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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

6616.0. "KZPSC SWXCR Misc errors" by ACISS2::MILLER () Wed Apr 23 1997 14:02

    A customer has just deployed several Alphaserver 4000's with KZPSC, 
    BA356's and RZ28D's running VMS. He has started the online SWXCR
    monitor utility and is receving several "SWXCR Miscellaneous errors"
    per day on several of the systems. I don't have all the details
    yet-most systems are remote from the host site, but the local one is
    complaining about CH0-1 and CH1-1 which are member A-0 and A-1 of a 5
    member RAID-5 set. Both are connected to a KZPSC from JA1 of a BA356
    rackmount with a BN31S-1E cable. By the way, these are -VW drives.
    
    Before I schedule downtime to check KZPSC (V2.42) and RZ28D (0010) 
    firmware and maybe swap one of the suspect drives, is there anything 
    else I could be checking? I find it strange that several of these new 
    installs are failing this way. Another thing I have noticed, is when 
    you power the 4000 off/on (the BA356's are still powered up), many times 
    some fault LEDS on the disks will come on and stay on even though they 
    are working OK. This seems to happen more on the RZ26N-VW's that are 
    configured on the systems.
    
    I can provide more detail on the config, but it's basically three
    BA356's (one per KZPSC channel), 4-RZ28D-VW's and one RZ26N-VW per
    shelf. (I may be off a quantity of drive or two, but they're all wide
    and appear to be OK for SCSI length, etc.)
    
    Thanks for the help.
    
    Dale
    
                                              
     
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6616.1Correction to disk IDACISS2::MILLERWed Apr 23 1997 14:097
    Just looked at my base note, the disks erroring with "misc error" are
    at CH0-0 and CH1-0. I also understand the "misc error" as a SCSI bus
    type error-either drive timeout/busy or other related condition.
    
    Dale