Are You Ready For z Systems Workload Pricing for Cloud (zWPC) for z/OS?

Recently IBM announced the z Systems Workload Pricing for Cloud (zWPC) for z/OS pricing mechanism, which can minimize the impact of new Public Cloud workload transactions on Sub-Capacity license charges.  Such benefits will be delivered where higher Public Cloud workload transaction volumes may cause a spike in machine utilization.  Of course, if this looks familiar and you have that feeling of déjà vu, this is a very similar mechanism to Mobile Workload Pricing (MWP)…

Put simply, zWPC applies to any organization that has implemented Sub-Capacity pricing via the basic AWLC or AEWLC pricing mechanisms, for the usual MLC software suspects, namely z/OS, CICS, DB2, IMS, MQ and WebSphere Application Server (WAS).  An eligible transaction is one classified as Public Cloud originated, connecting to a z/OS hosted transactional service and/or data source via a REST or SOAP web service.  Public Cloud workloads are defined as transactions processed by named Public Cloud applications transactions identified as originating from a recognized Public Cloud offering, including but not limited to, Amazon Web Services (AWS), Microsoft Azure, IBM Bluemix, et al.

As per MWP, SCRT calculates the R4HA for Public Cloud transaction GP MSU resource usage, subtracting 60% of those values from the traditional Sub-Capacity software eligible MSU metric, with LPAR granularity, for each and every reporting hour.  The software program values for the same hour are aggregated for all Sub-Capacity eligible LPARs, deriving an adjusted Sub-Capacity value for each reporting hour.  Therefore SCRT determines the billable MSU peak for a given MLC software program on a CPC using the adjusted MSU values.  As per MWP, this will only be of benefit, if the Public Cloud originated transactions generate a spike in the current R4HA.

One of the major challenges for implementing MWP was identifying those transactions eligible for consideration.  Very quickly IBM identified this challenge and offered a WorkLoad Manager (WLM) based solution, to simplify reporting for all concerned.  This WLM SPE (OA47042), introduced a new transaction level attribute in WLM classification, allowing for identification of mobile transactions and associated processor consumption.  These Reporting Attributes were classified as NONE, MOBILE, CATEGORYA and CATEGORYB.  Obviously IBM made allowances for future workload classifications, hence it would seem Public Cloud will supplement Mobile transactions.

In a previous z/OS Workload Manager (WLM): Balancing Cost & Performance blog post, we considered the merits of WLM for optimizing z/OS software costs, while maintaining optimal performance.  One must draw one’s own conclusions, but there seemed to be a strong case for WLM reporting to be included in the z/OS MLC Cost Manager toolkit.  The introduction of zWPC, being analogous to MWP, where reporting can be simplified with supplied and supported WLM function, indicates that intelligent and proactive WLM reporting makes sense.  Certainly for 3rd party Soft-Capping solutions, the ability to identify MWP and zWPC eligible transactions in real-time, proactively implementing MSU optimization activities seems mandatory.

The Workload X-Ray (WLXR) solution from zIT Consulting delivers this WLM reporting function, seamlessly integrating with their zDynaCap and zPrice Manager MSU optimization solutions.  Of course, there is always the possibility to create your own bespoke reports to extract the relevant information from SMF records and subsystem diagnostic data, for input to the SCRT process.  However, such a home-grown process will only work on a monthly reporting basis and not integrate with any Soft-Capping MSU management, which will ultimately control z/OS MLC costs.

In conclusion, from a big picture viewpoint, in the last 2 years or so, IBM have introduced several new Sub-Capacity pricing mechanisms to help System z Mainframe users optimize z/OS MLC costs, namely Mobile Workload Pricing (MWP), Country Multiplex Pricing (CMP) and now z Systems Workload Pricing for Cloud (zWPC).  In theory, at least one of these new pricing mechanisms should deliver benefit to the committed System z user, deploying this server for strategic and Mission Critical workloads.  With the undoubted strategic importance associated with Analytics, Blockchain, Cloud, DevOps, Mobile, Social, et al, the landscape for System z workloads is rapidly evolving and potentially impacting those sacrosanct legacy Mission Critical workloads.  Seemingly the realm of possibility exists that Cloud and Mobile originated transactions will dominate access to System z Mainframe System Of Record (SOR) data repositories, which generates a requirement to optimize associated MLC costs accordingly.  Of course, for some System z users, such Cloud and Mobile access might not be on today’s to-do list, but inevitably it’s on the horizon, and so why not implement the instrumentation ability ASAP!

z/OS Workload Manager (WLM): Balancing Cost & Performance

A sophisticated mechanism is required to orchestrate the allocation of System z resources (E.g. CPU, Memory, I/O) to multiple z/OS workloads, requiring differing business processing priorities. Put very simply, a mechanism is required to translate business processing requirements (I.E. SLA) into an automated and equitable z/OS performance manager. Such a mechanism will safeguard the highest possible throughput, while delivering the best possible system responsiveness. Ideally, such a mechanism will assist in delivering this optimal performance, for the lowest cost; for z/OS, primarily Workload License Charges (WLC) related. Of course, the Workload Management (WLM) z/OS Operating System component delivers this functionality.

A rhetorical question for all z/OS Performance Managers and z/OS MLC Cost Managers would be “how much importance does your organization place on WLM and how proactively do you manage this seemingly pivotal z/OS component”? In essence, this seems like a ridiculous question, yet there is evidence that suggests many organizations, both customer and ISV alike, don’t necessarily consider WLM to be a fundamental or high priority performance management discipline. Let’s consider several reasons why WLM is a fundamental component in balancing cost and performance for each and every z/OS environment:

  • CPU (MSU) Resource Capping: Whatever the capping method (I.E. Absolute, Hard, Soft), WLM is a controlling mechanism, typically in conjunction with PR/SM, determining when capping is initiated, how it is managed and when it is terminated. Therefore from a dispassionate viewpoint, any 3rd party ISV product that performs MSU optimization via soft capping mechanisms should ideally consider the same CPU (E.g. SMF Type 70, 72, 99) instrumentation data as WLM. Some solutions don’t offer this granularity (E.g. AutoSoftCapping, iCap).
  • MLC R4HA Cost Management: WLM is the fundamental mechanism for controlling this #1 System z software TCO component; namely WLM collects 48 consecutive metric CPU MSU resource usage every 5 Minutes, commonly known as the Rolling 4 Hour Average (R4HA). In an ideal world, an optimally managed workload that generates a “valid monthly peak”, will fully utilize this “already paid for” available CPU MSU resource for the remainder of the MLC eligible month (I.E. Start of the 2nd day in a calendar month, to the end of the 1st day in the next calendar month). More recently, Country Multiplex Pricing (CMP) allows an organization to move workloads between System z server (I.E. CPC) structures, without cost consideration for cumulative R4HA peaks. Similarly, Mobile Workload Pricing (MWP) reporting will be simplified with WLM service definitions in z/OS 2.2. Therefore it seems prudent that real-time WLM management, both in terms of real-time reporting and pro-active decision making makes sense.
  • System z Server CPU Management: As System z server CPU chips evolve (E.g. CPU Chip Cache Hierarchy and Relative Nest Intensity), there are complementary changes to the z/OS Operating System management components. For example, HiperDispatch Mode delivers CPU resource usage benefit, considering CPU chip cache resources, intelligently allocating workload to as few logical processors as possible. It therefore follows that prioritization of workloads via WLM policy definitions becomes increasingly important. In this instance one might consider that CPU MF (SMF Type 113) and WLM Topology (SMF Type 99) are complementary reporting techniques for System z server design and management.

Since its announcement in September 1994 (I.E. MVS/ESA Version 5), WLM has evolved to become a fully-rounded and highly capable z/OS System Resources Manager (SRM), simply translating business prioritization policies into dynamic function, optimizing System z CPU, Memory and I/O resources. More recently, WLM continues to simplify the management of CPU chip cache hierarchy resources, while reporting abilities gain in strength, with topology reporting and the promise of simplified MWP reporting. Moreover, WLM resource management becomes more granular and seemingly the realm of possibility exists to “micro manage” System z performance, as and if required. Conversely, WLM provides the opportunity to simplify System z performance management, with intelligent workload differentiation (I.E. Subsystem Enclave, Batch, JES, USS, et al).

Quite simply, IBM are providing the instrumentation and tools for the 21st Century System z Performance and Software Cost Subject Matter Expert (SME) to deliver optimal performance for minimal cost. However, it is incumbent for each and every System z user to optimize software TCO, proactively implementing new processes and leveraging from System z functions accordingly.

Returning to that earlier rhetorical question about the importance of WLM; seemingly its importance is without doubt, primarily because of its instrumentation and management abilities of increasingly cache rich System z CPU chips and its fundamental role in controlling CPU MSU resource, vis-à-vis the R4HA.

Although IBM will provide the System z user with function to optimize system performance and cost, for obvious commercial reasons IBM will not reduce the base cost of System z MLC software. However, recent MLC pricing announcements, namely Country Multiplex Pricing (CMP), Mobile Workload Pricing (MWP) and Collocated Application Pricing (zCAP) provide tangible options to reduce System z MLC TCO. Therefore the System z user might need to consider how they can access real-time WLM performance metrics, intelligently combining this instrumentation data with function to intelligently optimize CPU MSU resource, managing the R4HA accordingly.

Workload X-Ray (WLXR) from zIT Consulting simplifies WLM performance reporting, enabling users to drill down into the root cause of performance variances in a very fast and easy way. WLXR assists in root cause problem determination by zooming in, starting from a high level overview, going right down to detailed Service Class performance information, such as the Performance Index (PI), showing potential bottleneck situations during peak time. Any system overhead considerations are limited, as WLXR delivers meaningful real time information on a “need to know” basis.

A fundamental design objective for WLXR is data reduction, only delivering the important information required for timely and professional workload management. Straight to the point information instead of data overload, sometimes from a plethora of data sources (E.g. SMF, System Monitors, et al). WLXR incorporates the following easy-to-use functions:

  • Simplified Data Collection & Storage: Minimal system overhead TCP/IP based agents periodically (E.g. 5, 15, 60 Minutes) collect CPU (Type 70) and WLM (Type 72) data. Performance data is stored centrally in near real-time, building a historical repository with intelligent analytics for meaningful information presentation.
  • Intelligent GUI Based Information Presentation: Meaningful decision based reports and graphs detailing CPU (E.g. MSU, R4HA, Weight) and WLM (E.g. Service Class, Performance Index, Response Time, Transaction Workflow) resource usage. A drill-down design provides a granularity of data presentation, for Management Summary to 3rd Level Technical Diagnostics use.
  • Corporate Identity Branding: A modular template design, allowing for easy corporate identity branding, with flexibility to easily add additional reports, as and if required.

Without doubt, WLM is a significant z/OS System Resources Management function, simplifying the translation of business workload requirements (I.E. Service Level Agreement) into timely and proactive allocation of major System z hardware resources (I.E. CPU, Memory, I/O). This management of System z resources has been forever thus for 20+ years, while WLM has always offered “software cost control” functionality, working with the various and evolving CPU capping techniques. What might not be so obvious, is that there is a WLM orientated price versus performance correlation, which has become more evident in the last 5 years or so. Whether Absolute Capping, HiperDispatch, Mobile Workload Pricing, Country Multiplex Pricing or evolving Soft Capping techniques, the need for System z users to integrate z/OS MLC pricing considerations alongside WLM performance based management is evident.

Historically there was not a clear and identified need for a z/OS Performance/Capacity Manager to consider MLC costs in their System z server designs. However, there is a clear and present danger that this historic modus operandi continues and there will only be one financial winner, namely IBM, with unnecessarily high MLC charges. Each and every System z user, whether large or small, can safeguard the longevity of their IBM Mainframe platform by recognizing and deploying proactive and current System z MLC cost management processes.

All too often it seems that capping can be envisaged as punitive, degrading system performance to reduce System z MLC costs. Such a notion needs to be consigned to history, with a focussed perspective on MSU optimization, where the valuable and granular MSU resource is allocated to the workload that requires such CPU resource, with near real-time performance profiling. If we perceive MSU optimization to be R4HA based and that IBM are increasing WLM function to assist this objective, CPU capping can be a benefit that does not adversely impact performance. As previously stated, once a valid R4HA peak has occurred, that high MSU watermark is available for the remainder of the MLC billing period. Similarly at a more granular level, once a workload has peaked and its MSU usage declines, the available MSU can be redirected to other workloads. With the introduction of Country Multiplex Pricing, System z users no longer need to concern themselves about creating a higher R4HA peak, when moving workloads between System z servers.

Quite simply, from the two most important perspectives, performance and cost optimization, WLM provides the majority of functionality to assist System z users get the best performance for the lowest cost. Analytics based products like Workload X-Ray (WLXR) assist this endeavour, analysing WLM data in near real-time from a performance and MLC cost perspective. It therefore follows that if this important information is also available for sophisticated MSU optimization solutions, which consider WLM performance (E.g. zDynaCap, zPrice Manager), then proactive performance and cost management follows. It’s hard to envisage how a fully-rounded MSU optimization decision can be implemented in near real-time, from an MSU optimization solution that does not consider WLM performance metrics…

How to Connect Mobile Workloads to System z

Despite potential security concerns, primarily data encryption and multiple-factor authentication related, mobile transactions continue to increase their share of the market, accounting for up to half of online transactions. Mobile payments now account for 30%+ of all global online transactions as of Q3 2015, continuing the upward trend experienced for the last several years. Although there are global differences in mobile transaction adoption, all global locations are experiencing rapid growth in mobile transaction adoption. Furthermore, as a general rule of thumb, seemingly ~66% of mobile transactions originate from a smartphone, a ~2:1 ratio when compared with tablet devices. Therefore it seems highly probable that smartphone originated mobile transactions will become the de facto standard for online transactions…

For System z users, the majority of their TCO continues to be IBM MLC software related and seemingly the realm of possibility exists for retail operations to reduce IBM MLC TCO as a result of modernizing their business for this mobile transaction phenomenon. Recognizing the security, scalability and transaction ability of the System z platform, why wouldn’t it be the ideal platform for mobile transactions? Furthermore, deploying mobile workloads that can take advantage of modern low cost System z pricing metrics, namely System z Collocated Application Pricing (zCAP) and Mobile Workload Pricing (MWP) for z/OS, could substantially reduce IBM MLC TCO. In theory, existing legacy applications might become somewhat static in nature, as mobile transactions replace existing traditional transaction mechanisms. Therefore the cost per business transaction reduces, potentially significantly.

So, just how easy is it to connect mobile transactions to the System z platform?

z/OS Connect is a software function engineered to leverage from the Liberty Profile for z/OS, acting as an enabler of connectivity between the mobile environment (client) and the System z platform (host). Put another way, z/OS Connect exposes System z assets for mobile and cloud workloads. Quite simply z/OS Connect delivers JSON (JavaScript Object Notation) and REST (REpresentational State Transfer) functionality to leverage from existing z/OS subsystems (E.g. CICS, IMS, Batch, et al). These traditional System z transaction systems (E.g. CICS, IMS) often integrated with DB2, are repositories for vast amounts of business transactions and data. There is no incremental cost for z/OS Connect usage, being packaged with WebSphere Application Server (WAS), CICS and IMS software products.

z/OS Connect provides a discovery function allowing developers to query services that have been configured for a z/OS Connect instance. A single z/OS Connect REST call returns a list of all configured services and another REST call will return the details of a given service. Importantly, developers only need to know the REST API service and associated JSON requirements to achieve this mobile device to System z interoperability; they do not need to know the underlying CICS or IMS subsystem. z/OS Connect incorporates a data conversion function that maps JSON to the host (I.E. CICS or IMS) data format requirement. Put really simply, when a request is received, z/OS Connect converts the data for CICS or IMS subsystem processing and when a response is produced, z/OS Connect converts the data back to JSON.

From a security viewpoint, standard or bespoke code can be used for control before and after a request is processed, identified as an interceptor. For Security, the calling user identity can be checked against defined roles, determining if they have authority to use z/OS Connect or the configured service. On z/OS the security interface is SAF, supplemented by an External Security Manager (ESM), namely ACF2, RACF or TopSecret. For Audit, request information can be logged via SMF for later analysis. Information about each request is logged, including timestamp, bytes processed, response time and USERID.

To summarize, z/OS Connect is designed to simplify the integration of mobile systems and z/OS assets. Delivering a consistent front-end interface for mobile systems via REST and JSON, z/OS Connect seamlessly integrates with WAS, CICS and IMS subsystems for data processing. In theory, a developer could code a mobile workload application, with no knowledge of the System z platform.

In conclusion, it seems we have to accept the adoption of the smartphone device for processing an ever increasing amount of online transactions. The realm of possibility exists that online transactions (click) will continue to displace traditional and legacy (brick) transactions. Therefore as businesses evolve to accommodate mobile transactions, they should strive to reduce their IBM MLC TCO accordingly, delivering JSON and REST applications that can leverage from optimal cost z/OS MLC software, primarily via the zCAP and MWP pricing mechanisms. z/OS Connect is one such option that simplifies the timely delivery of mobile workload applications.

z13 WLC Software Pricing Updates: Are You Ready?

Along with the z13 hardware announcement were several very obvious WLC pricing announcements, but more importantly, two hidden Statements Of Direction (SOD) or pre-announcements.

I guess we can all remember the “zSeries Technology Dividend” where put simply, when upgrading zSeries servers, users would benefit from a ~10%+ software price versus performance benefit.  Does anybody still remember the IBM Mainframe Charter from 2003?  That was the document that first referenced this price/performance benefit, which became known as the “technology dividend”.  Specifically, this document stated:

IBM lowered MSU values incorporated in the z990 microcode by approximately 10 percent, resulting in IBM software savings for IBM zSeries software products with MSU-based pricing.  These reduced MSUs do not indicate a change in machine performance. Superior performance and technology within the z990 has allowed IBM to provide improved software prices for key IBM zSeries operating system and middleware software products.

Put really simply, for z990, z9 and z10 server upgrades, IBM delivered this ~10% benefit with faster CPU chips.  Therefore, no noticeable impact on Software Pricing, Capacity Planning or Performance Measurement processes.  However, with the z196/z114, this ~10% benefit could no longer be delivered by CPU chip hardware speed enhancements.  To compensate, IBM introduced the Advanced Workload License Charges (AWLC) pricing regime.  AWLC is an evolution of the Variable (VWLC) pricing regime, lowering per MSU costs for WLC eligible products (E.g. z/OS, CICS, DB2, IMS, WebSphere/MQ, et al).  Hence delivering the ~10% price/performance benefit when upgrading from a z10 to a z196 or z114 (AEWLC) server.

Of course, when upgrading to the zEC12 or zBC12, further refinement of AWLC pricing was required, to deliver this the ~10% price/performance benefit.  Hence, IBM introduced the AWLC Technology Transition Offerings (TTO), lowering AWLC prices for zXC12 and now z13 zSeries servers.

For z13, IBM announced the following z13 AWLC Technology Transition Offerings:

  • Technology Update Pricing for the IBM z13 (TU3): When stand-alone z13 servers are priced with AWLC, or when all the servers in an aggregated Sysplex or Complex are z13 servers priced with AWLC, these servers receive a reduction to AWLC pricing which is called.  Quantity of z13 Full Capacity MSUs for a stand-alone server, or the sum of Full Capacity MSUs in an actively coupled Parallel Sysplex or Loosely Coupled Complex made up entirely of z13 servers.  AWLC discounts range from 4% (4-45 MSU) to 14% (5477+ MSU).
  • AWLC Sysplex Transition Charges (TC2): When two or more machines exist in an aggregated Sysplex or Complex & at z13, zEC12, or zBC12 server & at least one is a z196 or z114 server, with no older technology machines included, they will receive a reduction to AWLC pricing across the aggregated Sysplex or Complex. This reduction provides a portion of the benefit related to the Technology Update Pricing for AWLC (TU1) based upon the proportion of zEC12 or zBC12 server capacity in the Sysplex or Complex.  AWLC discounts range from 0.5% (0-20% z13/zXC12 MSU) to 4.5% (81%-<100% z13/zXC12 MSU).
  • AWLC Sysplex Transition Charges (TC3): When two or more machines exist in an aggregated Sysplex or Complex & at least one is a z13 server & at least one is a zEC12 or zBC12 server, with no older technology machines included, they will receive a reduction to AWLC pricing across the aggregated Sysplex or Complex. This reduction provides a portion of the benefit related to the IBM z13 TU3 offering, based on the total Full Capacity MSU of all z13, zEC12, & zBC12 Machines in the Sysplex or Complex.  AWLC discounts range from 2.8% (4-45 MSU) to 9.8% (5477+ MSU).

These AWLC software pricing announcements are Business As Usual (BAU) and to be expected, but if we dig slightly deeper into the z13 announcements, we will find two other pre-announcements of interest!

Since introducing sub-capacity and WLC pricing regimes, IBM have continually evolved zSeries software sub-capacity pricing mechanisms, with zNALC, AWLC, IWP and more recently MWP offerings.  From a generic viewpoint, with the exception of zNALC, a niche new workload price offering, these pricing announcements did not challenge the “status quo”, where aggregated MSU and large LPAR structures were the ideal.  So why might the upcoming z13 (E.g. Q2 2015) pricing announcements be of note?  Primarily because they challenge the notion of having separate structural entities (I.E. Sysplex Coupled zSeries Servers & LPARS) for existing and new workloads.

Country Multiplex Pricing (CMP): A major evolution, essentially eliminating prior Sysplex pricing rules, requiring that systems be interconnected and/or sharing the same data in order to be eligible for aggregation of MLC software pricing charges.  A Multiplex is defined as the collection of all z Systems within a country.  Therefore, sub-capacity usage will be measured & reported as a single machine, regardless of the connectivity or data sharing configurations.  A new sub-capacity reporting tool is being implemented & clients should expect a transition period as the new pricing model is implemented.  This should allow flexibility to move & run work anywhere, eradicating multiple workload peaks when workloads move between machines.  Ultimately the cost of growth is reduced with one price per product based on MLC capacity growth anywhere in the country.CMP should facilitate for flexible deployment and movement of business workloads between all zSeries Servers located within a country, without impacting MLC billing.  For the avoidance of doubt, this will assist the customer in safeguarding they don’t encounter duplicate MLC peaks as a result of moving an LPAR workload from one zSeries Server to another.  It also removes all Sysplex aggregation considerations, Single Version Charging (SVC) time limits and Cross Systems Waivers (CSW).  Most notably, the cost per MSU for additional capacity will be optimized, being based upon total Multiplex MSU capacity.

IBM Collocated Application Pricing (ICAP): Previously, new applications (zNALC) required a separate LPAR to avoid increases in other MLC software charges.  ICAP facilitates new eligible applications be charged as if they are running in a dedicated environment.  Technically they are integrated with other (non-eligible) workloads.  Software supporting the new application will not impact the charges for other MLC software collocated in the same LPAR.  ICAP appears as an evolution of the Mobile Workload Pricing (MWP) for z/OS pricing mechanism.  ICAP will use an enhanced MWRT, implemented as a z/OS application.  ICAP applies to z13, zXC12, z196/z114 servers.  IBM anticipates that ICAP will deliver zNALC type price benefit, discounting ~50% of ICAP eligible software MSU.

Seemingly IBM have learned from the lessons of IWP, where at first glance, software discounts were attractive, but not at the cost of a separate LPAR.  From a reporting viewpoint, there are similarities to Mobile Workload Pricing for z/OS (MWP), but most notably, pricing is largely zNALC based.  Therefore collocating new workloads in the same LPAR as existing workloads, but with the best price performance of any pricing regime, except zNALC, which is a niche and special edition software pricing metric.

In conclusion, CMP and ICAP are notable WLC pricing regime updates, because they do challenge the status quo of MSU aggregation via Sysplex coupled servers and the ability to collocate new and existing workloads in the same LPAR.  On the one hand, simplified pricing considerations from a granular per MSU cost viewpoint.  However, to optimize price versus performance, arguably the savvy Data Centre will now require a higher level of workload management, safeguarding optimum MSU capacity usage and associated performance.

zPrice Manager is an evolution of the typical soft-capping approach, which can be IBM function based, namely Defined Capacity (DC) or Group Capacity Limit (GCL), or ISV product based.  ISV products typically allow MSU management with dynamic MSU capacity resource management between LPAR, LPAR Group & CPC structures, ideally with Workload Manager (WLM) interaction.  If plug & play simple MSU management is required, these traditional IBM or 3rd party ISV approaches will still work with CMP and ICAP, but will they maximize WLC TCO?

The simple answer is no, because CMP allows the movement of workloads between zSeries Servers.  Therefore if WLC product (I.E. z/OS, CICS, DB2, IMS, WebSphere/MQ) pricing is to be country wide, and optimum WLM performance is to be maintained, a low level granularity of MSU management is required.

zPrice Manager from zIT Consulting allows this level of WLC software product management, with a High Level REXX programmatic interface, and the ability to store real life MSU profile data as callable REXX variables.  Similar benefits apply to ICAP workloads, where different WLM policies might be required for the same WLC product, deployed on the same collocated workload LPAR.  Therefore the savvy data centre will safeguard they optimize MSU TCO via MWP and/or ICAP pricing regimes, without impacting business application performance.

In conclusion, the typical z13 AWLC software pricing updates are Business As Usual (BAU) and can be implemented, as and when required and without consideration.  Conversely, CMP and ICAP can deliver significant future benefit and should be considered in zSeries Server capacity planning forecasts.

Bottom Line Recommendation: Each and every zSeries Server user, whether large or small, should initiate contact with their IBM account teams, for CMP and ICAP briefings, allowing them to consider how they might benefit from these new WLC software pricing regimes.

Are You Ready For z/OS Mobile Workload Pricing (MWP)?

Recently IBM announced Mobile Workload Pricing (MWP) for z/OS which can minimize the impact of mobile workloads on Sub-Capacity license charges, delivering optimized pricing for System z environments extending their workloads to incorporate mobile devices.

MWP only applies to Mainframe customers deploying a zEC12 or zBC12 in their enterprise, as per the AWLC or AEWLC (AKA Advanced/Entry Workload License Charges) metric; MWP is also extended if a zEC12 or zBC12 enterprise is deploying a z196 or z114 via the AWLC or AEWLC metric.

The primary consideration for MWP is determining how a Mainframe customer can comply with the tracking requirements for mobile workloads.  On the plus side, MWP does not require an isolation of mobile workload transactions in separate LPARs, using enhanced reporting for software pricing.  This is a major step forward when compared with Integrated Workload Pricing (IWP), which ideally requires large LPAR container structures, minimizing costs for WebSphere workloads, applying to the CICS, IMS and WebSphere MLC software products.  Conversely, MWP includes DB2 in the list of eligible software products for cost reduction.

If a Mainframe customer is eligible for MWP pricing they will then need to utilize the Mobile Workload Reporting Tool (MWRT), which is analogous to the original Sub-Capacity Reporting Tool (SCRT).  This is an either/or situation, the Mainframe customer only submits MCRT reports to IBM if they’re MWP eligible, or the status quo remains, where non-MWP Mainframe customers continue to submit SCRT reports.

The Mainframe customer must track and report General Purpose (GP) CPU time for mobile transactions, reporting those values in a pre-defined format to IBM each month to benefit from MWP.  MWRT utilizes reported mobile transaction data to adjust the Rolling 4 Hour Average (R4HA) Sub-Capacity software eligible MSUs, with LPAR granularity.  Optimizing mobile transactions impact for peak LPAR MSU values delivers benefit when higher mobile transaction volumes generate MSU resource usage peaks (Workload Spikes).

MWRT calculates the R4HA for mobile transaction GP MSU resource usage, subtracting 60% of those values from the traditional Sub-Capacity software eligible MSU metric, with LPAR granularity, for each and every reporting hour.  The software program values for the same hour are aggregated for all Sub-Capacity eligible LPARs, deriving an adjusted Sub-Capacity value for each reporting hour.  Therefore MWRT determines the billable MSU peak for a given MLC software program on a CPC using the adjusted MSU values.

Most committed zSeries Mainframe customers will be deploying CICS, DB2 and WebSphere software, while IT trends dictate that mobile device usage (I.E. Smartphone, Tablet, et al) is increasing.  Therefore most z/OS applications that require such mobile access have evolved accordingly over time.  Therefore it seems to be one of those “No Brainer” type scenarios, where the Mainframe user should plan to benefit from MWP, either as they upgrade to the latest zSeries technology, namely zEC12 or zBC12, or immediately if already deploying a zEC12 or zBC12 server.

The only minor consideration is a requirement for the zEC12 or zBC12 customer to engage their local IBM account team, to determine what data they need to report on mobile transactions for MWP consideration.  This one off task will deliver optimized WLC pricing forever more.

Of course IBM are encouraging customers to consider the Mainframe for new applications, driven by mobile transaction requirements.  Equally, there is no reason why longer term Mainframe customers can’t benefit from MWP, benefitting from reduced MLC costs, a major consideration of Mainframe TCO.