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Conference 44.370::system_management

Title:system management communications forum
Moderator:CHEST::THOMPSON
Created:Fri Mar 21 1986
Last Modified:Thu Jul 08 1993
Last Successful Update:Fri Jun 06 1997
Number of topics:490
Total number of notes:2018

94.0. "Down Again!!!!! AAaaaarrggg!!!" by RDGE28::SMITH_I (Fast as a Mamba, Brave as a Lion!) Thu Nov 26 1987 06:12

    
    Why is it that thursday mornings are so fraught?  Can it be because
    when I arrive for work, between 7:30 and 8:00 am, there is a strong
    possibility of the ADG cluster being down, or in some way deficient?
    
    What could the reasons for this possibly be?  Why thursdays?  Could
    it have something to do with wednesday night being the dreaded 'backup'
    night?  It's highly frustrating to arrive for work, and not be able to do
    any!  Please can SOMEONE try to do something to prevent this happening
    just about every week?
    
    Ian  
            
    
T.RTitleUserPersonal
Name
DateLines
94.1me tooFOOT::BROWNSTONEout to lunchThu Nov 26 1987 16:393
    I'll second that !
    
    Chris
94.2I have a lie-in on Thursdays now.RDGE00::RUSSELLDick Dastardly was misunderstood.Fri Nov 27 1987 10:447
    I've stopped coming in early on Thursday's for exactly this reason.
    
    Over a four week period recently, the cluster was not available
    early on Thursdays for three weeks.
    
    Peter.
    
94.3Used tenners will do nicely Sir!HEAD::THOMPSONFri Nov 27 1987 16:2323
    Last week the ADG cluster was down on Thursday morning because backups
    hadn't been completed by 11:00pm the previous evening. Is ops are
    longer prepared to work overtime to finish the backups and so the
    machines were left down for the morning shift to complete them.
    
    In fact System management came in early the following morning to
    finish them of asap.
    
    As a result of this I modified the system startup files to introduce
    volume shadowing following the next reboot. What I didn't realize
    at the time is that the volume shadowing licence key hadn't been
    installed. So when the machines were rebooted on Wed evening not
    all the disks mounted. So at midnight on Wednesday I copied the
    old systartup file back and tried a reboot. 
    
    Unfortunately I made a mistaek, and copied the old file into
    sys$specific instead of sys$common. These things tend to happen
    around midnight!
    
    That's the explanation. So what's the fix? Well, if you'd care to
    donate a small percentage of your pay to either myself or IS operations
    I'm sure some arrangement could be reached to give you a 24hour
    service.
94.4more, more, moreSTOPIT::GARLANDHoward GARLAND, ADG, 830-6287Thu Dec 03 1987 09:219
>    Why is it that thursday mornings are so fraught?  Can it be because
>    when I arrive for work, between 7:30 and 8:00 am, there is a strong
>    possibility of the ADG cluster being down, or in some way deficient?

In recognition of an improvement....

...the ADG cluster was working fine this morning when I logged in at 8:30.

Thanks
94.5Picky, picky.RDGE00::RUSSELLEvery which way but homeThu Dec 03 1987 09:2813
  >the ADG cluster was working fine this morning when I logged in at 8:30.

    Well, yes, but if you had logged in at 8:15, the system time
    was actually set for 6:15.
    
    This caused me a very serious problem, as my batch job to update
    my notes hadn't run, since it kicks off at 7:00.	:^)
    
    But at least it was there!!!
    
    Peter.
    
94.6Clockwork processors?FOOT::THOMPSONTue Dec 15 1987 11:555
    The wrong time is a feature of the 8530 processors as far as I can
    determine. I'll ask the IS operators to check that the system time
    is right after standalone backups. 
    
    PS - This is also a problem on RSTS 9.4 ethernet clusters.
94.7RSTS Clusters? Pardon?RDGE00::RUSSELLMerry Christmas! Ho Ho Ho!Tue Dec 15 1987 18:4711
	re Note 94.6               
        
    >PS - This is also a problem on RSTS 9.4 ethernet clusters.

    Ummm, Jerry, please can I cluster my micro PDP running RSTS 9.4
    with something? I must have missed that product announcement...
    
    We obviously need an atomic clock to regulate all this stuff.
    
    Peter.