If you want to allow any LPAR to "grab" all of the unused memory, then you can set the reserve memory to the available unused memory in all LPARs. What is actually available will show up as STANDBY storage in z/VM and the rest as RESERVED. Note that the amount of STANDBY displayed may be the same on all LPARs, because the same unused storage "pool" is available to all the LPARs.
On Fri, Aug 5, 2011 at 9:39 AM, Martin, Terry R. (CMS/CTR) (CTR) <terry.mar...@cms.hhs.gov> wrote: > Alan, > > When you add up all of the RESERVE memory for all LPARS does it need to add > up to or below the amount of available unused memory or can each LPAR be > defined the max amount of memory that is available and unused? > > Thank You, > > Terry Martin > Lockheed Martin > CMS - CITIC > 3300 Lord Baltimore Drive, Suite 200, 21244 > Engineering Computing > Mainframe Support > Cell - 443 632-4191 > > > > -----Original Message----- > From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On > Behalf Of Alan Altmark > Sent: Thursday, August 04, 2011 10:20 AM > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: Q STOR command results > > On Thursday, 08/04/2011 at 10:06 EDT, Richard Baek <rb...@bbandt.com> > wrote: >> We're trying to add additional storage to some of our zVM LPARs without >> IPLing the system. > : >> Anyone have any idea what we might be doing >> wrong ? > > You need to change the LPAR image profile to have some amount of storage > defined as "reserved". If you don't do that, the LPAR can't see the > unused memory on the box. So make that change, then repeat the > deactivation/reactivation sequence. Note that you can set the "Reserved" > value to a maximum value, even if all that memory isn't on the box. Then > you can specify how much of that "reserved" memory CP will bring online. > > Alan Altmark > > Senior Managing z/VM and Linux Consultant > IBM System Lab Services and Training > ibm.com/systems/services/labservices > office: 607.429.3323 > mobile; 607.321.7556 > alan_altm...@us.ibm.com > IBM Endicott > -- Bruce Hayden z/VM and Linux on System z ATS IBM, Endicott, NY
