Re: HMC : Dynamic I/O
Thanks to all for replies. -- 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
HMC : Dynamic I/O
We want to turn on the Allow dynamic changes to the channel subsystem input/output (I/O) definition switch on the HMC. But this will require storage, and I can not find reference as to how much. We currently have all available storage tied up among our LPARs. So I must steal some storage from an LPAR, and I'd like to keep it to the minimum. Any info will be greatly appreciated. Ed Micucci -- 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: HMC : Dynamic I/O
I believe the I/O configuration display command mentioned should be D IOS,CONFIG(HSA). Regards, Kevin -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ted MacNEIL Sent: Tuesday, May 09, 2006 5:00 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: HMC : Dynamic I/O It depends on the processor type you have and whether you have FICON, or not. The z/990 tends towards a GIG for HSA, and you need at least a 50% cushion. But, I would plan for twice as much as you are currently using. You can display the memory usage through the HMC (I forget how). Or, you can figure it out by how much you have installed vs how much you have allocated to LPARs. D IOS,HSA Only displays the number of devices defined, NOT memory (at least the last time I looked). - -teD O-KAY! BLUE! JAYS! Let's PLAY! BALL! -- 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
Re: HMC : Dynamic I/O
Ted, We have NO storage available for this. I will have to steal some from a test LPAR. So I'm looking for the minimal amount needed. We're running a z890. Ed -- 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: HMC : Dynamic I/O
IBM Resource Link has an HSA Estimator look under Tools for z9. z990 had it on the HMC. I don't recall if it's on the z890 HMC. Best Regards, Sam Knutson, GEICO Performance and Availability Management mailto:[EMAIL PROTECTED] (office) 301.986.3574 In politics an absurdity is not a handicap. Napoleon Bonaparte -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ed Micucci Sent: Wednesday, May 10, 2006 2:06 PM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: HMC : Dynamic I/O Ted, We have NO storage available for this. I will have to steal some from a test LPAR. So I'm looking for the minimal amount needed. We're running a z890. Ed 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: HMC : Dynamic I/O
So I'm looking for the minimal amount needed. We're running a z890. Look at the SAPR Guide for z/890. I have only looked at the ones for the z/900 z/990. They both have an HSA planning table. I assume the z/890 has one, as well. IIRC, SAPR - System Assurance Planning Reference. - -teD O-KAY! BLUE! JAYS! Let's PLAY! BALL! -- 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: HMC : Dynamic I/O
Easy enough. Just flip the switch, turn off 'load on activate', and POR. Then activate your LPARS one at a time in priority order. When you run out of main, then that activation will fail. Reduce the allocation for that LPAR to fit. The risk is that you will run out of main before you run out of LPAR's and you will have to deactivate and reduce several LPARs. If you do not 'load on activate', then you can back out before you IPL. Dynamic changes are oh so handy but oh so expensive. Well worth it IMHO but YMMV. HTH and good luck. -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ed Micucci Sent: Wednesday, May 10, 2006 7:47 AM To: IBM-MAIN@BAMA.UA.EDU Subject: HMC : Dynamic I/O We want to turn on the Allow dynamic changes to the channel subsystem input/output (I/O) definition switch on the HMC. But this will require storage, and I can not find reference as to how much. We currently have all available storage tied up among our LPARs. So I must steal some storage from an LPAR, and I'd like to keep it to the minimum. Any info will be greatly appreciated. Ed Micucci -- 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: HMC : Dynamic I/O
It really depends on how big the IOCDS is, how much is being reserved for dynamic expansion, etc. The Processor Resource/Systems Manager Planning Guide and Support Element Operations Guide have good information on this. As mentioned previously the support element has an HSA Estimation Tool. As an absolute guess, baring FICON, as a place to start I would figure about 512MB. Regards, Kevin -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ed Micucci Sent: Wednesday, May 10, 2006 11:06 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: HMC : Dynamic I/O Ted, We have NO storage available for this. I will have to steal some from a test LPAR. So I'm looking for the minimal amount needed. We're running a z890. Ed -- 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
