W dniu 17.11.2020 o 05:15, Peter pisze:
Hello,
I am just trying to understand on how new pool of volume is created in DS8K
box , then what values are shared from DS8K with zOS system programmer to
the newly created LCU in IODF ?
Does the newly added DASD UCB needs a POR or just soft activation of IODF
holds good or we need a IPL ?
Any advise are much appreciated
There are two parts of the excercise:
1. DS8K configuration.
2. System part.
CAUTION: NEITHER IPL NOR POR IS REQUIRED. THIS IS MAINFRAME!
First part belongs to hardware engineer. It can be IBM CE or your
colleague. Note: some DASD boxes cannot be configured by user depending
of vendor approach.
In this part CE configure CUs, number of base devices and aliases.
Output: CUADD (Logical CU number), UA scope for 3390B and UA scope for
aliases (usually the remain of 256)
To simplify I assume there are no tricks with CU to channel assignments.
Second part is system administrator work.
You get list of CUs with the number of 3390B's and 3390A's.
You define it in IODF using HCD.
Then ACTIVATE.
Voila - you have new devices in your system. With no outage.
Then VARY dev ONLINE
Then ICKDSF
Then VVDS
Then DFSMS storage groups.
HTH
BTW: I cannot remain *any* IPL of POR when added new DASD box to the
system. Even I/O cards can be added dynamically.
Of course this is my limited 20 years experience in few shops.
Tapes are completely different... that means no IPL as well ;-)
--
Radoslaw Skorupka
Lodz, Poland
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