we should stop to make this as transparent as possible?</FONT></LI> <LI><FONT size="2">does the </FONT><A name="10c827b018d13ae3_MaxStationsInitPerSecond"><B><FONT size="2">Maximum Phone Fallback Queue Depth </FONT></B></A><FONT size="2">service parameter help in any way in getting phones to register quicker on the next callmanager in line?</FONT></LI></UL> <DIV><FONT size="2">Any comments would be extremely welcome.</FONT></DIV> <DIV> </DIV> <DIV><FONT size="2">--------------------------------------------------------------------------------<BR>Lelio Fulgenzi, B.A.<BR>Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<BR>(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<BR>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ <BR>"I can eat fifty eggs." "Nobody can eat fifty eggs."</FONT></DIV></DIV> </DIV><BR>_______________________________________________<BR>cisco-voip mailing list<BR><A onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</A><BR> <A onclick="return top.js.OpenExtLink(window,event,this)" href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</A><BR><BR><BR></BLOCKQUOTE></DIV><BR> <BR clear="all"><BR>-- <BR>Ed Leatherman<BR>IP Telephony Coordinator<BR>West Virginia University<BR>Telecommunications and Network Operations<DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">cisco-voip mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</A></DIV> </DIV><BR></DIV></BODY></HTML>