John Dawes wrote: >Thanks Elardus.
You're most welcome! ;-) First thing first - perhaps you should remove that command from the batch job you discovered. >What does "Host view is consistent with subsystem view of control unit and >device function status.' I am unable to understand IBM speak. Neither me... >Could you elaborate or give an example as to what it means? I wish I could elaborate on that, but as a previous storage admin + MVS admin, I remember that during the configuration of the devices and later VARY ONLINE, somehow the definition of the control units and their devices are placed somewhere in a table after the system and control units have a 'chat' about defined devices / control units. Other things considered: how the device is shared, what paths and what control units are connected to what LPAR / SysPlex, how the caching is defined/working. What I know, is when you IPL, the operating system use the IODEVICE macros for example and scan the IO config or using your setup in HCD. Only devices which are initialized and varied online are available for use. The system is 'talking' with each control unit and then establish tables for each devices and control units. Of course your CE should get those devices ready for use. But see Bill Woodger's excellent comments about system control blocks. So if a device is 'boxed' or in a similar status, the operating system, the hardware on the computer and control unit are not 100% agreeing with the real status of a device. Hence those DS commands as an aid amongst other things for you. One example I know is, if you vary a device offline on one LPAR, but the device is in use in the same LPAR or other LPAR in same or other SysPlex. Then you get some inconsistency. This is messy enough that I locked up the VARY command in RACF. Above is based on my frail and faint memory as storage admin. Perhaps others can chime in with better examples or pointers to good documentation. Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
