It looks like unit 6005 should belong to subsystem X'6000'. You (or your CE),
should check the subsystem definitions.
You can use the DEVSERV command to interrogate your online DASD.
John
Hi.
II have this messagges in the system log:
IEE103I UNIT 6005 NOT BROUGHT ONLINE 677
TIOT
A lot of SMS sites provide for multi-volume allocation in the default
DATACLAS, but 40 would be unusually high Unit Count to provide all
datasets.
Why?
I've worked in shops that set the default, through ACS, to the max (59).
I would also be careful with just setting the max (been
I think that I'm reading too much. After I suspend (CSUSPEND) a pair, what
the best/only way to get the pair resynch?
From what I can read, a CESTPAIR MODE(RESYNC) will copy the changed
cylinder from the PRIMARY to the PSECONDRY while a CRECOVER will recopy
the PRIMARY to the PSECONDRY ?
CESTPAIR
You are moving to a new box, so you need to look at your current peak I/O load,
for each LPAR and calculate (on an LCU basis) how loaded your new LCUs will be.
The method shown below is a good starting point, but pick your factor to cope
with bursts of I/O activity. Since HyperPAVs are assigned
Bob's estimate sounds about right. The control LPARs don't burn many CPU
cycles. There will be a peak (or multiple peaks - depending) during the day
when the status of the DASD is checked. Depending on how many devices you have,
it is probably a good idea to plan this task for a quiet time. I
-- snip --
Are you now saying that you want to use the same set of target volumes for
Z\os AND Z\VM source volumes?
Yes, and z/VM guest volumes as well.
I could potentially bring up a z/OS guest under z/VM and want to share the
DASD with other z/OS systems. Although that is not our current
While searching for CCW command codes (x'08' actually) I ran across this
page of a computer science professor at Northern Illinois University. It
seems they are learning some serious mainframe.
More to the point, anyone with a spark of interest in Robert Rannie's NIU
curriculum has a
-- snip --
If anyone has Migrated from XRC to Global Mirror, I was wondering if they
could recommend any Docs. (best practices, guidelines...) and or
share their experiences? Thanks in advance!
-- snip --
Mike,
the two methods are considerably different so it is important to review
various
-- snip --
Not having any problems with base and aliases definitions in CSS0
but I'm trying to put the aliases in CSS1 (z9 BC). Haven't used CSS1
before. When I defined CSS1 in HCD, it seems to want unique LPARs and
ChpIds in CSS1, which is not ideal. I did an experiment with a
There is a very informative redbook on connectivity - IBM System z
Connectivity Handbook
You'll find a good description of how zHPF works (and other interesting
stuff).
http://www.redbooks.ibm.com/redpieces/abstracts/sg245444.html?Open
I found this on IBM.COM
You should also ensure that you protect CC with RACF so that you can control
its use (which should be 0 with Hyperswap).
FACILITY class and STGADMIN.ADR.COPY.CNCURRNT or STGADMIN.ADR.DUMP.CNCURRNT
profiles.
Also check your HSM settings.
John
- Original Message -
From: Paolo
I agree with Ted and Allan, that you really need to look at other values as
well (throughput, queuing, parallel tape mounts, ..), And then you have the
VTS staging/destaging, potential thrashing, ..
What about future growth in your workload, the end of month runs. There are
very many issues to
Well, how much money do you have available? :-)
There are some very nice products that monitor mainframe DASD. They can do a
LOT more than that. Long term trending, automate adding volumes to storage
groups when they are full, and much more.
If you want to roll your own, DCOLLECT (as Kees
The MDL can also replicate the data. One solution I am known of starts the
replication at tape close. There are other options.
For example. If the MAS/MDL uses a DS6800 to store the Tape volumes, then
the DS6800 can PPRC (in real-time of course) to a second DS6800. This is
valid for any kind of
You can also use the SETIOS command.
Once the LCUs have been converted, the other LPARs can't move the aliases
around. The IBM documentation states that they are ignored.
RMF will show you the LCU and HyperPAV activity. The MVS DEVSERV command : D
M=DEV will give you information about
You have to activate HyperPAV usage via the IECIOSxx Parmlib member
(HyperPAV=Yes). The LSSes used by this LPAR will be converted to HyperPAV
LSS.
Sysplex 1 will have HyperPAV=No, and will continue to operate as before. Any
LSS that has been converted to HyperPAV usage (by Sysplex 2) will be no
Yes.
The I/O that needs an Alias will get one with HyperPAV. With Dynamic it may
have to wait (depending on I/O concurrency to that UCB and current number of
PAVs assigned).
Additional benifts.
A reduction in the number of Alias addresses that you need to define per LCU
(Allows for more
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