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Ivan Gelb, GIS Corp.

Z10 News and Views

Friday, November 14, 2008


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Session Abstract

Should businesses considering computer systems acquisitions in general be excited about the IBM z10 announcements? Should performance analysts and capacity planners in particular be more or less excited? These will be the two key questions answered by the presented independent analysis of IBM's announcements. You will get ALL your related questions answered..


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TRADEMARKS

The following are trade or service marks of the IBM Corporation: z9, z10, CICS, CICS TS , CICSPlex, DB2, IBM, MVS, OS/390, z/OS, Sysplex, Parallel Sysplex. Any omissions are purely unintended.

© 2008 Gelb Information Systems Corp.URL: www.gelbis.comPhone: 732-303-1333No part of this material can be reproduced by any means without prior written permission from the author and with proper attribution displayed.


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MOTHER OF ALL DISCLAIMERS (MOAD )

All of the information in this document is tried and true. However, this fact alone cannot guarantee that you can get the same results at your place and with your skills. In fact, some of this advice can be hurtful if it is misused and misunderstood. As with all kinds of analysis, anything you may hear or read can be understood and misunderstood in many ways that may seem contradictory to you. Gelb Information Systems Corporation, Ivan Gelb and any one found anywhere assume no responsibility for this information’s accuracy, completeness or suitability for any purpose. Anyone attempting to adapt these techniques to their own environments anywhere do so completely at their

own risk.


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Agenda

The z10 News Highlights

zSeries Planning Gotchas

Why Buy One ASAP or Wait?

Note: Your questions are welcome at any time.


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The z10 News Highlights - 1

Announced February 26, 2008 z10 EC (Enterprise Class) – 2097 1 – 64 processors (CPs) 90 models in four series Model 400s, 500s and 600s are 1 – 12 CPs Model 700s are 1 – 64 CPs 217 – 33,000+ MIPS range Capacity on Demand Shaken & Stirred!


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The z10 News Highlights - 2 Processor Unit (PU) types:

CP / IFL / ICF / zAAP / zIIP

Model Min. Max. Increments E12 1/1/1/0/0 12/12/12/6/6 1/1/1/1/1

E26 1/1/1/0/0 26/26/16/13/13 1/1/1/1/1

E40 1/1/1/0/0 40/40/16/20/20 1/1/1/1/1

E56 1/1/1/0/0 56/56/16/28/28 1/1/1/1/1

E64 1/1/1/0/0 64/64/16/32/32 1/1/1/1/1

Source: IBM’s Specifications


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The z10 News Highlights - 3

Pricing per MIPS of zSeries around February 2008: z10 EC (Enterprise Class) – 2097; Announced February 26, 2008;

90 models in 4 speed ranges; 1 – 64 CPs; 217 - 27,048 MIPSEstimated Market Average: < $2,738 - $2,898

z9 BC (Business Class) – 2096; 84 models; 1 – 4 CPs; 24 – 1,776 MIPSNew Market Average: < $2,498Used Market Average: < $998

z9 EC – 2094; 78 models; 1 – 54 CPs; 199 – 18,024 MIPSNew Market Average: < $2,498Used Market Average: < $998

z890 - 2086New Market Average: < $1,998Used Market Average: < $498

z990 - 2084New Market Average: < $1,998Used Market Average: < $498


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Z10 Uni-CP Models

Source: Cheryl Watson's z/OS CPU Chart - March 2008

z10 Model AVG MIPS

Avg MIPS/CP

LoIO MIPS/

CP

CB-L MIPS

WASDB MIPS

OLTP-W MIPS

2097-401 217 216.7 216.7 222.7 216.7 216.72097-501 470 469.6 469.6 481.6 463.5 463.52097-601 638 638.1 638.1 650.2 632.1 626.12097-701 921 921.1 921.1 939.1 909.0 903.0


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Z10 Sample 7-Series Models

Source: Cheryl Watson's z/OS CPU Chart - March 2008

z10 Model # of CPs

AVG MIPS

Min MIPS

Max MIPS

AVG MIPS/CP

Min MIPS/CP

Max MIPS/CP

2097-701 1 921 903 951 921 903 9512097-708 8 5,900 5,117 6,760 737 640 8452097-716 16 10,318 8,536 12,576 645 534 7862097-724 24 14,261 11,522 17,922 594 480 7472097-732 32 17,934 14,279 22,960 560 446 7182097-740 40 21,419 16,886 27,836 535 422 6962097-748 48 24,712 19,372 32,580 515 404 6792097-754 54 27,048 21,172 36,066 501 392 668


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z10 Planning “Gotchas”

Gotchas remain the same for capacity planners1. Total MIPS / footprint versus Effective MIPS for a

customer workloads remain the Capacity Planner’s biggest challenge and opportunity to shine.

2. Effective Internal Throughput Rate (ITR) for your workloads will differ from most examples

3. Difficult to know which examples are most like yours4. Effective MIPS/CP range is greatest in zSeries

history; about 500 minimum to 900 MIPS maximum!5. One versus multi-footprint decision factors remain the

same and a significant opportunity for cost savings6. IO Subsystems issues remain the same


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Capacity on Demand

New- Capacity for Planned Events (CPE)

Capacity Upgrades on Demand – CUoD

On / Off Capacity on Demand (CoD)

Backup Upgrades (CBU)

vWLC – Variable Workload license issues remain the same!


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HiperDispatch = YES / NO Why? Increase throughput by creation of links between

logical unit of work and the physical processors Logical processors are classified:

Vertical High – dedicated to physical processor Vertical Medium – get remainders of shares distributed to them Vertical Low - only serviced when other partitions do not use

their entire share PR/SM

Ties high priority logicals to physicals Distributes shares to medium and low priority logicals

z/OS ties tasks to subsets of logical processors (LP) Dispatches work to high priority subsets of LPs Parks low priority processors that are not needed


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RMF Processor Activity Report

Two new columns are added to the report: Parked % - Percent of the time the LP was in a parked state Logical Processor Share % - Percent of a physical processor

share that PR/SM will give to this LP if it can use itHigh Priority LPs have 100%Medium Priority LPs have between 1% and 100%Low Priority (discretionary) LPs have 0%

MVS Busy Time re-definition:

MVS BUSY TIME % = (Online Time - (Wait Time + Parked Time)) / (Online Time - Parked Time) * 100

See RMF APAR OA24074 for additional details


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Effective Planning Steps

List ordered from least to most time and cost consuming activities, and highest to lowest risk for error.

1. Obtain and use zPCR published numbers

2. Perform zPCR modeling exercises to establish your performance boundaries and ITRs

3. Perform workload level analytical modeling of your workloads.

4. Measure ITRs of your workloads via benchmarks


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Why Buy a z10 ASAP or Wait?

Buy a z10 ASAP if: Require added capacity per mainframe footprint Bleeding edge shop Cost justifiable benefits from the higher speeds

Wait or consider z9 or even older if: Older zSeries provide all the functionality required

by the business Total cost of ownership (TCO) of older models vs.

z10 is more than X%, $Y lower (X% and $Y value is very site dependent)


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Need to Know More Start at: http://www-03.ibm.com/systems/z/

and http://www-304.ibm.com/jct03004c/systems/z/hardware/z10ec/

Large Systems Performance Reference:http://www-304.ibm.com/jct03004c/servers/eserver/zseries/lspr/

zPCR z9 Reference: http://www-1.ibm.com/support/docview.wss?uid=tss1flash10399

Computer Measurement Group (CMG):www.cmg.org

SHARE: www.share.org


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Time for…


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zSeries Family

IBM System z9 Enterprise Class (EC) 2094 – July 2005 Five models up to 54-way

IBM System z9 Business Class (BC) 2096 – April 2006 Two models up to 4-way

IBM System z10 EC 2097 – February 2008 Five models up to 64-way

IBM System z10 BC 209x – September 2008 One model up to 5-way Over 120 Capacity levels A0x – Z0x (x = 1 – 5 CPUs)


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zSeries Specialty Processors

Integrated Facility for Linux (IFL)

Internal Coupling Facility (ICF)

System z10 Application Assist Processor (zAAP)

System z10 Integrated Information Processor (zIIP)


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z/OS v1.10

September 26, 2008: z/OS V1.10 general availability via ServerPac, CBPDO and SystemPac.

November 21, 2008: General availability of Cryptographic Support for z/OS V1R8-R10 & z/OS.e V1R8 Web deliverable. This Web deliverable will support z/OS V1.8 through z/OS V1.10 and z/OS.e V1.8.

September 30, 2009: End of service for z/OS V1.8 (5694-A01) and z/OS.e V1.8 (5655-G52).

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