Philip, What's your paging rate with this configuration? 18 paging volumes seems low for this amount of storage.
Dennis "Christmas dawned clear and cold; lovely weather for killing Germans, although the thought seemed somewhat at variance with the spirit of the day." -- War as I knew it, by Gen. George S. Patton, Jr. -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Philip Tully Sent: Friday, December 17, 2010 05:33 To: IBMVM@LISTSERV.UARK.EDU Subject: Re: [IBMVM] Expanded storage question We have a different situation from you Martha in that we can't add more central storage. Our current experience is that with a heavily over-committed lpar large amounts of expanded storage allows for reasonab le performance with high paging rates. I include output from the vir2real exec to see the config we are running, this is dev/test NOT PROD, and we are increasing xstore to 32Gb this week end. Storage information for VM system VLB2 Any userid using NSSes "CMS GCS" are considered CMS users. Total Virtual storage (only ids not running CMS): 732340 MB ( 715.2 GB) Total Virtual storage (only ids running CMS): 1200 MB ( 1.2 GB) Total Virtual storage (all logged on userids): 733540 MB ( 716.3 GB) Usable real storage (pageable) for this system: 259884 MB ( 253.8 GB) Total LPAR Real storage: 262144 MB ( 256.0 GB) Expanded storage usable for paging: 24544 MB ( 24.0 GB) Total Virtual disk (VDISK) space defined: 17285 MB ( 16.9 GB) Average Virtual disk size: 98 MB Virtual to (usable) Real storage ratio: 2.8 : 1 Virtual + VDISK to Real storage ratio: 2.9 : 1 Virtual to Real ratio (non CMS work only): 2.8 : 1 Paging: 18 volumes defined, total space is: 413696 MB ( 404.0 GB) Total Paging space in use (60% utilization): 248864 MB ( 243.0 GB) Ready; ---------------------------------------------------------------------- This message w/attachments (message) is intended solely for the use of the intended recipient(s) and may contain information that is privileged, confidential or proprietary. If you are not an intended recipient, please notify the sender, and then please delete and destroy all copies and attachments, and be advised that any review or dissemination of, or the taking of any action in reliance on, the information contained in or attached to this message is prohibited. Unless specifically indicated, this message is not an offer to sell or a solicitation of any investment products or other financial product or service, an official confirmation of any transaction, or an official statement of Sender. Subject to applicable law, Sender may intercept, monitor, review and retain e-communications (EC) traveling through its networks/systems and may produce any such EC to regulators, law enforcement, in litigation and as required by law. The laws of the country of each sender/recipient may impact the handling of EC, and EC may be archived, supervised and produced in countries other than the country in which you are located. This message cannot be guaranteed to be secure or free of errors or viruses. References to "Sender" are references to any subsidiary of Bank of America Corporation. Securities and Insurance Products: * Are Not FDIC Insured * Are Not Bank Guaranteed * May Lose Value * Are Not a Bank Deposit * Are Not a Condition to Any Banking Service or Activity * Are Not Insured by Any Federal Government Agency. Attachments that are part of this EC may have additional important disclosures and disclaimers, which you should read. This message is subject to terms available at the following link: http://www.bankofamerica.com/emaildisclaimer. By messaging with Sender you consent to the foregoing.