Re: How much real is required for 64-bit

snip Not to mention with a wait stated system, since you cannot 'attach a zillion page packs'. You are limited to 253x4GB page space, about one TB. snip Having so many page space makes one want to use dynamic PAV volumes, it means 253x2 device devices addresses, and it means maximum 128 base

Re: How much real is required for 64-bit

Thanks for everyone for your suggestion. Niran Kamaksorn Bangkok, Thailand -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the

Re: How much real is required for 64-bit

Unfortunately, with a max of 128 gig of real, that would leave you with the requirement to attach a zillion page packs to the system. Performance would probably not be too good. Not to mention with a wait stated system, since you cannot 'attach a zillion page packs'. You are limited to 253x4GB

How much real is required for 64-bit

I have a few lpars with 192MB of real defined. Would that be enough for 64-bit testing ? The discussiong seemed to get off track about real storage. You can start testing 64 bit virtual with any amount of real storage. It is virtual storage and only what you use, requires backing in real or aux.

Re: How much real is required for 64-bit

On Thu, 10 Nov 2005 09:54:26 -0500, Clark, Kevin D, HRC-Alexandria/EDS [EMAIL PROTECTED] wrote: Question: I have a few lpars with 192MB of real defined. Would that be enough for 64-bit testing ? The absolute minimums are documented in the Planning for Installation manual (see cut/paste from

Re: How much real is required for 64-bit

In our case, we saw no problem whatsoever in moving from 32-bit OS/390 2.10 to 64-bit z/OS 1.4. We did, however, hit a couple of glitches (in ISV software -- Model 204 and CA-Dispatch) when we finally increased the amount of physical memory allocated to our production LPAR to more than

Re: How much real is required for 64-bit

At several SHAREs I gave a pitch on this conversion. The last time was in Boston to a nearly empty room: I'm done with it. Check the proceedings for Session 2839 SHARE 105. . . . JO.Skip Robinson Southern California Edison Company SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595

How much real is required for 64-bit

Question: I have a few lpars with 192MB of real defined. Would that be enough for 64-bit testing ? Kevin -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET

Re: How much real is required for 64-bit

By all means *start* your 64-bit testing on the most disposable LPAR you have regardless of size. However, certain 64-bit problems *will not* show up in an LPAR that has less than 2 gig of memory. Before going to production in a 2 gig LPAR, you must somehow build a large test LPAR if only

Re: How much real is required for 64-bit

-Original Message- From: IBM Mainframe Discussion List On Behalf Of Skip Robinson By all means *start* your 64-bit testing on the most disposable LPAR you have regardless of size. However, certain 64-bit problems *will not* show up in an LPAR that has less than 2 gig of memory.

Re: How much real is required for 64-bit

In a recent note, Chase, John said: Date: Thu, 10 Nov 2005 12:11:03 -0600 -Original Message- From: IBM Mainframe Discussion List On Behalf Of Skip Robinson By all means *start* your 64-bit testing on the most disposable LPAR you have regardless of size. However,

Re: How much real is required for 64-bit

-Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Paul Gilmartin Sent: Thursday, November 10, 2005 12:24 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: How much real is required for 64-bit snip I'd guess the twilight zone is virtual; I'd

Re: How much real is required for 64-bit

Before going to production in a 2 gig LPAR, you must somehow build a large test LPAR if only temporarily. Otherwise you may be in for some nasty surprises. Maybe, but the RSM issues have been fixed for years now. I would expect that simply applying the necessary maintenance would be

Re: How much real is required for 64-bit

Skip Robinson wrote: By all means *start* your 64-bit testing on the most disposable LPAR you have regardless of size. However, certain 64-bit problems *will not* show up in an LPAR that has less than 2 gig of memory. Before going to production in a 2 gig LPAR, you must somehow build a large

Re: How much real is required for 64-bit

I have a few lpars with 192MB of real defined. Would that be enough for 64-bit testing ? ... I wouldn't attempt it without at least some memory above 2GB. Otherwise, how would you know anything was working? -teD Me? A skeptic? I trust you have proof!

Re: How much real is required for 64-bit

Maybe, but the RSM issues have been fixed for years now. I would expect that simply applying the necessary maintenance would be sufficient to avoid most of the problems. Much the same would apply with ISV software by now. ... Boy! Aren't you the optimist! I have been burned (recently) by 'FIXED'

Re: How much real is required for 64-bit

Clark, back when we did 64bit conversion we started out on an lpar that was real small (way below 2GB). We ran into a few problems because the lpar was so small that no one else had seen before us. (But that was OS/390 2.10.) Best regards, Barbara Nitz -- 10 GB Mailbox, 100 FreeSMS/Monat

Re: How much real is required for 64-bit

of it ? Niran Kamaksorn Bangkok, Thailand -IBM Mainframe Discussion List IBM-MAIN@BAMA.UA.EDU wrote: - To: IBM-MAIN@BAMA.UA.EDU From: Barbara Nitz Sent by: IBM Mainframe Discussion List Date: 11/11/2005 13:12 Subject: Re: How much real is required for 64-bit Clark, back when we did 64bit