David Andrews wrote:
On Fri, 2011-10-07 at 10:11 -0400, John Eells wrote:
See Topic 3.1, What is the Customized Offerings Driver?, at:
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/e0z2b1c0/3.1?SHELF=EZ2ZO213&DT=20110615113655
John, is the COD usable as a "rescue" system? (Yeah, I see that it
takes two hours simply to restore from DVD. But it might give me a warm
feeling just to have a current DVD in a vault somewhere.)
First: We support the COD's use only for installing z/OS. If you are
doing anything else with it and it doesn't work you're on your own.
For any number of configuration and security reasons I think it's
safer--and not very much overhead after you have done it the first
time--to create a rescue system of your own. I believe someone on the
list (Mark Zelden?) has a sample you can use to create a one-volume
rescue system. Additionally, if you include all the parts of z/OS
you're supposed to install when you build a rescue system, we'd support
it through normal service processes were there a problem.
Having said that, if the COD's I/O configuration matches the IOCDS
you're using, things like TSO/E and ISPF, and DFSMSdss (assuming you are
licensed for it) *should* work in the hardware environments that were
supported when that copy of the COD was created since they are required
to install z/OS using one installation method or another.
Oh, and that estimate is 2 hours *per DVD.* It's actually a pessimistic
estimate for most people because the data rates supported on newer HMCs
are significantly better than those for the oldest possible HMCs we used
to calculate it, but we didn't want tell people to expect 30 minutes per
DVD and then have it take 2 hours for each one.
--
John Eells
z/OS Technical Marketing
IBM Poughkeepsie
ee...@us.ibm.com
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