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We had this idea opened for z/OS and HCD (https://ibm-z-hardware-and-operating-systems.ideas.ibm.com/ideas/ZOS-I-4129), but through cases TS017155124 and TS017074516, it was suggested to open an IDEA directed to the DS8Ks.
We use shared DASDs to transmit data between sysplexes. Currently, we have about 70 z/OS systems with more 70 backup lpars (CBU).
If we use 4 chpids to access those devices, that already reaches 4*140 = 560 paths to each LCU. We are moving towards a configuration where CBU lpars are defined with 3 chpids per LCU, and the tendency is going down.
/ 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.
Idea priority | High |
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