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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

6513.0. "8200,KZPSA, Out od SCSI ID's" by JULIET::SMITH_P () Tue Mar 25 1997 09:43

    I have a customer with dual AXP8200, these 8200 each have 2 KZPSA
    adapters connected to a BA35X shelf with 4 RZ29 disks in each.  All has
    been working fine.
    
    Customer added 2 more drives and the system states "Out of SCSI ID's".
    
    Illustrations
    
    
    _______                                                         ______
    |8200 |KZPSA--------Shelf DWZZB 4 going to 6 Drives--------KZPSA|8200|
    |_____|KZPSA--------Shelf DWZZB 4 going to 6 drives--------KZPSA|____|
    
    Originally this would have been ID 6+7 = Adapters, Drives would be
    0,1,2,3 - Now drives would be 0,1,2,3,4,5
    
    Paul
T.RTitleUserPersonal
Name		DateLines
6513.1Where is the DWZZB?SSDEVO::MARTENSQualification Program ManagerTue Mar 25 1997 09:508
    Paul,
    
    Where is the DWZZB installed? If its in slot 0 (where they suggest
    it be installed), then the problem would be the last drive is in
    slot 6, which is the same as the host adapter.
    
    Bert