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

Conference noted::netware

Title:Novell NetWare
Moderator:NETCAD::STEFANI
Created:Wed Feb 27 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2146
Total number of notes:7285

2129.0. "Netware dropping buses" by DABEAN::B_ROSE () Tue Mar 11 1997 13:46

    Good morning...
    
    	I have a Netware 3.12 server that is showing some problems that I
    haven't been able to figure out.
    
    	This system is a DECpc XL 486/66D2. It has 94MByte RAM, and three
    NCR scsi buses (one embedded and two PCI). On the first (embedded) we
    have two RZ28-E drives. One the second we have two RZ28-VAs and two
    RZ29B-VAs (in a Digital 4 pack tower -- the model escapes me). On the
    third scsi we have a CD tower with seven SCSI CDs, but a smart
    controller showing the tower as one ID to the system.
    
    	At one point there were the four RZ28s and the CD tower and all was
    fine. We then added the two RZ29s (along with memory to get to the
    96MByte). The two RZ28s on scsi bus 2 mirro the two RZ28s on the
    embedded. The Rz29s are mirrors of themselves. With the RZ29s we start
    experiencing problems after about a week of uptime. The problem starts
    with the CDs dropping off line and then the internals dropping off
    line. We have stayed up in the past because the mirrors in the external
    box.
    
    	Last night the external drives had thier amber lights come on (well
    three of the four). This morning the CDs went down without a way of
    getting them back without a reboot. We are to reboot the server before
    the internal scsi drops off line. With a reboot I believe we'll get
    another week of problem free operation.
    
    	By the way at this point there is 74% of resources available or at
    least thats the indication.
    
    	The last thing we did to troubleshoot was replace the DECpc 486
    with a Celebris XL590 moving the memory etc from the DECpc to the
    XL590. Any possible fixes and suggestions would be appreciated.
    
    Thanks
    
    Bruce Rose
    
    RoseBr@mail.dec.com
T.RTitleUserPersonal
Name
DateLines
2129.1Any console errors?NEMAIL::HASLETTMon Mar 17 1997 14:4814
    Bruce,
    Are you getting any error messages on the console? If your 
    not sure load the conlog.nlm, you can print the text file 
    sys:etc\console.log to see if any errors were reported.
    
    Also, what is the bus speed set for the CD's scsi controller?
    You may want to try things like a lower scsi(CD) bus speed, 
    adjusting the bus master, IRQ settings and check your scsi 
    bus termination. Is there a tape drive hanging off of any of 
    these contollers ie. you may have gone beyond the bus length 
    limits when you added the new drives. 
    
    If it still fails you may also want to try some different scsi 
    controllers like Adaptec 2940.