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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

2861.0. "HUBwatch 3.1 & Fans??" by SWANDC::MAUTZ (Networks >= to DECnet) Fri Oct 13 1995 19:33

    I have a customer running HUBwatch V3.1 on WFG3.11, unfortunately,
    I don't have the hub firmware version.
    
    On a HUB900 he as:
    
    	slot		module
    	6		server900TM
    	7		repeater900TM
    	8		switch900EF
    
    On HUBwatch's environmental display the fan indicators show
    
    	6		1 left green fans and the right 2 are grey
    	7		2 left green fans and the right 1 is grey
    	8		all 3 fans are green
    
    All three modules show normal temp.  Don't all of these moduls
    have 3 fans?  Shouldn't they all be painted green?
    
    Thanks,
    
    Richard
T.RTitleUserPersonal
Name		DateLines
2861.1fans and hubwatchJULIET::WENGER_GESun Oct 15 1995 22:407
    Richard,
    
    If something is not support or in this case not there then hubwatch
    greys out the display.  terminal servers have one fan, higher end
    modules like switches haw three.  
    
    Georgia
2861.2NETCAD::THAYERMon Oct 16 1995 11:236
	server900TM 	has 1 fan (in the middle of 3 fan positions)
	repeater900TM	has 2 fans (in the middle & rearward positions)
	switch900EF	has 3 fans

			John
2861.3I needed to RTFMC!!SWANDC::MAUTZNetworks >= to DECnetMon Oct 16 1995 16:0711
    RTFMC= Read The Fine Manuals CAREFULLY!
    
    Thanks, everyone!  Based on your input, I realized that I had
    miss-understood some things I read - bad memory, maybe.  I thought
    I'd read some where that all three of these modules had 3 fans
    each.
    
    Regards,
    
    Richard
2861.4NETCAD::THAYERTue Oct 17 1995 09:0611
	The theory is that all modules will have at least two
	fans, to provide for redundancy should 1 fan fail.
	If power dissipation is high, the third fan can be
	added.

	Somehow the low power/low cost terminal servers
	slipped out without the redundant fan.


				John