©2010 SoftwareOnZ AutoSoftCapping (ASC) vWLC Manage your software Bill without the Performance...

©2010 SoftwareOnZ©2010 SoftwareOnZ

AutoSoftCapping (ASC) vWLC

Manage your software Billwithout the Performance Problems !

©2010 SoftwareOnZ

AGENDA

• SoftCapping Strategies• AutoSoftCapping(ASC)

• General Principles• How it works• OOCoD• Putting ASC into Action

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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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) !

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: + / -

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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?

©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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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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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

CPCMINSUM ( LPAR’s DCs)

Minimum White Space

White Space

CPC

CPC Free Space

Time

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General Principle

Setting the Defined Capacity line Enforce AutoSoftCapping Defined Capacity parameters

CPC: CPCMAX, CPCMINLPAR: MSUMAX, MSUMINPERIOD statements

If IMSU < R4HDecrease DC to just above the R4H to optimize the SCRT and avoid capping, releasing DC MSUs to the pool.

If IMSU > R4HIncrease DC to just above the R4H to avoid capping, taking from the pool or enforce capping as you have defined

©2010 SoftwareOnZ

ASC – Product Flow

Data Collection RMF or CMF

- LPARs (DC, IMSU, R4H, WLM Capping, …)

- CPCs (capacity, CPs, ..)




LPAR settings (via HMC API)LPAR settings (via HMC API)

LPAR’s behavior analysis

Make decisions to modify DCs



Web reporting (update HTML files)Web reporting (update HTML files)

Writing SMF records Writing SMF records

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) Sending alarms (WTO, emails)

ZCASC Main ASC Started Task

OperatorOperator

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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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PDS member ASCGENxx

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PDS member ASCLPAxx

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HMC Settings

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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. EML sends an Email when the condition is fulfilled.ERL sends 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

©2010 SoftwareOnZ

ASC – Product Flow







LPAR settings (via HMC API)LPAR settings (via HMC API)





Web reporting (update HTML files)Web reporting (update HTML files)

Writing SMF records Writing SMF records



ASC Parameters

Period Definitions

ASC Commands

ASC Parameters

Period Definitions

ASC Commands

Sending alarms (WTO, emails) Sending alarms (WTO, emails)

ZCASC Main ASC Started Task

OperatorOperator

©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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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

•© 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….


Q&A

•© 2013 Softwareonz

Contact Info• Softwareonz

• www.softwareonz.com

• Today’s Presenter: Brian Hoare

• Your US Sales Contact•Brian Hoare•[email protected]

mailto:[email protected]

©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.

©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


Conclusion

©2010 SoftwareOnZ


•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

©2010 SoftwareOnZ AutoSoftCapping (ASC) vWLC Manage your software Bill without the Performance...

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