The only thing I can say about all of this is that one
can never have enough SPOOL space. Even with SFPURGER
community. Therefore, I believe a full volume for
spool space is not unreasonable. The other volume
TEMP space but every shop is different).
With the distinct possibility of having the Wrath of
Chuckie turn my way, I
The following works for
me and is only recommended if you are comfortable
with z/VM and know it's
knobs and buttons.
I AGREE that doing full-volume page/spool is a wise
decision for 95%+ z/VM
installations. Most folks aren't twisted enough to
do code-merging like I
do. So if this brand-spanking new z/VM system will
be built into a
running, usable environment you certainly DO want
full-volume spool and
paging. I also agree that this is still an OS that
will need paging space
- probably will for a long time until memory is free
and everyone has 9PB
on their z9**999.
We are a bit DASD constrained to the point where I
would rather not beg for
more DASD for installing, especially since we
install the GA code, do the
RSU update to it and then -merge- the code into our
existing
test/production systems. Once that is done, I
don't need the extra
volume(s) for anything but a handy backup of the
original data.
For installing z/VM 5.2, we have a full Mod3 for the
RES, and one for W01.
MDISK 1002 3390 xxxxx 00125 VMB028 MR *W02
MDISK 1003 3390 xxxxx 00225 VMB028 MR *SPOOL
MDISK 1004 3390 xxxxx 00350 VMB028 MR *PAGE
And this works GREAT. Page could probably live with
a lower number since
we don't really do any other work than MAINT stuff
but 50 cyls for page is
probably pushing it too low. Note that the W02
volume is a little ?! less
than a full Mod 3. Everything that would be on that
volume fits nicely in
the 125 cyls.
In your case with a MOD 9 for RES you don't need to
worry about any Wxx
volumes though. You could get fancy and do a
one-pack install, but that's
another story.
Bottom line is, z/VM 5 makes it easier to 'massage'
the DDR installation on
a second level guest so that you can define disks
based on what you need.
KNOWING what you need is key though. Your mileage
may vary offline...
_______________________________________
James Vincent
Systems Engineering Consultant
Nationwide Services Co., Technology Infrastructure
Engineering
Mainframe, z/VM and z/Linux Support
One Nationwide Plaza 3-25-02
Columbus OH 43215-2220 U.S.A
Voice: (614) 249-5547 Fax: (614) 677-7681
VM/ESA and z/VM Discussions
On Friday, 01/20/2006 at 11:02 EST, "James G.
Stracka"
Post by James G. StrackaFor the z/VM 5.2.0 installation I shall be doing
it 2nd level. I want
Post by James G. Strackato use a 3390-9 for the Res volume and would
like to use a 50 cylinder
Post by James G. Strackavolume for the PAGE pack and a 1000 cylinder
volume for the SPOOL pack.
Post by James G. StrackaWill a 50 cylinder and 1000 cylinder volumes do
for the installation
Post by James G. Strackaor must those two be full 3390-3 for the
installation then moved later?
You must supply the volumes indicated for
installation. You can move
them
later.
Post by James G. StrackaSince 5.1.0 and I assume 5.2.0 does not need to
page, it would be nice
Post by James G. Strackaif the paging volume could be optionally skipped
at installation.
Not need to page? Eh? Who says? VM needs to
page the instant virtual
machine memory plus memory used by CP exceeds the
size of the LPAR.
The point of making each a 3390-3 was to answer
the numerous complaints
about the spooling/paging volumes being too small
to really start using
VM.
Alan Altmark
z/VM Development
IBM Endicott