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©2010 SoftwareOnZ AutoSoftCapping (ASC) vWLC Manage your software Bill without the Performance Problems !
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©2010 SoftwareOnZ AGENDA SoftCapping Strategies AutoSoftCapping(ASC) General Principles How it works OOCoD Putting ASC into Action
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General Terminology Technical terms and abbreviations used in today’s presentation. – MSU: (Million Service Units) : reference unit for Software billing – IMSU (or ACTMSU): instantaneous MSU consumption – R4H: Rolling 4 Hours – CPC Capacity: z/Server full capacity – Soft-Capping / WLM WLM, PR/SM and enforcement the Soft-Capping limit – DC: Defined Capacity – Hardware Management Console (HMC) – Crunchable
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©2010 SoftwareOnZ VWLC with Soft-Capping: LPAR view IMSU : Instantaneous consumption of MSU for the LPAR R4H : Average of IMSU in 4 consecutive hours. DC : Defined Capacity, billing limit that you don’t want to exceed … and that you can fix at any level you want But performance can be affected (capping IMSU is brought back to the DC) !
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VWLC with IBM Soft-Capping: Pros & Cons VWLC with IBM Soft-Capping: – IBM Soft-Capping is easy to setup on the machine – It allows you to control the bill at a chosen level (by fixing DCs) VWLC with IBM Soft-Capping: + / - IBM Soft-Capping Low DCsAllows billing control Potential performance problems (capping) High DCsNo capping The bill is not controlled anymore
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©2010 SoftwareOnZ AutoSoftCapping - Strategy What is you vWLC strategy? – Set Defined Capacity to 0 and forget it? – Set it to Avoid Capping? Cap the Test, QA environments only? – How do you modify it? What kind of approval is required? – Follow what the experts say? Set it low and adjust as required? Reset at the beginning of the month?
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©2010 SoftwareOnZ zCost – AutoSoftCapping (ASC) AutoSoftCapping: Optimizes the performance of your system while controlling your Workload License Charge. The LPARs’ DCs (Defined Capacity) are dynamically modified in real time by taking into account the behavior and needs of all the LPARs. Keeps the total DC (CPCMAX) constant and guarantees software cost optimization. 52-28-20 55-41-4 72-8-20 93-4-3 Web reporting which allows for control on your activity and your System z/resources. ASC adjusts the DC line, WLM handles z/OS resources
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©2010 SoftwareOnZ ASC – Prerequisites Configuration prerequisites : – Running in vWLC mode – Using IBM Soft-Capping feature. – HMC: Must be accessible for the LPAR that support the ASC Started Task. HMC API must be configured and active (API SNMP) Data Gathering – two ways: RMF: – RMF III started on all LPARs. – RMFDDS (GPMSERVE): at least one active on each SYSPLEX (Multi-system or Monoplex) CMF: – Mainview Explorer (BMC) started on each server (CPC) WLM: – with or without ASC: the SoftCapping activation needs attention on a well-managed WLM policy.
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©2010 SoftwareOnZ General Terminology – CPCMAX: Maximum value allowed by ASC for the sum of the LPAR’s DCs – CPCMIN: Minimum value for the SUM of the LPAR’s DCs – MSUMAX: Maximum Defined Capacity that LPAR is allowed to reach – MSUMIN: Maximum Defined Capacity that LPAR is allowed to reach – White Space = CPC Capacity - SUM (LPAR’s DCs) – CPC Free Space = CPCMAX - SUM (LPAR’s DCs) – LPAR: givers and takers – Crunchable CPC Capacity CPCMAX CPCMIN SUM ( LPAR’s DCs) Minimum White Space White Space CPC CPC Free Space Time
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©2010 SoftwareOnZ General Principle Setting the Defined Capacity line Enforce AutoSoftCapping Defined Capacity parameters CPC: CPCMAX, CPCMIN LPAR: MSUMAX, MSUMIN PERIOD statements If IMSU < R4H Decrease DC to just above the R4H to optimize the SCRT and avoid capping, releasing DC MSUs to the pool. If IMSU > R4H Increase DC to just above the R4H to avoid capping, taking from the pool or enforce capping as you have defined
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©2010 SoftwareOnZ ASC – Product Flow Data Collection RMF or CMF - LPARs (DC, IMSU, R4H, WLM Capping, …) - CPCs (capacity, CPs,..) Data Collection RMF or CMF - LPARs (DC, IMSU, R4H, WLM Capping, …) - CPCs (capacity, CPs,..) LPAR settings (via HMC API) LPAR’s behavior analysis Make decisions to modify DCs LPAR’s behavior analysis Make decisions to modify DCs Web reporting (update HTML files) Writing SMF records ZCASCW ASC Web SERVER ZCASCW ASC Web SERVER ASC Parameters ooCOD LPAxx member Period Definitions Market Open and Close ASC Commands Grab ooCOD increase Rexx script ASC cmd f, ASC Parameters ooCOD LPAxx member Period Definitions Market Open and Close ASC Commands Grab ooCOD increase Rexx script ASC cmd f, Sending alarms (WTO, emails) ZCASC Main ASC Started Task Operator
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©2010 SoftwareOnZ Data Collection Collection Interval RMF or CMF -at the CPC level: serial number, family, type, number of CPs... -at the LPAR level: R4H, DC, IMSU, Weight, number of Logical Processors…
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©2010 SoftwareOnZ PDS member ASCGENxx
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©2010 SoftwareOnZ LPAR behavior analysis
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©2010 SoftwareOnZ PDS member ASCLPAxx
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©2010 SoftwareOnZ LPAR behavior analysis
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©2010 SoftwareOnZ HMC Settings
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©2010 SoftwareOnZ
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Sending Alarms(ASCALTxx) There are 4 types of action: WTO sends a message to the SYSLOG and the console when the condition is fulfilled. WRL suppresses the alert if the condition is no longer fulfilled. EMLsends an Email when the condition is fulfilled. ERLsends an Email when the condition is no longer fulfilled. Simple actions WTO Warning DEFCAP>150 FOR LPAR &CPC..&LPAR Complex rules STARTRULE LPAR IF CPC='SEDICPCA' & LPAR='CP10' IF DC>150 & R4h<DC WTO Warning DEFCAP>150 (&DC.) FOR LPAR &CPC..&LPAR. ENDRULE
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©2010 SoftwareOnZ ASC – Product Flow Data Collection RMF or CMF - LPARs (DC, IMSU, R4H, WLM Capping, …) - CPCs (capacity, CPs,..) Data Collection RMF or CMF - LPARs (DC, IMSU, R4H, WLM Capping, …) - CPCs (capacity, CPs,..) LPAR settings (via HMC API) LPAR’s behavior analysis Make decisions to modify DCs LPAR’s behavior analysis Make decisions to modify DCs Web reporting (update HTML files) Writing SMF records ZCASCW ASC Web SERVER ZCASCW ASC Web SERVER ASC Parameters Period Definitions ASC Commands ASC Parameters Period Definitions ASC Commands Sending alarms (WTO, emails) ZCASC Main ASC Started Task Operator
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©2010 SoftwareOnZ What about OOCoD ! Works just the way you want it to When new CPs are added to CEC ASC automatically responds by adjusting to the new resources How ASC responds is up to you. Set MSUMAX to the new MSU rating? Set MSUMAX to 50% of the new MSU Rating? Change LPAR-B to PRIORITY = 10 ? Set REACTIVITY = 10? Set SECURITYMARGIN = 20?
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©2010 SoftwareOnZ Putting ASC into action You provide us with: – Mutual NDA – On-site technical discussion of AutoSoftCapping – SMF records 70 over a significant period – The SCRT of the last month for each CPC We process the data through our simulator. We schedule a meeting to present: – Review the results of the simulations – Review the Financials, Costs and ROI – Schedule a POC – Run in Simulation mode and validate results – Turn it on
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© 2013 Softwareonz ASC SAVES MONEY by controlling the z/OS license charge. Very short ROI: All our current customers got an ROI between 3 and 12 months! An average of saved MSU between 7 and 15%. ASC opens new opportunities in how you run your operations ASC is a simple tool: Easy to set up on the machine. Compatible with all existing System z servers. A sophisticated Web Reporting interface allows more control of the system. ASC receives excellent customer feedback. zCost ASC – In Summary….
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©2010 SoftwareOnZ Q&A
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© 2013 Softwareonz Contact Info Softwareonz www.softwareonz.com Today’s Presenter: Brian Hoare Your US Sales Contact Brian Hoare Brian.Hoare@softwareonz.com
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©2010 SoftwareOnZ ASC Setting ASC performs dynamic Settings: – Sends DC modification orders to the HMC, and the DCs are set according to the algorithm decisions. ASC performs period Settings: – Period Settings allow ASC to modify some settings at predefined date/time. It can: Modify the DC by setting a predefined value to the parameter DEFCAP ASC Reset Profile: set the DEFCAP and WEIGHT parameters of all LPARs to the initial value (contained in DFCBASE and WBASE) Modify parameters by taking into account predefined parameters values or by reloading predefined parameters members.
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©2010 SoftwareOnZ Group Capacity Limit Group Capacity Limit is an extension of Defined Capacity It’s setup for a group not individual LPARs It allows an installation to define a “softcap” for multiple logical partitions on the same CPC The group limit is a defined capacity for all partitions defined in the group A “CPCMAX” for group of LPARs to share Created on the HMC Can help reduce “softcapping” Creates it’s own problems
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©2010 SoftwareOnZ Group Capacity Limit
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©2010 SoftwareOnZ Warning… MVS Planning: Workload Management SA22-7602-14
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©2010 SoftwareOnZ Conclusion
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©2010 SoftwareOnZ Group Capacity Limit Group Capacity Limit (GCL) introduced in 2008 ShareW% This is the %SHARE calculated from the WEIGHT of the LPAR ShareW_GCL% This is the %SHARE calculated from the WEIGHT in the GCL of the LPAR ShareD% %HARE calculated from the DEFINDED CAPACITY of the LPAR Target MSU from Weight: ShareW% translated in MSU Target MSU from GCL Weight: ShareWGCL% translated in MSU
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