Answers below
W dniu 08.09.2025 o 11:27, Peter pisze:
Hello
We are migrating our current storage from DS8886 to DS8910F.
While both the storage are connected to mainframe can I point one of the
lpar to the new box DS8910F and ipl it ?
Yes, that's easy. Simply provide new device addresses in the LOAD panel.
We have two zOS LPARS in mainframe and I want to try IPL one of the LPARs
pointing to DS8910F.
Out of the 6 channels . The 4 channels are connected to DS8886 and 2
channels are connected to DS8910F.
Is it possible to make the 4 channels offline prior loading the loading the
LPAR and have them point to 2 channels which are connected to DS8910F ?
Yes, it is possible, however it most cases not needed at all.
Method: Activate the LPAR, but do *not* start (IPL) the system. Then use
SE/HMC features to make the channels offline to that LPAR. Then IPL
(Load) the system.
It is not needed, because you have unique device number in the IODF. And
the numbers (aka addresses) are used to point SYSRES volume and IODF
volume.
Depending on some factors you could have duplicate volsers. In that case
during IPL you will get (a lot of) WTORs asking which address to choose
offline. However properly prepared OS Config will prevent it by making
some devices as offline. Or not defined.
--
Radoslaw Skorupka
Lodz, Poland
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