Re: One sysplex across two z/800???
On a z800 (machine 2066), is this still possible to do? I thought all machine conversions had been withdrawn from marketing on 12/31/2005 (letter 905-220) Brian On Sat, 8 Jul 2006 20:03:54 +0900, Timothy Sipples [EMAIL PROTECTED] wrote: Better yet, you could configure the z800 at or near its lowest capacity setting and place it into the Sysplex with Capacity Backup (CBU). In the unlikely event the System z9 BC failed (in a disaster, for example), you could fire up the CBU capacity on the z800 to handle your essential workload. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
-Original Message- From: IBM Mainframe Discussion List On Behalf Of Gibney, Dave I believe the answer is no, you can't use ICF (Internal Coupling Facility) to connect any two CECs. Works fine between our two Amdahl (G5) machines. We're installing a pair of z9s; does this mean we won't be able to do Parallel Sysplex any more? -jc- -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
I believe the answer is no, you can't use ICF (Internal Coupling Facility) to connect any two CECs. Works fine between our two Amdahl (G5) machines. We're installing a pair of z9s; does this mean we won't be able to do Parallel Sysplex any more? No, it does not! z/OS (and its predecessors) never cared where the CF is, and never will. As long as you can connect to it, external or interenal, you can use it. I've done it for years! When in doubt. PANIC!! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
Chase, John [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] m... -Original Message- From: IBM Mainframe Discussion List On Behalf Of Gibney, Dave I believe the answer is no, you can't use ICF (Internal Coupling Facility) to connect any two CECs. Works fine between our two Amdahl (G5) machines. We're installing a pair of z9s; does this mean we won't be able to do Parallel Sysplex any more? -jc- Yes, you can. The first implementation of internal CF's, called ICMF, had the restriction that the CF's could only be accessed by LPARs in the same footprint. Now the ICF's are full CFs like dedicated CF's (if they are still availble). Kees. ** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. ** -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
I haven't seen anyone mention that the OP would need a sysplex timer (which he doesn't need now). That cost alone my be good enough reason to upgrade the box to newer technology. Regards, Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group mailto: [EMAIL PROTECTED] z/OS and OS390 expert at http://searchDataCenter.com/ateExperts/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
A Coupling Facility which is an ICF is just as functional as an external CF. The biggest consideration for an ICF is failure isolation. You need to understand which structures are used by which data sharing members. You may need an external CF or to use system managed structure duplexing to insure you don't lose the only copy of a structure and the data sharing members using it at the same time. The benefit of an ICF is that it gets upgraded free. We had an ICF configured on a previous 2064 and 2084 both upgraded to 2094 got a lot faster without having to buy that ICF again. Best Regards, Sam Knutson, GEICO Performance and Availability Management mailto:[EMAIL PROTECTED] (office) 301.986.3574 Think big, act bold, start simple, grow fast... -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Chase, John Sent: Monday, July 10, 2006 8:21 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: One sysplex across two z/800??? -Original Message- From: IBM Mainframe Discussion List On Behalf Of Gibney, Dave I believe the answer is no, you can't use ICF (Internal Coupling Facility) to connect any two CECs. Works fine between our two Amdahl (G5) machines. We're installing a pair of z9s; does this mean we won't be able to do Parallel Sysplex any more? -jc- This email/fax message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this email/fax is prohibited. If you are not the intended recipient, please destroy all paper and electronic copies of the original message. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
Mark Zelden writes: I haven't seen anyone mention that the OP would need a sysplex timer (which he doesn't need now). That cost alone my be good enough reason to upgrade the box to newer technology. I was thinking that, too (and mentioned that in e-mail to the original poster). It does seem like a lot to ask to get a Sysplex Timer (or even two) at this point in time, with STP an option on the newer systems. It's hard to say exactly what the best option would be without knowing all the circumstances, but my hunch is that getting a larger system (probably a System z9 BC unless substantial growth is expected) and then relegating the z800 to cold or warm standby, ideally in another building, would be a nice mix of low cost combined with forward progress in improving business availability. It really depends on the service levels the original poster is trying to achieve, though. Sometimes the business always needed Parallel Sysplex and it's past time. Sometimes the growth means the business has reached a point where it's more important than before. It depends. - - - - - Timothy F. Sipples Consulting Enterprise Software Architect, z9/zSeries Tokyo (Serving IBM Japan and IBM Asia-Pacific) E-Mail: [EMAIL PROTECTED] -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
I believe the answer is no, you can't use ICF (Internal Coupling Facility) to connect any two CECs. Yes, you can. I have done it, in the past. There is no intrinsic difference between an ICF and an external CF, as far as z/OS is concerned. When in doubt. PANIC!! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
We have a parallel sysplex environment running on a z/800. We've used all 15 LPARs supported by the Hardware, CPU and memory are max'ed out and we need more physical resources. If we buy another (used) z/800 (we are also considering an upgrade to a z9 but budget is an issue), can we have the same sysplex spread across both z/800's sharing the CPUs and memory and use the LPARs on the new z/800 to add more systems to the same existing sysplex? If so, what needs to happen? Can anyone point me to any literature that I could use as a guide? Currently we have ICF setup in 2 LPARs and two processors shared by all 15 LPARs. Yes, you can. In fact, you can add 31 more systems if you wish. :-) It's really not much different from what you're doing now, but of course you'd have two frames. Start here for details: http://www.ibm.com/servers/eserver/zseries/pso/ However, with respect to the System z9 BC and your budget, I would strongly recommend taking a very careful look at that. In particular, you should factor in your ongoing software costs which will be lower for the same LSPR capacity as your z800. I would recommend including speciality engines (zAAP, zIIP, and IFL) in your calculations. These processors can offload Java, certain DB2 work, and Linux, respectively, from the main processors and offer a lower cost profile. Encryption is much faster, too. The z9 BC capacity settings are more precise -- the system size can be exactly what you need at a moment in time, not too much. And I would look at the ongoing maintenance costs. The z9 BC supports up to 30 LPARs, depending on the model, so you should be fine there. (You have a decent number of LPARs, though. Have you considered z/VM for some of your work?) If you want to take a step forward and have a true Parallel Sysplex so that you have extra redundancy (and higher potential availability and reliability for your users) compared to what you have now, then you could keep the z800 as your secondary system. There are a variety of options there, but you might want to shift everything over to the new system and keep the z800 on cold or warm standby. That'd probably be the most economical two-system approach. Better yet, you could configure the z800 at or near its lowest capacity setting and place it into the Sysplex with Capacity Backup (CBU). In the unlikely event the System z9 BC failed (in a disaster, for example), you could fire up the CBU capacity on the z800 to handle your essential workload. And that could substantially reduce your DR budget since you can bring some of it in-house. You may also wish to consider whether the z800 and z9 BC would be located in different buildings for extra protection, along with storage. The bottom line, though, is that it's not a good idea to look at the hardware costs alone -- for mainframes or for any other computing system. The hardware is cheap compared to all the other costs. I know it's hard to break that thinking since a lot of people remember when hardware really was expensive. Hope that helps. - - - - - Timothy F. Sipples Consulting Enterprise Software Architect, z9/zSeries IBM Japan, Ltd. E-Mail: [EMAIL PROTECTED] -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
I have fowarded this to the real IBM-Mail list. You may want to subscribe and post to the list server. You will get many more reponses. For instructions and to register for the list: http://bama.ua.edu/cgi-bin/wa?SUBED1=ibm-mainA=1 [EMAIL PROTECTED] wrote: Hi, We have a parallel sysplex environment running on a z/800. We've used all 15 LPARs supported by the Hardware, CPU and memory are max'ed out and we need more physical resources. If we buy another (used) z/800 (we are also considering an upgrade to a z9 but budget is an issue), can we have the same sysplex spread across both z/800's sharing the CPUs and memory and use the LPARs on the new z/800 to add more systems to the same existing sysplex? If so, what needs to happen? Can anyone point me to any literature that I could use as a guide? Currently we have ICF setup in 2 LPARs and two processors shared by all 15 LPARs. Thanks very much in advance, Tullio. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: One sysplex across two z/800???
I believe the answer is no, you can't use ICF (Internal Coupling Facility) to connect any two CECs. Why so many LPARs? z/VM and Z/OS Guests. -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of John S. Giltner, Jr. Sent: Friday, July 07, 2006 7:29 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: One sysplex across two z/800??? I have fowarded this to the real IBM-Mail list. You may want to subscribe and post to the list server. You will get many more reponses. For instructions and to register for the list: http://bama.ua.edu/cgi-bin/wa?SUBED1=ibm-mainA=1 [EMAIL PROTECTED] wrote: Hi, We have a parallel sysplex environment running on a z/800. We've used all 15 LPARs supported by the Hardware, CPU and memory are max'ed out and we need more physical resources. If we buy another (used) z/800 (we are also considering an upgrade to a z9 but budget is an issue), can we have the same sysplex spread across both z/800's sharing the CPUs and memory and use the LPARs on the new z/800 to add more systems to the same existing sysplex? If so, what needs to happen? Can anyone point me to any literature that I could use as a guide? Currently we have ICF setup in 2 LPARs and two processors shared by all 15 LPARs. Thanks very much in advance, Tullio. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
