It depends on the number of DDM's and the size of the DDM's and if you make
1 or two array sites how your IOCDS will look like. Cuadd= has a relation
with the lcuid

2010/7/27 Schwarz, Barry A <barry.a.schw...@boeing.com>

> We are installing a new z10 with a minimal DS6800 in a very small data
> center (to replace our venerable MP2003).  Using the SMC, we have configured
> the DS6800 with RAID 5 to give us 250GB of usable storage set up as eleven
> 3390-3s and the rest as 3390-9s.  (We wanted to use RAID 10 but the system
> insisted on keeping two of the DDMs in reserve so we ended up with only
> 125GB which is not sufficient.)
>
> I am using the Stand Alone IOCP on the z10 HMC to build the IOCDS.  I have
> looked at every DS6800, HMC, IOCP, and HCD manual I could find but I cannot
> find any description of how the ADDRESS operand on the IODEVICE statement
> relates to the logical volumes on the DS6800.  I have the same problem
> relating the CUNUMBER and CUADD operands on the CTLUNIT statement to the
> physical and logical control units on the DS6800.
>
> The Customs Offering Driver manual (GI11-2843-04) shows 3390 devices at
> addresses D40-D5F.  Obviously I'm missing something but I see no method of
> assigning those addresses on the DS6800.  A pointer to the relevant section
> of a manual would be greatly appreciated.  Suggestions on how to use RAID 10
> would also be welcome.
>
> Thank you
>
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-- 
Met vriendelijke groeten/With kind regards

Dick de Groot

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