[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference ssag::ask_ssag

Title:Ask the Storage Architecture Group
Notice:Check out our web page at http://www-starch.shr.dec.com
Moderator:SSAG::TERZAN
Created:Wed Oct 15 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6756
Total number of notes:25276

6750.0. "RZ29B fault latched?" by TROFS::S_OSSOWSKI (STEPHEN OSSOWSKI @TRO) Wed Jun 04 1997 12:21

Posting here also. Any Ideas?
    
         <<< SSDEVO::DISK$NOTES:[NOTES$LIBRARY]HSZ40_PRODUCT.NOTE;1 >>>
                         -< HSZ40 Product Conference >-
================================================================================
Note 901.0                   RZ29B - fault latched?                   No replies
TROFS::S_OSSOWSKI "STEPHEN OSSOWSKI @TRO"            19 lines   4-JUN-1997 11:04
--------------------------------------------------------------------------------
    Is it possible(or allowed) that a disk fails(rz29b u0007) orange (fault)
    light on and it appears to continue functionning without being moved
    automatically to the failedset(hsz40 v3.1)? It was a mirror member within a
    stripeset (0+1). This caused confusion for the customer and a service
    engineer who went in for the repair. The host system (unix 3.2g) did
    log an event (UNIT ATTENTION - Medium changed or _target reset). The
    customer noticed an application would not run anymore(I don't have
    more detail) and led them to go and open the SW cab, discovering the
    fault light.
    
    Why would fault light remain lit and drive appear active(green flash)?
    Was it perhaps normalizing?. The mirroset status info was not recorded hence
    why I'm asking what's possible. Is this a power management issue related
    to f/w 0007 on rz29b's? Incidentally V3.1 of HSOF had just been
    installed 2 weeks prior, whether that means anything or not.
    
    Quick reply appreciated.
    
    Steve Ossowski
T.RTitleUserPersonal
Name		DateLines
6750.1SUBSYS::VIDIOT::PATENAUDEAsk your boss for ARRAY&#039;s...Wed Jun 04 1997 20:2613
    
    Yes.
    
    The AMBER led is NOT a function of the drive. It is driven from the
    controller. If the drive is runing fine and the LED is on, this jusst
    means the fault bus in not being driven (in the case of HSxx it is
    driven) or the termination on the bus is not correct.
    
    If using BA356's make sure you plug the cable into the correect port of
    the personality module.
    
    roger.
6750.2ba350TROFS::S_OSSOWSKISTEPHEN OSSOWSKI @TROThu Jun 05 1997 08:233
    This is a production config Using BA350 in SW500 w/HSZ40, has been
    running for at least 18 months. The latest change was V3.1 upgrade of
    HSOF.