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Status Future consideration
Workspace z/OS
Created by Guest
Created on Jun 19, 2024

Increase logical paths limit of 512 for Control Unit (HCD message CBDG085I)

We reached the limit of 512 paths for Control Units when disks are shared between multiple sysplexes. 

DASD volumes are being forced to be accessed by 3 and even 2 channel paths.

Idea priority High
  • Guest
    Reply
    |
    Jun 25, 2024
    ... transferring this requirement to the DFSMS team ...
  • Guest
    Reply
    |
    Jun 21, 2024

    Hi,

    The message we receive is:

    / Sev Msg. ID  Message Text                                          
    _ W   CBDG085I The number of 520 logical paths exceeds the maximum of
    #              512 for CU 6B09. The CU type has a minimum group      
    #              attachment value of 2.   

    CU type is 2107. Storage Server is an IBM DS8950F.

    CU   Type +        CUADD CSS MC  Serial-# + Description                     
    6B09 2107          C     34      L****      DS8950 

    Best regards, 

    Rafael Valença

     

     

  • Guest
    Reply
    |
    Jun 21, 2024
    Hello Rafael,

    thanks for your input to improve HCD.

    We discussed your scenario and were wondering:
    which CU type and storage server causes this error message ?

    Thanks in advance.

    Kind regards,
    Your HCD Team