With the distinct possibility of having the Wrath of Chuckie turn my way, I disagree with a bit of this. First a disclaimer: 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. The rest are as follows: 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 mailto:[EMAIL PROTECTED] VM/ESA and z/VM Discussions <[email protected]> wrote on 01/20/2006 12:31:07 PM: > [email protected] > > On Friday, 01/20/2006 at 11:02 EST, "James G. Stracka" > <[EMAIL PROTECTED]> wrote: > > For the z/VM 5.2.0 installation I shall be doing it 2nd level. I want > > to use a 3390-9 for the Res volume and would like to use a 50 cylinder > > volume for the PAGE pack and a 1000 cylinder volume for the SPOOL pack. > > > > Will a 50 cylinder and 1000 cylinder volumes do for the installation > > or 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. > > > Since 5.1.0 and I assume 5.2.0 does not need to page, it would be nice > > if 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
